{"id":54403,"date":"2022-10-06T09:23:02","date_gmt":"2022-10-06T13:23:02","guid":{"rendered":"https:\/\/www.singlecare.com\/blog\/?p=54403"},"modified":"2026-03-17T15:01:04","modified_gmt":"2026-03-17T19:01:04","slug":"vitamin-d-side-effects","status":"publish","type":"post","link":"https:\/\/www.singlecare.com\/blog\/vitamin-d-side-effects\/","title":{"rendered":"Vitamin D side effects and how to avoid them"},"content":{"rendered":"<p><span style=\"font-weight: 400;\"><a href=\"#common-vitamin-d-side-effects\">Common vitamin D side effects<\/a>\u00a0| <a href=\"#serious-side-effects\">Serious side effects<\/a> | <a href=\"#vitamin-d-toxicity\">Vitamin D toxicity<\/a> | <a href=\"#side-effects-timeline\">Side effects timeline<\/a> | <a href=\"#contraindications\">Contraindications<\/a> | <a href=\"#warnings\">Warnings<\/a> | <a href=\"#interactions\">Interactions<\/a> | <a href=\"#how-to-avoid-side-effects\">How to avoid side effects<\/a> | <a href=\"#how-to-treat-side-effects\">How to treat side effects<\/a><\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Zb_tJuORr3Y?rel=0\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><a href=\"https:\/\/www.singlecare.com\/prescription\/vitamin-d-ergocalciferol\"><span style=\"font-weight: 400;\">Vitamin D<\/span><\/a><span style=\"font-weight: 400;\"> is an essential nutrient responsible for calcium absorption and maintaining adequate levels of calcium in the body. It\u2019s important for bone health, bone strength, nerve functioning, muscle strength, and the immune system. Vitamin D is normally produced by the skin when it is exposed to the sun\u2019s ultraviolet-B radiation (UVB) but it also can be found in certain vitamin supplements and some foods.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Having low vitamin D in the body is both a serious and common problem. <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK441912\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Many children<\/span><\/a><span style=\"font-weight: 400;\"> have a vitamin D deficiency, and the problem is common in adults who are overweight, pregnant, use sunblock, or otherwise don\u2019t get enough sun exposure. Chronic vitamin D deficiency can lead to weak bones, bone fractures, and rickets (in children), and it is the major cause of generalized bone pain and muscle pain complaints. People take vitamin D supplements to avoid or correct vitamin D deficiencies. These supplements\u2014available as synthetic <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/vitamin-d-ergocalciferol\"><span style=\"font-weight: 400;\">vitamin D2<\/span><span style=\"font-weight: 400;\"> (<\/span><span style=\"font-weight: 400;\">ergocalciferol<\/span><\/a><span style=\"font-weight: 400;\">) and <\/span><a href=\"https:\/\/www.singlecare.com\/prescription\/vitamin-d3\"><span style=\"font-weight: 400;\">vitamin D3<\/span><span style=\"font-weight: 400;\"> (<\/span><span style=\"font-weight: 400;\">cholecalciferol<\/span><\/a><span style=\"font-weight: 400;\">)\u2014come in both over-the-counter and prescription dose strengths. <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/vitamin-d-prescription\/\"><span style=\"font-weight: 400;\">Higher-dose prescription vitamin D is usually given<\/span><\/a><span style=\"font-weight: 400;\"> to people with vitamin D deficiency, low parathyroid function (hypoparathyroidism, a condition that causes low blood calcium), and bone softening (osteomalacia). Side effects from both over-the-counter and vitamin D supplements are generally only a problem if too much vitamin D is taken over a long period.<\/span><\/p>\n<p><strong>RELATED: <a href=\"https:\/\/www.singlecare.com\/prescription\/vitamin-d-ergocalciferol\/what-is\">Learn more about vitamin D2<\/a> | <a href=\"https:\/\/www.singlecare.com\/prescription\/vitamin-d3\/what-is\">Learn more about vitamin D3<\/a><\/strong><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/www.singlecare.com\/resources\/discount-vitamins-and-supplements\">Discount vitamins &amp; supplements<\/a><\/p>\n<h2 id=\"common-vitamin-d-side-effects\"><span style=\"font-weight: 400;\">Common side effects of vitamin D<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Common side effects of vitamin D supplements may include:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nausea and vomiting<\/span><\/li>\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;\">Irritability\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tiredness<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Excess thirst<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Frequent urination<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Appetite and weight loss<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Some adverse effects are due to taking too much vitamin D. In those cases, vitamin D toxicity (hypervitaminosis D) can cause several problems:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">High levels of calcium in the blood (hypercalcemia)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vomiting<\/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;\">Headache<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Irritability<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Loss of