What happens if you take two one a day vitamins?

How often should I take a multivitamin?

To get enough nutrients, I recommend taking a multivitamin every day, in case you have missed out on a little bit of one mineral or the other. Choose a multivitamin without added iron, and one that has less than 2,500 international units (IUs) of vitamin A and beta-carotene (combined).
In fact, you should really take your vitamins (or your multivitamin) twice a day (several vitamins are water soluble and you will urinate them out so quickly that you need them twice a day to have a minimally acceptable level in your blood at all times if you do not eat a lot of fruit and vegetables at both breakfast and dinner. Further, for some such as Calcium, you cannot absorb more than 600 milligrams (mg) at a time, so you need that twice a day and for others such as vitamin C, if you take more than 500 mg at once, that increase your risk of toxicity. So to keep a steady level, to absorb the optimal level, and to minimize the risk of toxicity from too much at once, you want a twice a day multivitamin).

Multivitamins: The Case For Taking One A Day

Ideally, we’d all eat super healthful diets. But that’s not the world we live in, and multivitamins may help bridge the nutritional gaps. Jasper White/Getty Images hide caption

toggle caption Jasper White/Getty Images

Ideally, we’d all eat super healthful diets. But that’s not the world we live in, and multivitamins may help bridge the nutritional gaps.

Jasper White/Getty Images

In an ideal world, we’d all be eating copious amounts of nutrient-dense foods such as fruits and vegetables — and getting all the essential vitamins and nutrients our bodies need for optimal health.

But, as a nation, we’re far from that healthful eating ideal.

According to the Centers for Disease Control and Prevention, Americans, on average, only eat about one fruit and one or two vegetables on a typical day. This helps explain why millions of people fall short of the recommended intakes of some vitamins and minerals.

For instance, more than 1 in 3 children and teens (ages 9 to 18) don’t meet recommended intakes for calcium and vitamin D, according to a study in The Journal of Pediatrics.

So, how might people with less-than-stellar diets plug the gaps of good nutrition?

Fortification efforts, such as the Food and Drug Administration’s requirement that folic acid be added to many cereals and breads, have paid off. As this CDC infographic points out, folate levels in women increased by 50 percent between 1993 and 2006. This is critical, since folate helps prevent birth defects.

Another option? Taking a daily multivitamin with minerals may be helpful.

A study published in the American Journal of Clinical Nutrition found that supplements helped adults meet the recommended intake of certain minerals, such as calcium and magnesium in men and women, as well as iron for women.

Another study found that in children and teenagers (ages 9 to 18), “taking supplements added nutrients (for example, magnesium, phosphorus, and vitamins A, C, and E) for which intakes would have been inadequate from food alone,” according to study author Regan Bailey of the National Institutes of Health.

So, given the case that vitamins may be a good way to avoid nutritional inadequacies, why do they get a bad rap?

About a year ago, as we reported, the U.S. Preventive Services Task Force concluded that there was insufficient evidence to recommend for or against the use of multivitamins for prevention of cancer and heart disease.

Some medical experts have also weighed in, concluding that vitamins and supplements are a waste of money. Researchers also point to evidence that taking more than the recommended levels can be harmful.

As our colleagues at Shots have pointed out, studies have found that multivitamins show no benefit in preventing early death.

What’s more, one of the largest studies ever conducted to evaluate multivitamin use, the Physicians’ Health Study II, determined that, at least in men, taking a multivitamin did not reduce the risk of death from heart disease.

But the evidence is decidedly mixed. For instance, that same study found a small reduction in cancers and cataracts associated with multivitamin use.

And just this month, a study published in the Journal of Nutrition found that women who took a multivitamin with minerals for three years or longer had a lower risk of death from heart disease. Interestingly, the benefit was not seen in men.

So when it comes to preventing serious diseases, the jury is still out on whether taking multivitamin supplements may be beneficial.

But when it comes to plugging nutritional gaps in our diet, some researchers say a multivitamin is a good bet. Jeffrey Blumberg, a senior nutrition scientist at Tufts University, is among them.

