{"id":40079,"date":"2021-08-27T09:00:40","date_gmt":"2021-08-27T13:00:40","guid":{"rendered":"https:\/\/www.singlecare.com\/blog\/?p=40079"},"modified":"2024-05-21T13:04:14","modified_gmt":"2024-05-21T17:04:14","slug":"viagra-side-effects","status":"publish","type":"post","link":"https:\/\/www.singlecare.com\/blog\/viagra-side-effects\/","title":{"rendered":"Viagra side effects and how to avoid them"},"content":{"rendered":"<p><a href=\"#common-side-effects\">Viagra side effects<\/a> | <a href=\"#serious-side-effects\">Serious side effects<\/a> | <a href=\"#blood-pressure\">Blood pressure<\/a> | <a href=\"#vision-loss\">Vision loss<\/a> | <a href=\"#how-long-do-side-effects-last\">How long do side effects last?<\/a> | <a href=\"#warnings\">Warnings<\/a> | <a href=\"#interactions\">Interactions<\/a> | <a href=\"#how-to-avoid-side-effects\">How to avoid side effects<\/a><\/p>\n<p><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> is a <\/span><span style=\"font-weight: 400;\">brand-name<\/span><span style=\"font-weight: 400;\"> prescription drug approved for the <\/span><span style=\"font-weight: 400;\">treatment of <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/erectile-dysfunction-guide-symptoms-causes\/\"><span style=\"font-weight: 400;\">erectile dysfunction<\/span><\/a><span style=\"font-weight: 400;\">. <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/sildenafil-citrate\"><span style=\"font-weight: 400;\">Sildenafil citrate<\/span><\/a><span style=\"font-weight: 400;\">, the active ingredient in <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">, belongs to a class of drugs called <\/span><span style=\"font-weight: 400;\">phosphodiesterase type 5<\/span> <span style=\"font-weight: 400;\">inhibitors<\/span><span style=\"font-weight: 400;\">, or <\/span><span style=\"font-weight: 400;\">PDE5 inhibitors<\/span><span style=\"font-weight: 400;\">, for short. <\/span><span style=\"font-weight: 400;\">Viagra works<\/span><span style=\"font-weight: 400;\"> by widening <\/span><span style=\"font-weight: 400;\">blood vessels<\/span><span style=\"font-weight: 400;\"> in the penis, increasing and prolonging <\/span><span style=\"font-weight: 400;\">blood flow<\/span><span style=\"font-weight: 400;\"> into the <\/span><span style=\"font-weight: 400;\">penile<\/span><span style=\"font-weight: 400;\"> erectile tissues. <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">, however, can cause problems in some men, such as <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\"> or <\/span><span style=\"font-weight: 400;\">drug interactions<\/span><span style=\"font-weight: 400;\">. <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> can also worsen pre-existing conditions. There are ways, however, to minimize some of these risks.<\/span><\/p>\n<p><span data-sheets-root=\"1\" data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:6849,&quot;3&quot;:{&quot;1&quot;:0},&quot;9&quot;:1,&quot;10&quot;:2,&quot;12&quot;:0,&quot;14&quot;:{&quot;1&quot;:2,&quot;2&quot;:0},&quot;15&quot;:&quot;Arial&quot;}\" data-sheets-formula=\"=CONCATENATE(R[0]C[-2],R[0]C[-3],R[0]C[-1])\"><\/span><\/p>\n<p><b>RELATED: <\/b><a href=\"https:\/\/www.singlecare.com\/prescription\/viagra\/what-is\"><b>Learn more about <\/b><b>Viagra<\/b><\/a><\/p>\n<h2 id=\"common-side-effects\">Common side effects of Viagra<\/h2>\n<p><span style=\"font-weight: 400;\">The most <\/span><span style=\"font-weight: 400;\">common <\/span><a href=\"https:\/\/online.epocrates.com\/drugs\/138805\/Viagra\/Adverse-Reactions\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">side effects<\/span><\/a><span style=\"font-weight: 400;\"> of Viagra<\/span><span style=\"font-weight: 400;\"> are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Headache<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Diarrhea<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nausea<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stomach upset<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nosebleed<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rhinitis<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nasal congestion<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Flushing<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Skin redness<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Blurred vision<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Skin rash<\/span><\/li>\n<\/ul>\n<h2 id=\"serious-side-effects\">Serious side effects of Viagra<\/h2>\n<p><span style=\"font-weight: 400;\">The most <\/span><span style=\"font-weight: 400;\">serious side effects of Viagra<\/span><span style=\"font-weight: 400;\"> include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cardiovascular<\/span><span style=\"font-weight: 400;\"> events such as:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Chest pain<\/span><span style=\"font-weight: 400;\"> (<\/span><span style=\"font-weight: 400;\">angina<\/span><span style=\"font-weight: 400;\">)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Heart attack<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Irregular heartbeats<\/span><span style=\"font-weight: 400;\"> (arrhythmias)<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Severe bleeding (hemorrhage) in the brain, lungs, or eye<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vision loss<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hearing loss<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Painful or <\/span><span style=\"font-weight: 400;\">prolonged erections<\/span><span style=\"font-weight: 400;\"> (<\/span><span style=\"font-weight: 400;\">priapism<\/span><span