appetite<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Weight loss<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Weakness<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Constipation<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kidney dysfunction including:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Excessive or frequent urination<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Thirst<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">High blood pressure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">High calcium in the urine<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Kidney damage (which could cause death)<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Acidic blood (acidosis)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Anemia<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Calcium deposits (calcification) in the blood vessels, heart, lungs, kidneys, and other soft tissues<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Osteoporosis (a condition where the bones become weak and brittle)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Slow growth in children<\/span><\/li>\n<\/ul>\n<h2 id=\"serious-side-effects\"><span style=\"font-weight: 400;\">Serious side effects of vitamin D<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Many of the common side effects of vitamin D overdose are very serious and related to how long calcium remains at high levels in the body. These include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kidney dysfunction<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kidney damage<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kidney failure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Acidosis<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Anemia<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Calcification of soft tissues, blood vessels, and organs<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Osteoporosis<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Slow growth and dwarfism (in children)<\/span><\/li>\n<\/ul>\n<h3 id=\"vitamin-d-toxicity\"><span style=\"font-weight: 400;\">Vitamin D toxicity (hypervitaminosis D)<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Overdosing on vitamin D for months or years can cause a rare but serious condition called hypervitaminosis D. High vitamin D levels in the blood raises calcium levels to dangerous levels and also leeches calcium from the bones, producing the side effects listed above. Overdosing on vitamin D only happens when people take too many vitamin D supplements or are prescribed high doses of vitamin D. However, people prescribed high-dose vitamin D will have regular blood tests to measure vitamin D and calcium levels to avoid vitamin D toxicity. About <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK557876\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">4,000 people a year<\/span><\/a><span style=\"font-weight: 400;\"> in the United States are diagnosed with vitamin D toxicity. In some extremely rare cases, people can have <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC6158375\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">hypersensitivity to vitamin D<\/span><\/a><span style=\"font-weight: 400;\">. In those cases, normal vitamin D intake could be an overdose and cause high blood calcium. In these cases, vitamin D intake will be restricted.\u00a0<\/span><\/p>\n<h2 id=\"side-effects-timeline\"><span style=\"font-weight: 400;\">How soon do vitamin D side effects start?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Vitamin D side effects usually take months or years of overdosing to become a problem, though some of the milder side effects such as vomiting or excessive urination may be some of the first symptoms to appear.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">How long do vitamin D side effects last?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The side effects of vitamin D toxicity can last for <\/span><a href=\"https:\/\/dailymed.nlm.nih.gov\/dailymed\/drugInfo.cfm?setid=acb61678-d23d-405d-8c14-1a16cfd3a776\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">two months or more<\/span><\/a><span style=\"font-weight: 400;\"> after vitamin D and calcium intake have been restricted. In terms of treatment for vitamin D toxicity, some patients may need to limit dietary calcium and consume excess fluids. More severe cases require aggressive treatment with IV saline, diuretics (to help remove calcium from the body), and corticosteroids. Some patients need dialysis and\/or other medications.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">What are the long-term side effects of vitamin D?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Many side effects of vitamin D supplements are long-term side effects due to taking too much vitamin D. What constitutes an overdose has not been determined, but the Institute of Medicine has set the upper safe limit at <\/span><a href=\"https:\/\/www.aafp.org\/pubs\/afp\/issues\/2011\/0601\/p1352.