“I’m not saying it’s an excuse not to eat healthy,” Blumberg told us. But given how many people aren’t eating well, “it’s a very prudent thing for many people to choose to take a multivitamin” he says.

Risks and side effects of dietary supplements

Like drugs, dietary supplements have risks and side effects. But sellers aren’t required to do research studies in people to prove that a dietary supplement is safe. And unlike drugs, dietary supplements are mostly self-prescribed with no input from informed medical sources like doctors, nurses, or pharmacists.

There’s a lot of wrong information out there. Even for those who are usually well informed, it can be hard to find reliable information about the safe use and potential risks of dietary supplements.

As part of its function to monitor supplement safety, the US Food and Drug Administration (FDA) tracks reports of illness, injury, or reactions from supplements. And supplement makers are required to report serious harmful effects to the FDA. Early numbers are reported on the FDA website. Recent FDA information shows that the number of reports has continued to climb each calendar year:

    2010: 1,009 reports of dietary supplement adverse events

    2011: 2,047 reports of dietary supplement adverse events

    2012: 2,844 reports of dietary supplement adverse events

Exposures to supplements (such as vitamins, herbs, protein powders, and botanicals) accounted for more than 100,000 calls to US poison control centers in 2013. Of these calls, more than 8,000 people were reportedly treated in health care facilities. More than 1000 cases were reported to poison control centers as having moderate to severe outcomes. This did not include electrolyte and mineral supplements, which accounted for another 2,500 people treated in health facilities, with 350 moderate to severe reactions and 2 deaths reported to poison control centers.

Most people who suffer unexpected side effects, illnesses, or drug interactions from dietary supplements don’t call a poison control center or the supplement manufacturer. This means that the numbers we have are likely very low estimates of actual events.

Used properly, certain dietary supplements may help reduce the risk of some diseases, reduce discomfort caused by certain drugs or conditions, or simply make you feel better (improve your quality of life). And most people can use dietary supplements safely within certain dosage guidelines. But taking dietary supplements can be risky, especially for people who are getting cancer treatment.

Special problems for people getting cancer treatment

There are several ways that supplements can cause problems for people during cancer treatment. For example, some dietary supplements can cause skin sensitivity and severe reactions when taken during radiation treatment. People who are getting radiation treatments should talk to their doctors before taking any supplement.

People getting chemotherapy may be at higher risk for drug interactions if they take dietary supplements. There is also concern that antioxidants might interfere with cancer cell-killing treatments. Cancer experts often recommend that patients avoid dietary supplements altogether until their cancer treatment is over. But if you decide to take supplements anyway, be sure to let your doctor know exactly what you are taking.

One Daily Multivitamin with Iron (folic acid) oral


This medication is a multivitamin and iron product used to treat or prevent vitamin deficiency due to poor diet, certain illnesses, or during pregnancy. Vitamins and iron are important building blocks of the body and help keep you in good health.

how to use

Take this medication by mouth, usually once daily or as directed. Follow all directions on the product package, or take as directed by your doctor. Do not take more than the recommended dosage. If you are uncertain about any of the information, consult your doctor or pharmacist.This medication is best taken on an empty stomach 1 hour before or 2 hours after meals. Take with a full glass of water (8 ounces or 240 milliliters) unless your doctor directs you otherwise. If stomach upset occurs, you may take this medication with food. Avoid taking antacids, dairy products, tea, or coffee within 2 hours before or after this medication because they may decrease its effectiveness. Do not lie down for at least 10 minutes after taking the tablets or capsules. Consult your doctor or pharmacist for details for your particular brand.If you are taking the delayed-release form or extended-release capsules, swallow them whole. Do not crush or chew delayed-release or extended-release products. Doing so can release all of the drug at once, increasing the risk of side effects and decreasing absorption. Also, do not split extended-release tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing.Take this medication regularly in order to get the most benefit from it. To help you remember, take it at the same time each day.

side effects

Constipation, diarrhea, or upset stomach may occur. These effects are usually temporary and may disappear as your body adjusts to this medication. If any of these effects persist or worsen, contact your doctor or pharmacist promptly.Iron may cause your stools to turn black, an effect that is not harmful.If your doctor has prescribed this drug, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.In Canada – Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.


