{"id":49118,"date":"2022-02-16T09:30:52","date_gmt":"2022-02-16T14:30:52","guid":{"rendered":"https:\/\/www.singlecare.com\/blog\/?p=49118"},"modified":"2024-09-27T10:08:11","modified_gmt":"2024-09-27T14:08:11","slug":"vitamin-absorption","status":"publish","type":"post","link":"https:\/\/www.singlecare.com\/blog\/vitamin-absorption\/","title":{"rendered":"How to make sure you absorb your supplements"},"content":{"rendered":"<p><span style=\"font-weight: 400;\"><a href=\"#what-is-bioavailability\">What is bioavailability?<\/a> | <a href=\"#how-are-vitamins-absorbed\">How are vitamins absorbed?<\/a> | <a href=\"#what-affects-it\">What affects vitamin absorption?<\/a> | <a href=\"#calcium\">Calcium<\/a> | <a href=\"#iron\">Iron<\/a> | <a href=\"#magnesium\">Magnesium<\/a> | <a href=\"#turmeric\">Turmeric<\/a> | <a href=\"#B12\">Vitamin B12<\/a> | <a href=\"#zinc\">Zinc<\/a> | <a href=\"#vitaminc\">Vitamin C<\/a> | <a href=\"#supplements-worth-it\">Are supplements worth it?<\/a><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Did you know that<\/span> <a href=\"https:\/\/www.cdc.gov\/nchs\/products\/databriefs\/db399.htm\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">more than half<\/span><\/a><span style=\"font-weight: 400;\"> of all Americans aged 20 and older take dietary supplements? In fact, 80% of women aged 60 and older take some kind of supplement. The bioavailability of vitamins is one thing that many people fail to consider when they add vitamins or supplements to their diet. Bioavailability is how readily your body is able to absorb the nutrient, which plays a large role in how effective a supplement or vitamin is. If you\u2019re not sure that you\u2019re getting the most out of your supplements, keep reading.\u00a0<\/span><\/p>\n<h2 id=\"what-is-bioavailability\">What is bioavailability?<\/h2>\n<p><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/3911266\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Bioavailability<\/span><\/a><span style=\"font-weight: 400;\"> is the scientific term for how much of a nutrient is absorbed or made available to the body. In other words, just because a food or supplement contains a specific nutrient, it\u2019s not a guarantee that your body is actually able to absorb and put it all to use. Some nutrients are more bioavailable than others. If your body can\u2019t absorb the substance, it won\u2019t reap any of the benefits.\u00a0<\/span><\/p>\n<h2 id=\"how-are-vitamins-absorbed\">How are vitamins absorbed by the body?<\/h2>\n<p><span style=\"font-weight: 400;\">When you ingest something, it moves through your digestive system. Your body absorbs helpful nutrients for use by your cells or stores the excess. But not everything is able to be used. Those nutrients that aren\u2019t bioavailable are destroyed or excreted. That means just because a food has a particular micronutrient or vitamin in it doesn\u2019t necessarily mean that your body is putting it to use. Absorption matters, and quite a few things can affect vitamin absorption.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\t\t<div class=\"singlecare-dynamic-newsletter-wrapper sin-newsletter-wrapper\">\n\t\t\t<span class=\"heading\">Get our wellness newsletter<\/span>\n\t\t\t<form class=\"form-wrapper\" data-newsletter-form=\"1\" data-subsource=\"Wellness Newsletter\">\n\t\t\t\t<div class=\"input-wrapper\">\n\t\t\t\t\t<label for=\"dynamic-email\">Email<\/label>\n\t\t\t\t\t<input type=\"email\" id=\"dynamic-email\" class=\"email\" required>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"input-wrapper\">\n\t\t\t\t\t<input class=\"submit-form-btn\" type=\"submit\" value=\"Click to sign up\">\n\t\t\t\t<\/div>\n\t\t\t<\/form>\n\t\t\t<p class=\"success-message\" aria-live=\"polite\"><\/p>\n\t\t<\/div>\n\t<\/span><\/p>\n<h2 id=\"what-affects-it\">What affects vitamin absorption?<\/h2>\n<p><span style=\"font-weight: 400;\">Because all vitamins and minerals are different, what affects each\u2019s bioavailability varies. A major thing for people to consider is the correct type of the vitamin or micronutrient, says <\/span><a href=\"http:\/\/www.satjawellness.com\/about-me\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Tanja Barco<\/span><\/a><span style=\"font-weight: 400;\">, APRN-CNP, a certified functional medicine nurse practitioner with <\/span><a href=\"https:\/\/www.metrohealth.org\/physician\/tanja-barco-151126\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">MetroHealth<\/span><\/a><span style=\"font-weight: 400;\"> in Cleveland, Ohio. Things that can affect vitamin absorption include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Form (e.g., tablet vs. liquid vs. powder)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Type (e.g., calcium carbonate vs. calcium citrate)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">What