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">4,000 International Units<\/span><\/a><span style=\"font-weight: 400;\"> daily. Overdosing could take years before becoming a problem (if problems develop at all). There is a small window between where vitamin D is therapeutic and where it can be toxic. Prescription doses can be as high as <\/span><a href=\"https:\/\/dailymed.nlm.nih.gov\/dailymed\/drugInfo.cfm?setid=acb61678-d23d-405d-8c14-1a16cfd3a776\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">500,000 IU<\/span><\/a><span style=\"font-weight: 400;\"> a day in certain cases, so healthcare providers will monitor blood levels of both vitamin D and calcium at least every two weeks in these patients. They will modify treatment if high blood calcium becomes a problem. Many patients only need to take a small daily dose or a larger weekly dose (for example, 50,000 IU per week) and will be monitored occasionally, but not as frequently as those who take higher doses. Your healthcare provider will tell you how much vitamin D to take and how often you will need blood work.<\/span><\/p>\n<h2 id=\"contraindications\"><span style=\"font-weight: 400;\">Vitamin D contraindications<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Vitamin D supplements should never be taken by people with:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vitamin D toxicity<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">High blood calcium<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Allergies to any of the ingredients in the supplement<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Renal osteodystrophy (a complication of kidney disease that affects the bones and soft tissues)<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Pregnancy<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">High-dose vitamin D is not recommended in pregnant women, although taking the suggested daily allowance is not prohibited. Vitamin D toxicity can affect a fetus and cause heart defects and developmental disabilities.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Breastfeeding<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">High-dose vitamin D is not recommended in women who are breastfeeding. The infant is at risk of high blood calcium due to ingesting high vitamin D doses through breast milk. If you are breastfeeding, consult your healthcare provider before taking vitamin D.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Children<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Children who need vitamin D supplementation will be prescribed or recommended an individualized dose and carefully monitored with regular blood tests to prevent vitamin D toxicity.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Older adults<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">High-dose vitamin D is not well-studied in older patients. People aged 65 and older are less efficient at absorbing vitamin D from foods or supplements. If vitamin D supplementation is a concern, blood tests can help identify a vitamin D deficiency. A healthcare provider can then suggest a supplementation regimen. For prescription vitamin D, a healthcare provider will start at the lowest possible dose and regularly perform blood tests to monitor vitamin D and calcium levels.\u00a0<\/span><\/p>\n<h2 id=\"warnings\"><span style=\"font-weight: 400;\">Vitamin D warnings<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">As a supplement widely available in over-the-counter vitamins and multivitamins, vitamin D has only a few warnings and cautions. The most important warning: Don\u2019t overdo it. Either follow the suggested guidelines or take the prescribed dose, but no more than that.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Cautions<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">A few medical conditions may cause problems when taking vitamin D, particularly in high doses. These include:<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Kidney stones. <\/b><span style=\"font-weight: 400;\">Raising vitamin D levels in the body can increase calcium levels in urine, which can contribute to the growth of some types of kidney stones.<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><b>Kidney dysfunction. <\/b><span style=\"font-weight: 400;\">People with kidney disease are more likely to experience high calcium when taking vitamin D. Higher calcium in the blood makes the kidneys work harder to filter blood, putting an added strain on the kidneys.\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><b>High phosphate levels. <\/b><span style=\"font-weight: 400;\">Vitamin D regulates the absorption of phosphate and calcium through the intestines. Higher levels of vitamin D will cause the digestive system to absorb more phosphate, worsening pre-existing high phosphate levels.<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><b>Malabsorption syndrome. <\/b><span style=\"font-weight: 400;\">Some medical conditions such as <\/span><a href=\"https:\/\/www.singlecare.com\/conditions\/crohns-disease-treatment-and-medications\"><span style=\"font-weight: 400;\">Crohn\u2019s disease<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.singlecare.com\/conditions\/cystic-fibrosis-treatment-and-medications\"><span style=\"font-weight: 400;\">cystic fibrosis<\/span><\/a><span style=\"font-weight: 400;\">, liver disease, or gallbladder problems diminish the digestive system\u2019s ability to absorb fat-soluble vitamins like vitamin D. In those cases, higher amounts of vitamin D may need to be given.