Before taking this product, tell your doctor or pharmacist if you are allergic to any of its ingredients; or if you have any other allergies. This product may contain inactive ingredients (such as soy found in some brands), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.This medication should not be used if you have certain medical conditions. Before using this medication, consult your doctor or pharmacist if you have: iron overload disorder (e.g., hemochromatosis, hemosiderosis).Before taking this medication, tell your doctor or pharmacist your medical history, especially of: use/abuse of alcohol, liver problems, stomach/intestinal problems (e.g., ulcer, colitis).If your brand of multivitamin also contains folic acid, be sure to tell your doctor or pharmacist if you have vitamin B12 deficiency (pernicious anemia) before taking it. Folic acid may affect certain laboratory tests for vitamin B12 deficiency without treating this anemia. Untreated vitamin B12 deficiency may result in serious nerve problems (e.g., peripheral neuropathy). Consult your doctor or pharmacist for details.Tell your doctor if you are pregnant before using this medication.This medication passes into breast milk. Consult your doctor before breast-feeding.

drug interactions

See also How To Use section.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.Some products that may interact with this drug are: chloramphenicol, methyldopa, other vitamin/nutritional supplements.This product can decrease the absorption of other drugs such as bisphosphonates (for example, alendronate), levodopa, penicillamine, quinolone antibiotics (for example, ciprofloxacin, levofloxacin), thyroid medications (for example, levothyroxine), and tetracycline antibiotics (for example, doxycycline, minocycline). Therefore, separate your doses of these medications as far as possible from your doses of this product. Ask your doctor or pharmacist about how long you should wait between doses and for help finding a dosing schedule that will work with all your medications.If your brand of multivitamin also contains folic acid, be sure to tell your doctor or pharmacist if you take certain anti-seizure drugs (e.g., hydantoins such as phenytoin).This medication may interfere with certain lab tests, possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug.


If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: stomach pain, nausea, vomiting, diarrhea.


If your doctor has prescribed this medication, do not share it with others.Keep all regular medical and laboratory appointments.Some brands may also contain ingredients such as docusate. Ask your doctor or pharmacist if you have questions about the ingredients in your brand.This product is not a substitute for a proper diet. Remember that it is best to get your vitamins and minerals from healthy foods. Maintain a well-balanced diet and follow any dietary guidelines as directed by your doctor.

In June, at this year’s European College of Sport Science conference in Barcelona, Mari Carmen Gomez-Cabrera, a physiologist at the University of Valencia and one of the world’s leading experts on antioxidants, was debating the merits of supplements with two top researchers. For more than 90 minutes they went back and forth, parsing the accumulated evidence in front of a packed auditorium. Finally, Gomez-Cabrera landed on a provocative question that summarized her position.

The debate, she explained, isn’t whether supplements are good or bad for athletes. Rather, it’s “are they useless, or are they worse than useless

The question may come as a shock to the more than half of Americans who take some sort of dietary supplement—a vast catch-all term that includes everything from vitamins and minerals to herbal remedies to exotic performance boosters like deer-antler spray and glutamine. It’s no surprise that the purported muscle-building supplements make unproven claims and may come with hazardous side effects. But in the past few years, Gomez-Cabrera and a growing number of researchers have come to believe that even respectable mainstream supplements like vitamins C and E suffer from the same basic flaw: few apparent benefits and increasing evidence of negative effects. For example, in July’s issue of the Journal of Physiology, researchers discovered that resveratrol, an antioxidant in red wine, actually limited the positive effects of cardiovascular exercise—like an increased VO2 max—when taken daily in high concentrations. In July, scientists at the Fred Hutchinson Cancer Research Center found that men with high levels of the omega-3 fatty acid DHA in their blood, often from fish-oil supplements, had a significantly greater risk of prostate cancer.

