In that case, take your multivitamin with whichever meal contains the most fats and oils. Taking your multivitamin with a meal may also reduce stomach upset or nausea that can occur with these supplements. If you take separate supplements providing large amounts of vitamins or minerals, be aware that these can compete with the generally smaller amounts of similar nutrients in your multivitamin. For example, if you take a separate calcium supplement , take it at a different time of day than your multivitamin because the large amount of calcium will reduce absorption of minerals in your multivitamin, such as magnesium , iron , copper and zinc.
Similarly, if you take a separate supplement with vitamin D , A, E, or K, take it at a different time of day than your multivitamin because it may reduce absorption of other fat-soluble vitamins in your multivitamin. Taking small amounts of B12 twice daily is a good strategy to boost B levels if needed and may be better than taking a large dose once a day. So, take them at a different time of day than your multivitamin.
When choosing a multivitamin , it's generally best to go with one that provides up to the daily requirement of each nutrient. Many multivitamins provide much more than you need , and this can potentially have negative effects. Join today to unlock all member benefits including full access to all CL Answers and over 1, reviews. Join now at www. Why does my multivitamin make me nauseous? Is there anything that can help?
Find out if ingredients in multivitamins can cause nausea and gastrointestinal discomfort. Is there cause for concern with "gummy vitamins?
Are some better than others? I'm trying to pick a good multivitamin for my children and husband, and for myself. Any suggestions based on your research?
Have you evaluated a multivitamin by Vita Logic called Daily Extra? Information about the multivitamin Daily Extra from Vita Logic, including nutrient content. The maker of my multivitamin says it doesn't include folic acid because too much from supplements can be harmful.
Is that true? Which supplements are important after bariatric surgery i. Are there any I should avoid? Which vitamins and minerals should be taken together or separately?
Related Reviews 1 Multivitamin and Multimineral Supplements. First Name. Multivitamins are sold under many different brands, some as prescriptions. Many vitamins can cause serious or life-threatening side effects if taken in large doses. Do not take more of this medicine than directed on the label or prescribed by your doctor. Before you use multivitamins, tell your doctor about all your medical conditions and allergies.
Ask a doctor before using this medicine if you are pregnant or breastfeeding. Your dose needs may be different during pregnancy. Some vitamins and minerals can harm an unborn baby if taken in large doses. You may need to use a prenatal vitamin specially formulated for pregnant women. Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. When taken as directed, multivitamins are not expected to cause serious side effects.
Common side effects may include:. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. Avoid taking more than one multivitamin product at the same time unless your doctor tells you to. Taking similar vitamin products together can result in a vitamin overdose or serious side effects.
Avoid the regular use of salt substitutes in your diet if your multivitamin contains potassium. If you are on a low-salt diet, ask your doctor before taking a vitamin or mineral supplement. Do not take multivitamins with milk, other dairy products, calcium supplements, or antacids that contain calcium. Calcium may make it harder for your body to absorb certain ingredients of the multivitamin.
Use Multivitamins Oral, Sublingual exactly as directed on the label, or as prescribed by your doctor. When used in large doses, these supplements can affect every system in your body.
Potential side effects include joint, bone and muscle pain, eye irritation, frequent urination, irritability, fatigue, mood swings and changes in bowel habits, as reported by the U. National Library of Medicine.
You may also experience the following symptoms:. Except for niacin, water-soluble vitamins such as riboflavin and folic acid are unlikely to cause serious side effects because the excess is eliminated in the urine. Vitamin B3, or niacin, may produce a temporary sensation of heat that lasts up to eight hours, according to the U. Other nutrients, though, may have life-threatening side effects when consumed in excess. Calcium , for example, is essential for teeth and bone health.
It also plays a vital role in nerve and muscle function. However, large doses of calcium supplements may lead to kidney stones, constipation and poor absorption of iron and zinc.
Additionally, multivitamins containing calcium may interact with antibiotics, thyroid medications, anticonvulsants and other drugs. As the Mayo Clinic notes, elevated calcium levels in the blood can also affect the kidneys, bones, muscles, heart and brain. Irregular heartbeat, fatigue and excessive thirst are common side effects. Multivitamin supplements often contain zinc.
This mineral supports your natural defenses, contributes to protein synthesis and accelerates wound healing, among other functions. Too much of it can affect copper absorption, reduce good cholesterol levels and affect your immune system.
You may also experience nausea and vomiting, abdominal pain, diarrhea and other digestive symptoms. Another example is vitamin E , a fat-soluble nutrient with antioxidant effects.
When used in adequate doses, it keeps your immune system strong, protects against free radical damage, maintains the integrity of cell membranes and fights inflammation. However, it may increase the risk of bleeding when consumed in excess. When it comes to supplements, more isn't better.
Taking two multivitamins a day can affect your health in the long run; these products are not meant to replace a balanced diet.
If you're concerned about nutrient deficiencies, make sure your diet is in check before resorting to supplements. Stay on the safe side and consult your doctor in advance. Jill Corleone is a registered dietitian with more than 20 years of experience. Andra Picincu is a certified nutritionist and personal trainer with more than 10 years of experience.
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