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Abuse and dependence<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Vitamin D has no risk of drug abuse or drug dependence.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Overdose<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">A single overdose of vitamin D will not cause major problems, though there may be digestive system issues. If too much vitamin D is taken at once, call a poison control center for advice. If a child takes too much vitamin D, call poison control. Because vitamin D toxicity can be very serious, take the child to the emergency room.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Daily and chronic overdosing, however, can result in vitamin D toxicity, a serious medical condition characterized by the side effects listed above. If any cluster of these symptoms is noticed, immediate medical help is needed.<\/span><\/p>\n<h2 id=\"interactions\"><span style=\"font-weight: 400;\">Vitamin D interactions<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Vitamin D supplements have few drug interactions. Most involve drugs that reduce the effectiveness of taking the supplement.\u00a0<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>Vitamin D. <\/b><span style=\"font-weight: 400;\">To avoid vitamin D toxicity, don\u2019t combine vitamin D supplements with other vitamin D supplements unless the total daily dose is within guidelines.<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><b>Calcium. <\/b><span style=\"font-weight: 400;\">To avoid high calcium, be prudent in taking <a href=\"https:\/\/www.singlecare.com\/prescription\/calcium-carb-cholecalciferol\/what-is\">calcium supplements<\/a> or medicines containing calcium such as some antacids.<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><b>Mineral oil. <\/b><span style=\"font-weight: 400;\">Mineral oil can interfere with the body\u2019s absorption of vitamin D through the intestines.<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><b>Bile acid resins. <\/b><span style=\"font-weight: 400;\">Used to treat high cholesterol, bile acid resins interfere with the digestive system\u2019s ability to absorb fat-soluble vitamins like vitamin D.<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-level=\"1\"><b>Thiazide diuretics. <\/b><span style=\"font-weight: 400;\">Combining vitamin D2 with <\/span><a href=\"https:\/\/www.singlecare.com\/drug-classes\/thiazide-diuretics\"><span style=\"font-weight: 400;\">thiazide diuretics<\/span><\/a><span style=\"font-weight: 400;\"> such as hydrochlorothiazide can cause high calcium in people with low parathyroid function.<\/span><\/li>\n<\/ul>\n<h2 id=\"how-to-avoid-side-effects\"><span style=\"font-weight: 400;\">How to avoid vitamin D side effects<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Avoiding vitamin D side effects involves a simple rule: <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/how-much-vitamin-d-should-i-take\/\"><span style=\"font-weight: 400;\">don\u2019t take too much<\/span><\/a><span style=\"font-weight: 400;\">. Here\u2019s how to do it.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">1. Know the right amount of vitamin D to take each day<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Don\u2019t guess. Look this up. There are two major guidelines for vitamin D intake. The Endocrine Society recommends <\/span><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK441912\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">1,500 to 2,000 IU<\/span><\/a><span style=\"font-weight: 400;\"> of vitamin D daily for adults. Infants less than one-year-old should get 400 to 1,000 IU daily, and children and adolescents should get 600 to 1,000 IU each day. The <\/span><a href=\"https:\/\/www.aafp.org\/pubs\/afp\/issues\/2011\/0601\/p1352.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Institute of Medicine<\/span><\/a><span style=\"font-weight: 400;\"> suggests lower daily doses: 400 IU daily for children and adults, and up to 800 IU daily for adults 71 years and older. Both recommendations are well below the maximum safe daily dose of 4,000 IU. Either way, your best bet is to ask your healthcare provider or your child\u2019s pediatrician for a dosage recommendation based on lab results and\/or guidelines.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">2. Know how much vitamin D is being taken each day<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Many foods are fortified with vitamin D including milk, breakfast cereals, bread, and children\u2019s foods. It may be possible that there\u2019s enough vitamin D already in the diet, particularly for kids with a fondness for these foods. Check all the foods being eaten each day. Check any dietary supplements, like fish oil, for vitamin D. Add up the daily vitamin D intake. This will determine how many vitamin D supplements need to be taken.