According to Pieter Cohen, a professor at Harvard Medical School, there are really only two types of sports supplements: those that are safe but don’t work, and those that might work but have side effects, especially at higher than normal levels. “If any supplement, no matter how beneficial, has a pharmaceutical effect, it’s also got a downside,” he says. “There’s no way to get around that basic principle.”

Most supplements stay firmly in the first category. Taking a daily multivitamin, Cohen emphasizes, won’t harm you, but it usually won’t help either, which is why major health organizations like the American Heart Association and the American College of Sports Medicine don’t recommend supplements to healthy people.

It’s not that vitamins and minerals aren’t important. If you don’t get enough vitamin C, you can get scurvy; without enough iron, you can become anemic; and if you live far enough north to see Russia from your backyard, you may need some extra vitamin D. But all three of these substances have also been linked to negative effects at high doses. Same goes for prolonged use of other common supplements like vitamin E and calcium. In short, unless tests have shown that you’re low in a particular vitamin or mineral, there’s no evidence to suggest that you should take a daily supplement.

That rule also applies if you’re an athlete who takes supplements because, say, you assume your training requires an anti-oxidant boost to speed recovery. Gomez-Cabrera and her colleagues at the University of Valencia have shown that antioxidant supplements suppress the oxidative stress that signals your body to adapt and get stronger. The result: regular use of something seemingly innocuous like vitamin C can actually block gains in endurance-boosting mitochondria.

The balance between risk and return also works in subtler ways, as Wen-Bin Chiou, a psychologist at National Sun Yatsen University in Taiwan, has shown in a series of experiments on a phenomenon called the licensing effect. As part of a battery of tests, subjects were asked to take a pill; half were told the pill was a multivitamin, while the other half were told it was a placebo. In truth, they were all placebos.

In subsequent tests, the subjects who thought they’d taken a vitamin consistently behaved in less healthy ways. When asked to try out a pedometer, they were more likely to choose a shorter walking route; at lunch, they chose less healthy food. In follow-up studies, Chiou has also discovered that smokers who think they’ve been given a vitamin smoke more, and people who are given a weight-loss supplement are less likely to stick to their diet. The same thing happens when you go to the gym or eat a plate of spinach. The difference is that exercise and vegetables have real benefits, so you’ve still got a chance to come out ahead. If you take a pill with no benefits, the best you can do is break even.

Which brings us back to Gomez-Cabrera in Barcelona. She, of all people, has enormous respect for the powers of micronutrients like antioxidants—she has devoted her life to studying them. “But if you eat enough fruits and vegetables, five servings a day,” she says, “I don’t think you need anything else.” And if you’re not eating like that, then taking a pill isn’t a solution. In fact, it may be part of the problem.

Supplements: The Good and the Bad

(Photo: Nomad Soul)

There’s scant evidence for the effectiveness of most supplements. But here are a few to consider—and a few to shy away from.

The Good

  • Antioxidants: Regular use can interfere with training adaptations, but a regimen lasting no more than a week can help your body cope with added stress like recovering from a race or a trip to altitude.
  • Caffeine: The most versatile and powerful performance enhancer out there, boosting both brain and muscle function.
  • Creatine: The one (legal) weight-room powder that does result in muscle-mass gains.
  • Vitamin D: Good diet alone often won’t meet your D needs. Get tested to confirm a deficiency, then consider adding up to 600 IUs per day.

The Bad

  • Calcium: It’s an effective way to strengthen bones, but in high doses it may also harden arteries. Get your fill through dietary sources like yogurt and broccoli.
  • Vitamins A, C, and E: Taken over extended periods and at high doses, beta-carotene and vitamins A, C, and E have all been linked to increased cancer risk and higher death rates, and they may get in the way of exercise adaptations.
  • Workout boosters: If a product claims to increase energy or enhance muscle growth, it’s almost certainly misleading you or contains an unlabeled stimulant or steroid.