style=\"font-weight: 400;\">)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Seizures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Low blood pressure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Low blood cell counts<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Severe <\/span><span style=\"font-weight: 400;\">allergic reactions<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sudden death<\/span><\/li>\n<\/ul>\n<h3 id=\"blood-pressure\">Viagra and blood pressure<\/h3>\n<p><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> and similar drugs were originally invented to lower blood pressure in people with <\/span><span style=\"font-weight: 400;\">pulmonary arterial hypertension<\/span><span style=\"font-weight: 400;\">, or <\/span><span style=\"font-weight: 400;\">high blood pressure<\/span><span style=\"font-weight: 400;\"> in the lung\u2019s arteries. In fact, <\/span><span style=\"font-weight: 400;\">Pfizer<\/span><span style=\"font-weight: 400;\">, the manufacturer of <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">, also markets another <\/span><span style=\"font-weight: 400;\">sildenafil<\/span><span style=\"font-weight: 400;\"> drug called <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/revatio\"><span style=\"font-weight: 400;\">Revatio<\/span><\/a><span style=\"font-weight: 400;\"> that is only used to treat pulmonary hypertension. Because <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> lowers blood pressure, it can cause problems if blood pressure falls too far. At its mildest, <\/span><span style=\"font-weight: 400;\">low blood pressure<\/span><span style=\"font-weight: 400;\"> can cause many of the <\/span><span style=\"font-weight: 400;\">common side effects of Viagra<\/span><span style=\"font-weight: 400;\"> such as fainting, dizziness, lightheadedness when standing, accidental falls, or accidental injuries. Clinically significant <\/span><span style=\"font-weight: 400;\">low blood pressure<\/span><span style=\"font-weight: 400;\">, however, has only been reported when people have taken <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> along with other blood pressure medications, particularly <\/span><span style=\"font-weight: 400;\">alpha blockers<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3 id=\"vision-loss\">Viagra and vision loss<\/h3>\n<p><span style=\"font-weight: 400;\">Vision loss has been reported in people taking drugs like <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> and <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/cialis\"><span style=\"font-weight: 400;\">Cialis<\/span><\/a><span style=\"font-weight: 400;\">. Nearly all cases were due to <\/span><span style=\"font-weight: 400;\">non-arteritic anterior ischemic optic neuropathy<\/span><span style=\"font-weight: 400;\"> or <\/span><span style=\"font-weight: 400;\">NAION<\/span><span style=\"font-weight: 400;\">, a <\/span><span style=\"font-weight: 400;\">medical condition<\/span><span style=\"font-weight: 400;\"> in which the flow of blood to the optic nerve is stopped. <\/span><span style=\"font-weight: 400;\">NAION<\/span><span style=\"font-weight: 400;\"> can quickly cause a <\/span><span style=\"font-weight: 400;\">sudden decrease<\/span><span style=\"font-weight: 400;\"> or complete <\/span><span style=\"font-weight: 400;\">loss of vision<\/span><span style=\"font-weight: 400;\"> in one or both eyes. Fortunately, <\/span><span style=\"font-weight: 400;\">NAION<\/span><span style=\"font-weight: 400;\"> is only rarely reported. Unfortunately, it is so rare that not all doctors will screen for this issue. Make sure you share any personal or family history of vision changes with your doctor. People taking <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> are urged to get immediate medical help if they experience vision changes.<\/span><\/p>\n<h2 id=\"how-long-do-side-effects-last\">How long do side effects last?<\/h2>\n<p><span style=\"font-weight: 400;\">Most of <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">\u2019s commonly experienced <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\"> are temporary. <\/span><span style=\"font-weight: 400;\">Sildenafil<\/span><span style=\"font-weight: 400;\"> has a half-life of about <\/span><a href=\"https:\/\/pubchem.ncbi.nlm.nih.gov\/compound\/Sildenafil#section=Biological-Half-Life\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">four hours<\/span><\/a><span style=\"font-weight: 400;\">, so headache, nausea, stomach upset, and similar unpleasant <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\"> should go away in about 4-12 hours.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Other <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">, such as painful or <\/span><span style=\"font-weight: 400;\">prolonged erections<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">loss of hearing<\/span><span style=\"font-weight: 400;\">, vision changes, severe <\/span><span style=\"font-weight: 400;\">allergic reactions<\/span><span style=\"font-weight: 400;\">, stroke, and <\/span><span style=\"font-weight: 400;\">cardiovascular<\/span><span style=\"font-weight: 400;\"> events will require immediate medical attention. They all have the potential for causing chronic and even lifelong complications. Vision loss due to <\/span><span style=\"font-weight: 400;\">NAION<\/span> <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3721361\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">will be permanent<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2 id=\"warnings\">Viagra contraindications &amp; warnings<\/h2>\n<p><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> and similar drugs may not be suitable for everyone. Besides <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> can cause problems in people with pre-existing conditions. Other potential problems include abuse or overdose.