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">3. Know how much calcium to take each day<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Vitamin D toxicity is also related to calcium intake. The IOM recommends a daily calcium dose of:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Children ages 1 to 3 years old: 500 mg per day<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Children ages 4 to 8 years old: 800 mg per day<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Children\/teenagers ages 9 to 18 years old: 1,300 mg per day<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Women 19 to 50 years old: 800 mg per day<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Women &gt; 50 years old: 1,000 mg per day<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Men up to 71 years old: 800 mg per day<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Men 71 years and older: 1,000 mg per day<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Again, there may be enough calcium in the diet, so take a look at all the other foods, dietary supplements, and calcium-containing drugs that are being taken to decide how much calcium needs to be added in the form of supplements.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">4. Tell the prescriber about all medical conditions<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">If vitamin D is being prescribed by a healthcare professional, make sure the prescriber knows about all medical conditions and any drugs or supplements being taken. The most important are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kidney disease<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kidney stones<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">High phosphate in the blood<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Crohn\u2019s disease<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gallbladder disease<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Liver disease<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cystic fibrosis<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pregnancy or pregnancy plans<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Breastfeeding or breastfeeding plans<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">5. Keep all follow-up appointments<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">If prescribed high doses of vitamin D, keep all follow-up and lab appointments. Many of the doses prescribed are enough to produce vitamin D toxicity, so regular blood tests are required to spot high levels of vitamin D or calcium before kidneys or tissues are damaged.<\/span><\/p>\n<h2 id=\"how-to-treat-side-effects\"><span style=\"font-weight: 400;\">How to treat side effects of vitamin D<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">If any cluster of symptoms associated with vitamin D toxicity is noticed, stop using vitamin D and calcium supplements. Get immediate medical attention.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Sources<\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/dailymed.nlm.nih.gov\/dailymed\/drugInfo.cfm?setid=acb61678-d23d-405d-8c14-1a16cfd3a776\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Drisdol prescribing information<\/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:\/\/online.epocrates.com\/drugs\/188101\/ergocalciferol-vitamin-D2\/Adult-Dosing\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Ergocalciferol<\/span><\/a><span style=\"font-weight: 400;\">, Epocrates<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.pdr.net\/drug-summary\/Ergocalciferol-ergocalciferol-24306\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Ergocalciferol 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.aafp.org\/pubs\/afp\/issues\/2011\/0601\/p1352.html\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">IOM releases report on dietary reference intakes for calcium and vitamin D<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">American Family Physician<\/span><\/i><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/books\/NBK441912\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Vitamin D<\/span><\/a><span style=\"font-weight: 400;\">, StatPearls<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.frontiersin.org\/articles\/10.3389\/fendo.2018.00550\/full\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Vitamin D toxicity\u2014a clinical review<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><i><span style=\"font-weight: 400;\">Frontiers in Endocrinology<\/span><\/i><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Common vitamin D side effects\u00a0| Serious side effects | Vitamin D toxicity | Side effects timeline | Contraindications | Warnings | Interactions | How to avoid side effects | How to treat side effects Vitamin D is an essential nutrient responsible for calcium absorption and maintaining adequate levels of calcium in the body. It\u2019s important [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":54404,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4589],"tags":[12752,812],"coauthors":[8861],"class_list":["post-54403","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-drug-info","tag-medication-side-effects","tag-supplements","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>Vitamin D side effects and how to avoid them | SingleCare<\/title>\n<meta name=\"description\" content=\"Vitamin D toxicity is a common vitamin D side effect. 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