From Outside Magazine, Nov 2013 Filed To: WellnessHealth and Beauty Lead Photo: Hannah McCaughey

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Yes, it is possible to overdose on some vitamin or mineral supplements, and taking too much of certain ones (too much iron or vitmain A, for example) on a daily basis can lead to health problems. We have seen patients at the Arizona Center clinic who come in with shopping bags full of supplements. When asked why they are taking a particular product, they often say they don’t know, or they heard it advertised on the radio, or a friend is taking it.

You should be aware of the following vitamin and mineral supplements which can be harmful when taken in excessive amounts:

  • Iron: Never take iron supplements unless advised to do so by a physician after tests have revealed iron deficiency anemia, and the source of blood loss has been identified. Iron is one of the few minerals we cannot eliminate (except through blood loss), and accumulations in the body can quickly rise to toxic levels. Iron is an oxidizing agent that can increase the risk of cancer and heart disease. Avoid multivitamin/multimineral products that contain iron unless you are a premenopausal woman with heavy menstrual flow.
  • Vitamin A: Excessive, chronic intake of some forms of this fat soluble vitamin, specifically retinol or retinoic acid, can be toxic. They can build up in the body leading to hair loss, confusion, liver damage and bone loss. In the Arctic, native people have long known to discard polar bear livers because eating them can lead to hypervitaminosis A, a potentially fatal illness due to the high levels of retinol these organs contain. Symptoms include drowsiness, sluggishness, irritability, severe headache, bone pain, blurred vision and vomiting. Most gruesome is the peeling off of body skin, even on the bottom of the feet. Severe cases can end in liver damage, hemorrhage, coma and death. Instead of retinol or retinoic acid, use plant-derived vitamin A precursors such as beta-carotene (in addition to other mixed carotenoids).
  • Vitamin E: Taking very high doses of this powerful, fat-soluble antioxidant may interfere with the body’s ability to clot blood, posing a risk to people taking prescribed blood thinners or aspirin. If you’re on these drugs, take vitamin E supplements only under physician supervision.
  • B Vitamins: Unlike fat soluble vitamins, the water-soluble B’s do not accumulate in the body. However, getting too much of some of them can still cause problems. Vitamin B6 in excess can damage nerves, although that is unlikely in doses lower than 300 mg per day. Taking a total of 2,000 to 3,000 mg per day of niacin (vitamin B3) to lower cholesterol can cause reversible nausea, jaundice and elevated liver enzymes, a toxic picture mimicking hepatitis. Avoid time-released forms and high doses of niacin, especially if you’re pregnant, have ulcers, gout, diabetes, gallbladder disease, liver disease or have had a recent heart attack. Anyone taking niacin to lower cholesterol should only do so under the supervision of a physician and should have liver function tests done before the start of therapy and periodically thereafter.

Andrew Weil, M.D.

Multivitamins and minerals

Medically reviewed by Drugs.com on Aug 23, 2019 – Written by Cerner Multum

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What is multivitamins and minerals?

multivitamins and minerals is a combination of many different vitamins and minerals that are normally found in foods and other natural sources.

Multivitamins and minerals are used to provide substances that are not taken in through the diet. Multivitamins and minerals are also used to treat vitamin or mineral deficiencies caused by illness, pregnancy, poor nutrition, digestive disorders, certain medications, and many other conditions.

Multivitamins and minerals may also be used for purposes not listed in this medication guide.

Never take more than the recommended dose of multivitamins and minerals.

An overdose of vitamins A, D, E, or K can cause serious or life-threatening side effects if taken in large doses. Certain minerals may also cause serious overdose symptoms if you take too much.

Do not take this medication with milk, other dairy products, calcium supplements, or antacids that contain calcium.

Multivitamins and minerals can cause serious or life-threatening side effects if taken in large doses. Do not take more of multivitamins and minerals than directed on the label or prescribed by your doctor.

Ask a doctor or pharmacist if it is safe for you to use multivitamins and minerals if you have other medical conditions or 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 be harmful if taken in large doses. You may need to use a specially formulated prenatal vitamin.