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Abuse and dependence<\/span><\/h3>\n<p><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4623654\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Most <\/span><span style=\"font-weight: 400;\">healthcare professionals<\/span><\/a><span style=\"font-weight: 400;\"> do not think <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> and similar drugs cause physical dependence, tolerance, or withdrawal. However, <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> and other <\/span><span style=\"font-weight: 400;\">erectile dysfunction<\/span><span style=\"font-weight: 400;\"> medications (EDMs) are <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC2909482\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">commonly abused,<\/span><\/a><span style=\"font-weight: 400;\"> usually by young men engaged in high levels of <\/span><span style=\"font-weight: 400;\">sexual activity<\/span><span style=\"font-weight: 400;\"> with multiple partners. These men often use recreational drugs that can cause <\/span><span style=\"font-weight: 400;\">erectile dysfunction<\/span><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4354216\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">making chronic use of EDMs necessary<\/span><\/a><span style=\"font-weight: 400;\">. While <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\"> are a concern, sexually transmitted diseases and potential <\/span><span style=\"font-weight: 400;\">drug interactions<\/span><span style=\"font-weight: 400;\"> with other illicit or recreational drugs are a greater concern.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">While <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> does not cause physical dependence, the chronic overuse of EDMs can rise to the level of substance abuse disorder. Ending the abuse may require therapy or treatment.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Overdose<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">An overdose of <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> will increase the likelihood and severity of <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">. Call a poison helpline or seek emergency medical attention if an overdose is suspected.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Restrictions<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> may cause problems in people with pre-existing medical or physical conditions. Some people can take <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">, but their pre-existing conditions may require some caution. Usually, the healthcare provider will monitor the patient more closely. The goal is to spot problems before they become major medical issues.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Because <\/span><span style=\"font-weight: 400;\">sexual activity<\/span><span style=\"font-weight: 400;\"> raises the risk of heart or bleeding problems, <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> is used cautiously and with extra monitoring in anyone who has had recent <\/span><b>symptomatic <\/b><b>cardiovascular<\/b><b> or vascular problems<\/b><span style=\"font-weight: 400;\"> such as <\/span><span style=\"font-weight: 400;\">heart attack<\/span><span style=\"font-weight: 400;\">, stroke, <\/span><span style=\"font-weight: 400;\">heart disease<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">heart failure<\/span><span style=\"font-weight: 400;\">, or similar disorders in the last 6 months.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Because of the risk of sudden and permanent vision loss, healthcare providers will prescribe <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> with great caution to anyone with a history of <\/span><b>non-arteritic anterior ischemic neuropathy (<\/b><b>NAION<\/b><b>)<\/b><span style=\"font-weight: 400;\"> or risk factors for <\/span><span style=\"font-weight: 400;\">NAION<\/span><span style=\"font-weight: 400;\"> such as <\/span><b>optic disk crowding<\/b><span style=\"font-weight: 400;\"> or a <\/span><b>family history of degenerative retinal disorders<\/b><span style=\"font-weight: 400;\">, particularly <\/span><b>retinitis pigmentosa<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H<\/span><span style=\"font-weight: 400;\">ealthcare providers will be cautious about prescribing <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> to people with <\/span><b>blood pressure problems<\/b><span style=\"font-weight: 400;\"> including high or <\/span><span style=\"font-weight: 400;\">low blood pressure<\/span><span style=\"font-weight: 400;\">, pulmonary hypertension, low blood volume, obstructions to blood flowing out of the heart, and any inability of the body to regulate blood pressure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sildenafil<\/span><span style=\"font-weight: 400;\"> can cause painful erections, so it is generally avoided in men with <\/span><b>penile<\/b><b> deformities<\/b><span style=\"font-weight: 400;\"> (<\/span><span style=\"font-weight: 400;\">Peyronie\u2019s disease<\/span><span style=\"font-weight: 400;\">, cavernosal fibrosis, or angulation) or other conditions that increase the risk for <\/span><span style=\"font-weight: 400;\">priapism<\/span><span style=\"font-weight: 400;\"> such as <\/span><span style=\"font-weight: 400;\">sickle cell anemia<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">leukemia<\/span><span style=\"font-weight: 400;\">, or multiple myeloma.