you eat when you take it<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">What you drink when you take it<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Other medications, such as acid reflux medication or metformin<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gastrointestinal issues, such as celiac disease, pancreatitis, or Crohn\u2019s disease<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">How to absorb vitamins better<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The best way to absorb vitamins when you\u2019re taking supplements is to know the best practices to maximize absorption for each type\u2014and to work with your healthcare provider to determine the best form for your condition. Here is how to maximize bioavailability of supplements.\u00a0<\/span><\/p>\n<h3 id=\"calcium\">1. Take calcium with vitamin D<\/h3>\n<p><span style=\"font-weight: 400;\">Taken to help prevent osteoporosis, the two most common forms of <\/span><a href=\"https:\/\/ods.od.nih.gov\/factsheets\/Calcium-HealthProfessional\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">calcium<\/span><\/a><span style=\"font-weight: 400;\"> are carbonate and citrate. Calcium carbonate is usually less expensive, but calcium citrate has fewer side effects\u2014and both are better absorbed by the body when taken with food. Vitamin D helps calcium absorption.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Choose a calcium supplement that\u2019s combined with vitamin D, or take calcium alongside vitamin D-rich foods, like eggs (with the yolk), mushrooms, and fatty fish. Calcium supplements are available as capsules, tablets, powders, and chews\u2014and they are better absorbed in smaller doses, so stick with doses of 500 mg or less (taken several times daily).\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Calcium supplements can interfere with some common medications, including certain antibiotics, thyroid medication, and more, so be sure to disclose to your healthcare provider or pharmacist if you\u2019re taking this supplement.<\/span><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/www.singlecare.com\/prescription\/calcium-citrate\"><span style=\"font-weight: 400;\">Get calcium citrate coupon<\/span><\/a><\/p>\n<h3 id=\"iron\">2. Take iron an hour before a meal<\/h3>\n<p><span style=\"font-weight: 400;\">Iron helps transport oxygen in the blood and is found mainly in animal products or iron-fortified foods, like grains.<\/span> <a href=\"https:\/\/ods.od.nih.gov\/factsheets\/Iron-HealthProfessional\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Iron supplements<\/span><\/a><span style=\"font-weight: 400;\"> help replace iron more quickly than just <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/iron-rich-foods-anemia-diet\/\"><span style=\"font-weight: 400;\">adding more iron-rich foods into your diet<\/span><\/a><span style=\"font-weight: 400;\">, so your provider might recommend supplementation if you\u2019re low on iron or have been diagnosed with iron deficiency <\/span><a href=\"https:\/\/www.singlecare.com\/conditions\/anemia-treatment-and-medications\"><span style=\"font-weight: 400;\">anemia<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Iron bioavailability is affected by how much iron is already in your body. Low iron means greater bioavailability, while having higher levels of iron already means your body will absorb less from supplements. To improve absorption even more, take your iron supplement on an empty stomach, either one hour before or two hours after a meal. A source of vitamin C, like orange juice, might help you absorb slightly more iron.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Iron is available in various forms, including tablets and liquid. If you\u2019re taking a capsule or an extended-release tablet, be sure to take them whole, not crushed or chewed. Also, avoid taking iron with tea, coffee, milk, or soda, as these reduce absorption of iron. It\u2019s also believed that iron absorption can be<\/span> <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19087437\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">affected by calcium<\/span><\/a><span style=\"font-weight: 400;\">, so if you are taking both supplements, it\u2019s best to take them at different times of the day.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Certain antibiotics, thyroid disease medications, Parkinson\u2019s disease medications, and antacids can be affected by iron supplements; let your healthcare provider know if you\u2019re taking these.