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sildenafil<\/span><span style=\"font-weight: 400;\"> is associated with bleeding events, so people with <\/span><b>bleeding problems<\/b><span style=\"font-weight: 400;\"> will be prescribed <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> cautiously and may need extra monitoring.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Because <\/span><span style=\"font-weight: 400;\">sildenafil<\/span><span style=\"font-weight: 400;\"> is broken down by the liver and excreted in the urine, people with <\/span><b>severe kidney disease <\/b><span style=\"font-weight: 400;\">or <\/span><b>liver problems<\/b><span style=\"font-weight: 400;\"> may need to be monitored or have doses reduced.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Pregnancy and <\/span><span style=\"font-weight: 400;\">breastfeeding<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> is not prescribed to women, so its safety during pregnancy or <\/span><span style=\"font-weight: 400;\">breastfeeding<\/span><span style=\"font-weight: 400;\"> has not been studied. If your doctor recommends the use of another sildenafil product, like Revatio, during pregnancy, they will weigh the risks of untreated pulmonary arterial hypertension to the potential benefits of the drug. There is only limited safety data for this scenario.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Children<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The U.S. Food and Drug Administration (<\/span><span style=\"font-weight: 400;\">FDA<\/span><span style=\"font-weight: 400;\">) has not approved <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> for use in anyone younger than 18.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Seniors<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Sexual activity<\/span><span style=\"font-weight: 400;\"> raises the risk of heart or vascular problems such as <\/span><span style=\"font-weight: 400;\">heart attack<\/span><span style=\"font-weight: 400;\"> and stroke. For this reason, <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> is used with caution in men older than the age of 50. Men with circulatory or <\/span><span style=\"font-weight: 400;\">heart problems<\/span><span style=\"font-weight: 400;\"> may need to weigh the benefits and risks of <\/span><span style=\"font-weight: 400;\">sexual activity<\/span><span style=\"font-weight: 400;\"> with a healthcare provider before taking <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2 id=\"interactions\">Viagra interactions<\/h2>\n<p><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> has several interactions that can cause problems. This includes food. While <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> can be taken with a meal, grapefruit or <\/span><span style=\"font-weight: 400;\">grapefruit juice<\/span><span style=\"font-weight: 400;\"> should be avoided. Grapefruit has substances that block the liver <\/span><span style=\"font-weight: 400;\">enzyme<\/span><span style=\"font-weight: 400;\"> that breaks down <\/span><span style=\"font-weight: 400;\">sildenafil<\/span><span style=\"font-weight: 400;\">, raising the risk of <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The menu should also not include alcohol, or at least not very much. Alcohol lowers blood pressure, so combining it with drugs that lower blood pressure, like <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">, can cause blood pressure to dip too low. In addition, alcohol worsens <\/span><span style=\"font-weight: 400;\">erectile dysfunction<\/span><span style=\"font-weight: 400;\">, neutralizing any benefit that <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> has to offer.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Because of potentially <\/span><span style=\"font-weight: 400;\">serious side effects<\/span><span style=\"font-weight: 400;\">, people taking <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> should be well aware of what prescription and <\/span><span style=\"font-weight: 400;\">over-the-counter<\/span><span style=\"font-weight: 400;\"> drugs can cause problems when taken with <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">. Some drugs should never be taken with <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> because the hazards are too great, while others can be taken but require extra monitoring.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Drugs that are contraindicated with Viagra and should never be taken in conjunction are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nitrates<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Guanylate cyclase (GC) stimulators such as Adempas (<\/span><span style=\"font-weight: 400;\">riociguat<\/span><span style=\"font-weight: 400;\">) and Verquvo\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nitrites<\/span><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.singlecare.com\/drug-classes\/alpha-blockers\"><span style=\"font-weight: 400;\">alpha blockers<\/span><\/a><span style=\"font-weight: 400;\">, and blood pressure medications can increase the risk of <\/span><span style=\"font-weight: 400;\">low blood pressure if taken with Viagra<\/span><span style=\"font-weight: 400;\">.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not combine other erectile dysfunction<\/span><span style=\"font-weight: 400;\"> medications (EDMs) with <\/span><span style=\"font-weight: 400;\">Viagra. Some include<\/span> <a href=\"https:\/\/www.singlecare.com\/prescription\/cialis\/what-is\"><span style=\"font-weight: 400;\">Cialis<\/span><\/a><span style=\"font-weight: 400;\"> (<\/span><span style=\"font-weight: 400;\">tadalafil<\/span><span style=\"font-weight: 400;\">), <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/levitra\"><span style=\"font-weight: 400;\">Levitra<\/span><\/a><span style=\"font-weight: 400;\"> (<\/span><span style=\"font-weight: 400;\">vardenafil<\/span><span style=\"font-weight: 400;\">), or <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/alprostadil\"><span style=\"font-weight: 400;\">alprostadil<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Drugs that should be used cautiously in patients taking Viagra include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Antibiotics such as <\/span><span style=\"font-weight: 400;\">erythromycin<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">HIV medications such as <\/span><span style=\"font-weight: 400;\">ritonavir<\/span><span style=\"font-weight: 400;\"> and <\/span><span style=\"font-weight: 400;\">saquinavir<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A<\/span><span style=\"font-weight: 400;\">ntifungals<\/span><span style=\"font-weight: 400;\"> like <\/span><span style=\"font-weight: 400;\">ketoconazole<\/span><span style=\"font-weight: 400;\"> and <\/span><span style=\"font-weight: 400;\">itraconazole<\/span><span style=\"font-weight: 400;\">)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.singlecare.com\/drug-classes\/benzodiazepines\"><span style=\"font-weight: 400;\">Benzodiazepines<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Corticosteroids<\/span><\/li>\n<\/ul>\n<h2 id=\"how-to-avoid-side-effects\">How to avoid Viagra side effects<\/h2>\n<p><span style=\"font-weight: 400;\">Many men will experience <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\"> when taking <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">, but a few tips can ensure that this medicine is taken safely.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">1. Take <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> only under the care of a healthcare provider<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">To minimize <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">, the place to start is by getting a prescription from a licensed healthcare provider who performs an in-person physical examination and a complete medical history.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">2. Tell the doctor about all <\/span><span style=\"font-weight: 400;\">medical conditions<\/span><span style=\"font-weight: 400;\"> and medications<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">When a licensed healthcare provider is performing an in-person physical examination, make sure that person is informed about all current and previous <\/span><span style=\"font-weight: 400;\">medical conditions<\/span><span style=\"font-weight: 400;\">. The most important <\/span><a href=\"https:\/\/dailymed.nlm.nih.gov\/dailymed\/drugInfo.cfm?setid=0b0be196-0c62-461c-94f4-9a35339b4501\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">conditions<\/span><\/a><span style=\"font-weight: 400;\"> they need to know about are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Heart problems<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Recent heart surgery<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stroke<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Blood pressure problems<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pulmonary hypertension<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Bleeding problems<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Blood cell disorders such as <\/span><span style=\"font-weight: 400;\">sickle cell anemia<\/span><span style=\"font-weight: 400;\"> or <\/span><span style=\"font-weight: 400;\">leukemia<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stomach ulcers<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Eye problems, especially personal or family history of <\/span><span style=\"font-weight: 400;\">retinitis pigmentosa<\/span><span style=\"font-weight: 400;\"> or vision loss<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Liver problems<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kidney problems<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Abnormal penis shape<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A history of prolonged (&gt;4 hours) erections<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Any history of alcohol abuse\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">All medications, <\/span><span style=\"font-weight: 400;\">over-the-counter<\/span><span style=\"font-weight: 400;\"> medications, supplements, and remedies being taken<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">3. Only purchase <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> from a licensed pharmacist<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Once you have a prescription, only purchase the medicine from a licensed pharmacist, preferably from the pharmacy that has all your records. Purchasing <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> or other <\/span><span style=\"font-weight: 400;\">erectile dysfunction<\/span><span style=\"font-weight: 400;\"> medications through alternative channels\u2014<\/span><a href=\"https:\/\/www.singlecare.com\/blog\/counterfeit-viagra\/\"><span style=\"font-weight: 400;\">especially the internet<\/span><\/a><span style=\"font-weight: 400;\">\u2014could result in the purchase of counterfeit, unsafe, or improperly dosed medications. Some improperly purchased medications won\u2019t work at all, some will increase the risk of <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">4. Take <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> as directed<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Once the <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> prescription has been filled by a licensed pharmacy, take the dose as prescribed, usually 25\u2013100 mg taken at least 30 minutes before <\/span><span style=\"font-weight: 400;\">sexual activity<\/span><span style=\"font-weight: 400;\">. Never take more than prescribed. Never take more than one dose each day.