<\/span><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/www.singlecare.com\/prescription\/ferrous-sulfate\"><span style=\"font-weight: 400;\">Get iron supplement coupon<\/span><\/a><\/p>\n<h3 id=\"magnesium\">3. Combine magnesium with carbs<\/h3>\n<p><span style=\"font-weight: 400;\">Magnesium is necessary for your body\u2019s muscles and nerves to work properly. Common types of magnesium include oxide, citrate, <\/span><span style=\"font-weight: 400;\">l-threonate, glycinate, chloride, and aspartate.<\/span><span style=\"font-weight: 400;\"> The type of magnesium you opt for will depend on what you\u2019re using it for\u2014for example, magnesium citrate works best for muscle cramps; and l-threonate may improve sleep, anxiety, and migraines.<\/span><span style=\"font-weight: 400;\"> The type most providers prescribe is magnesium oxide. <\/span><span style=\"font-weight: 400;\">Magnesium is available in a variety of forms, including tablets, powders, and transdermal\u2014or skin-based varieties\u2014like oils and lotions.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Combining magnesium supplements with vitamin D, whether through supplements, sunshine, or vitamin D-rich foods, including cheese, eggs, or fortified grains, <\/span><a href=\"http:\/\/www.ncbi.nlm.nih.gov\/pubmed\/1992050\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">may help<\/span><\/a><span style=\"font-weight: 400;\"> magnesium bioavailability. Combining magnesium with <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/what-are-carbohydrates\/\"><span style=\"font-weight: 400;\">carbohydrates<\/span><\/a><span style=\"font-weight: 400;\"> like grains might help as well.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you\u2019re taking zinc supplements as well, it\u2019s best to not take them together with magnesium. <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/magnesium-supplements\/\"><span style=\"font-weight: 400;\">Magnesium can interact<\/span><\/a><span style=\"font-weight: 400;\"> with certain antibiotics, osteoporosis medications, and some thyroid and heart medications. Additionally, if you have kidney disease, you should check with your doctor before taking magnesium supplements.\u00a0<\/span><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/www.singlecare.com\/prescription\/magnesium\"><span style=\"font-weight: 400;\">Get magnesium coupon<\/span><\/a><\/p>\n<h3 id=\"turmeric\">4. Eat black pepper with turmeric<\/h3>\n<p><span style=\"font-weight: 400;\">Curcumin is the main ingredient in turmeric, a spice that has been used for thousands of years in Asian and Indian cultures for its <\/span><a href=\"https:\/\/www.singlecare.com\/blog\/turmeric-benefits\/\"><span style=\"font-weight: 400;\">healing properties<\/span><\/a><span style=\"font-weight: 400;\">. Turmeric supplements have grown in popularity, but their<\/span> <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC7144558\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">effectiveness is difficult to measure<\/span><\/a><span style=\"font-weight: 400;\"> because curcumin is unstable\u2014it changes into another substance easily\u2014and it\u2019s not well absorbed by the body when taken orally.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Piperine, one of the compounds in black pepper, can <\/span><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/9619120\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">improve absorption<\/span><\/a><span style=\"font-weight: 400;\"> of curcumin and turmeric bioavailability. You can either take a piperine supplement along with curcumin, or enjoy your turmeric-infused foods with a hearty dose of freshly cracked black pepper. Curcumin supplements or turmeric spice should also be combined meals that include fat, like avocado or olives, says<\/span> <a href=\"https:\/\/www.linkedin.com\/in\/jacob-hascalovici-md-phd-7763203a\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Jacob Hascalovici<\/span><\/a><span style=\"font-weight: 400;\">, MD, Ph.D., the co-founder and chief medical officer at <\/span><a href=\"https:\/\/www.clearing.com\/about\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Clearing<\/span><\/a><span style=\"font-weight: 400;\"> chronic pain care. (This is also true for fat-soluble vitamins, like vitamins A, D, E, and K.)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Turmeric may interact with certain medicines, such as blood thinners and antacids, so check with your provider before taking turmeric.\u00a0<\/span><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/www.singlecare.com\/prescription\/turmeric\"><span style=\"font-weight: 400;\">Get turmeric coupon<\/span><\/a><\/p>\n<h3 id=\"B12\">5. Ingest vitamin B12 in the morning<\/h3>\n<p><span style=\"font-weight: 400;\">This vitamin is important in creating red blood cells and is found naturally in animal foods. If you<\/span> <a href=\"https:\/\/ods.od.nih.gov\/factsheets\/VitaminB12-HealthProfessional\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">supplement B12,<\/span><\/a><span style=\"font-weight: 400;\"> your body will only absorb as much as it\u2019s missing, and anything excess will be excreted when you urinate. Most vitamin B12 supplements are made up of cyanocobalamin, a synthetic form of the vitamin. It\u2019s readily absorbed by the body and more inexpensive to manufacture.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B12 is a water-soluble vitamin, so taking it with water on an empty stomach will help B12 absorption. One positive side effect of vitamin B12 supplements for some people is a boost of energy, so taking it in the morning is best.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Taking B12 with vitamin C can reduce B12 bioavailability, so if you\u2019re taking both supplements, it\u2019s best to keep them a few hours apart.<\/span><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/www.singlecare.com\/prescription\/vitamin-b12\"><span style=\"font-weight: 400;\">Get B12 coupon<\/span><\/a><\/p>\n<h3 id=\"zinc\">6. Take zinc with protein<\/h3>\n<p><span style=\"font-weight: 400;\">A mineral crucial for much of the body\u2019s functions, like the immune system and blood clotting,<\/span> <a href=\"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/156482650102200204\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">zinc<\/span><\/a><span style=\"font-weight: 400;\"> is a common supplement. As a supplement, you can buy zinc as pills, lozenges, or as a dissolvable powder. Zinc sulfate is usually the cheapest, but it\u2019s the form least easily absorbed by your body and can lead to stomachaches. Good alternatives include zinc citrate or zinc glycinate.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Food can affect zinc bioavailability. Zinc is best taken with water or juice on an empty stomach, either one hour before or two hours after a meal, although if it upsets your stomach, it\u2019s okay to take it with food. Protein may <\/span><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/10801947\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">improve zinc absorption<\/span><\/a><span style=\"font-weight: 400;\">, but casein, a protein found in dairy products, may slightly inhibit absorption.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">High levels of zinc can<\/span> <a href=\"https:\/\/ods.od.nih.gov\/factsheets\/Zinc-HealthProfessional\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">inhibit copper absorption<\/span><\/a><span style=\"font-weight: 400;\">, so if you are taking a zinc supplement, you should consult with your provider about adding copper supplementation as well (or taking a zinc supplement that contains copper).<\/span> <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/11509108\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Iron<\/span><\/a><span style=\"font-weight: 400;\"> and calcium supplements should not be taken at the same time as zinc, as they can inhibit absorption. Zinc can also interact with certain antibiotics, blood pressure medications, nonsteroidal anti-inflammatory drugs (<\/span><a href=\"https:\/\/www.singlecare.com\/drug-classes\/nsaids\"><span style=\"font-weight: 400;\">NSAIDs<\/span><\/a><span style=\"font-weight: 400;\">), and diuretics.<\/span><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/www.singlecare.com\/prescription\/zinc\"><span style=\"font-weight: 400;\">Get zinc coupon<\/span><\/a><\/p>\n<h3 id=\"vitaminc\">7. Take vitamin C on an empty stomach<\/h3>\n<p><span style=\"font-weight: 400;\">Vitamin C is crucial for keeping cells healthy, maintaining and repairing body tissue, including skin and bones, and helping wounds heal. Most vitamin C supplements are composed of synthetic ascorbic acid, which has <\/span><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/8505665\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">similar bioavailability<\/span><\/a><span style=\"font-weight: 400;\"> to naturally occurring ascorbic acid found in foods like fresh oranges and cooked broccoli. Vitamin C also comes in a couple other forms: mineral ascorbate and time-released capsules.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vitamin C can\u2019t be stored in the body, so if you take in any more than you need, you will urinate the excess. As a water-soluble vitamin, it\u2019s recommended you take vitamin C with water and without food. But if you are sensitive to acids, taking it at mealtimes can help with any stomach side effects\u2014or you can try a buffered vitamin C, which is gentler on the stomach. Both natural and synthetic vitamin C seem to be <\/span><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24169506\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">equally bioavailable<\/span><\/a><span style=\"font-weight: 400;\">. Bioflavonoids can help you absorb vitamin C.