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">5. Avoid grapefruit and <\/span><span style=\"font-weight: 400;\">grapefruit juice<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">While <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> can be taken with food, grapefruit and <\/span><span style=\"font-weight: 400;\">grapefruit juice<\/span><span style=\"font-weight: 400;\"> should be avoided on the day a dose is taken. Grapefruit has substances that slow down the breakdown of <\/span><span style=\"font-weight: 400;\">sildenafil<\/span><span style=\"font-weight: 400;\"> in the body, raising the risk of <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">, including some of the worst <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">6. Do not drink too much alcohol<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Both <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> and alcohol lower blood pressure, so the combination could cause <\/span><span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\"> such as dizziness and fainting. More importantly, alcohol worsens <\/span><span style=\"font-weight: 400;\">erectile dysfunction<\/span><span style=\"font-weight: 400;\">. Drinking does help by lowering inhibitions, but it also works against <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Resources for <\/span><span style=\"font-weight: 400;\">Viagra<\/span> <span style=\"font-weight: 400;\">side effects<\/span><span style=\"font-weight: 400;\">:<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/pubchem.ncbi.nlm.nih.gov\/compound\/135398744\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Sildenafil<\/span><span style=\"font-weight: 400;\"> compound summary<\/span><\/a><span style=\"font-weight: 400;\">, U.S. National Library of Medicine<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.pdr.net\/drug-summary\/Viagra-sildenafil-citrate-471\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Sildenafil citrate<\/span><span style=\"font-weight: 400;\"> drug summary<\/span><\/a><span style=\"font-weight: 400;\">, Prescriber\u2019s Digital Reference<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC2909482\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Recreational use of <\/span><span style=\"font-weight: 400;\">erectile dysfunction<\/span><span style=\"font-weight: 400;\"> medications in undergraduate men in the United States: Characteristics and associated risk factors<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">Archives of Sexual Behaviors<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC1716731\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Recreational <\/span><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> use and sexual risk among drug abusing men<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">American Journal of Infectious Diseases<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4354216\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">The synergistic (MARATHON) effect of combined methamphetamine with sexual stimulant drugs on increasing the likelihood of high-risk sexual behaviors<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">Addiction &amp; Health<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3721361\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Treatment of <\/span><span style=\"font-weight: 400;\">nonarteritic anterior ischemic optic neuropathy<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">Survey of Ophthalmology<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/online.epocrates.com\/drugs\/138810\/Viagra\/Monograph\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Viagra<\/span><\/a><span style=\"font-weight: 400;\">, Epocrates<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/dailymed.nlm.nih.gov\/dailymed\/drugInfo.cfm?setid=0b0be196-0c62-461c-94f4-9a35339b4501\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Viagra<\/span><span style=\"font-weight: 400;\"> prescribing information<\/span><\/a><span style=\"font-weight: 400;\">, U.S. National Library of Medicine<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Viagra side effects | Serious side effects | Blood pressure | Vision loss | How long do side effects last? | Warnings | Interactions | How to avoid side effects Viagra is a brand-name prescription drug approved for the treatment of erectile dysfunction. Sildenafil citrate, the active ingredient in Viagra, belongs to a class of [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":40086,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4589],"tags":[788,8922,12752],"coauthors":[8861],"class_list":["post-40079","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-drug-info","tag-drug-safety","tag-erectile-dysfunction","tag-medication-side-effects","wpautop"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Viagra side effects and how to avoid them | SingleCare<\/title>\n<meta name=\"description\" content=\"Headache, diarrhea, and nausea are common Viagra side effects. 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