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vitamin C can interact with <\/span><a href=\"https:\/\/www.mskcc.org\/cancer-care\/integrative-medicine\/herbs\/vitamin-c\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">radiation<\/span><\/a><span style=\"font-weight: 400;\"> or chemotherapy, so if you have cancer, consult your doctor before taking any vitamins or supplements. It can also interfere with estrogen levels if you are on hormonal contraception or hormone replacement therapy. Some other medications such as warfarin (blood thinner), statins (for cholesterol), and certain antiviral drugs can be affected. Those with kidney disease should also speak with a healthcare provider before taking vitamin C.\u00a0<\/span><\/p>\n<p><a class=\"cta-button\" href=\"https:\/\/www.singlecare.com\/prescription\/vitamin-c\"><span style=\"font-weight: 400;\">Get vitamin C coupon<\/span><\/a><\/p>\n<h2 id=\"supplements-worth-it\">The bottom line: Are supplements worth it?<\/h2>\n<p><span style=\"font-weight: 400;\">Before taking vitamins or supplements for deficiencies, you should consult your healthcare provider to see if it\u2019s necessary. Your physician can test you for most deficiencies or make sure that any symptoms you might have are actually from a deficiency and not something else.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Some groups of people really benefit from vitamin supplementation, like those who are pregnant, have restrictive diets (whether by choice or by medical necessity), or have limited exposure to sunshine. For most people, supplements aren\u2019t necessary and, if they are, should be considered a short-term solution for a bigger problem, says Dr. Hascalovici.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It\u2019s also important to disclose what you\u2019re taking in case any prescriptions are made less effective by your supplements. \u201cAs with many health habits, when it comes to vitamin and mineral absorption, it\u2019s good to be aware of the overall science, to practice balanced eating and exercise habits, as exercise can help boost levels of certain vitamins, like vitamin D, and to know your specific health-related goals so you can develop specific absorption strategies,\u201d Dr. Hascalovici says.\u00a0<\/span><\/p>\n<p><b>RELATED: <\/b><a href=\"https:\/\/www.singlecare.com\/blog\/vitamin-d-prescription\/\"><b>Why would I need a vitamin D prescription?<\/b><\/a><\/p>\n<p><span style=\"font-weight: 400;\">When taking vitamins, there are general rules that apply:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stick to the recommended dosage unless otherwise instructed by your provider.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid alcohol at the time you take your vitamins.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Take fat-soluble vitamins at a meal that includes some kind of dietary fat, like avocado or olive oil.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Take water-soluble vitamins on an empty stomach.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Keep a few hours between vitamins and that cup of coffee. Caffeine can affect supplement absorption.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid smoking at the same time as taking your vitamins. In fact, quitting smoking will likely do more for your health than any supplement could.\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Finally, keep in mind that the Food &amp; Drug Administration <\/span><a href=\"https:\/\/www.mskcc.org\/cancer-care\/integrative-medicine\/herbs\/vitamin-c\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">regulates supplements as food<\/span><\/a><span style=\"font-weight: 400;\">, not drugs. Meaning, they are not evaluated for safety and efficacy. Be wary of taking any supplements that sound too good to be true and get them vetted by a healthcare provider first.\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is bioavailability? | How are vitamins absorbed? | What affects vitamin absorption? | Calcium | Iron | Magnesium | Turmeric | Vitamin B12 | Zinc | Vitamin C | Are supplements worth it? Did you know that more than half of all Americans aged 20 and older take dietary supplements? In fact, 80% of [&hellip;]<\/p>\n","protected":false},"author":94,"featured_media":48455,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[11],"tags":[812],"coauthors":[8856],"class_list":["post-49118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wellness","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>How to absorb vitamins better<\/title>\n<meta name=\"description\" content=\"The form of supplement, food, other meds affect the bioavailability of vitamins. 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