How should I take multivitamins and minerals?

Use exactly as directed on the label, or as prescribed by your doctor.

Never take more than the recommended dose of multivitamins and minerals.

Read the label of any vitamin and mineral product you take to make sure you are aware of what it contains.

Take this medicine with a full glass of water. Avoid milk or other dairy products.

You must chew the chewable tablet before you swallow it.

Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

Dissolve the effervescent tablet in at least 4 ounces of water. Stir and drink this mixture right away.

Swallow a capsule or tablet whole and do not crush, chew, or break it.

Use multivitamins and minerals regularly to get the most benefit.

Store at room temperature away from moisture and heat. Keep the liquid medicine from freezing.

Store this medicine in its original container. Storing multivitamins in a glass container can ruin the medication.

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of vitamins A, D, E, or K can cause serious or life-threatening side effects if taken in large doses. Certain minerals may also cause serious overdose symptoms if you take too much.

Overdose symptoms may include increased thirst or urination, severe stomach pain, vomiting, bloody diarrhea, black and tarry stools, hair loss, peeling skin, tingly feeling in or around your mouth, changes in menstrual periods, weight loss, severe headache, severe back pain, blood in your urine, pale skin, easy bruising or bleeding, severe drowsiness, slow heart rate, shallow breathing, weak and rapid pulse, confusion, muscle weakness, cold and clammy skin, blue lips, and seizure (convulsions).

What should I avoid while taking multivitamins and minerals?

Avoid taking more than one multivitamin product at the same time unless your doctor tells you to. Taking similar products together can result in an overdose or serious side effects.

Avoid the use of salt substitutes in your diet if your multivitamin and mineral contains potassium. If you are on a low-salt diet, ask your doctor before taking a vitamin or mineral supplement.

Do not take multivitamins and minerals with milk, other dairy products, calcium supplements, or antacids that contain calcium. Calcium may make it harder for your body to absorb certain minerals.

Multivitamins and minerals side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Minerals (especially taken in large doses) can cause side effects such as tooth staining, increased urination, stomach bleeding, uneven heart rate, confusion, and muscle weakness or limp feeling.

When taken as directed, multivitamins and minerals are not expected to cause serious side effects. Common side effects may include:

  • upset stomach;

  • headache; or

  • unusual or unpleasant taste in your mouth.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Multivitamins and minerals dosing information

Usual Adult Dose for Vitamin/Mineral Supplementation:

Antioxidant Multiple Vitamins (A,D,E,K-intensive) and Minerals oral capsule:
2 capsules orally once daily.
Calcium, Magnesium and Phosphorus oral tablet:
2 tablets orally 3 times per day.
Calcium with Vitamin D and K oral tablet:
1 tablet orally twice daily.
Multiple Vitamins with Zinc oral capsule:
2 capsules orally once daily.
Therapeutic Multiple Vitamins with Minerals oral tablet, chewable:
1 tablet chewed daily with food.
Vitamin B Complex with C and Calcium oral tablet:
3 tablets orally daily preferably after a meal.
Vitamin B Complex with C, Folic Acid, Iron and Zinc oral tablet:
1 tablet orally once daily.
Vitamin B Complex with D, Calcium and Folic Acid oral wafer:
1 wafer chewed twice daily.
Vitamin B Complex with Folic Acid and Minerals oral tablet:
1 to 2 tablets orally once or twice daily.

Usual Pediatric Dose for Vitamin/Mineral Supplementation:

Antioxidant Multiple Vitamins (A,D,E,K-intensive) and Minerals oral capsule:
4 to 10 years: 1 capsule orally once daily.
11 years or older: 2 capsules orally once daily.
Antioxidant Multiple Vitamins and Minerals oral liquid and
Antioxidant Multiple Vitamins (A,D,E,K-intensive) and Minerals oral liquid:
1 year or less: 1 mL orally once a day.
1 to 3 years: 2 mL orally once a day.
Multiple Vitamins with Zinc oral capsule:
4 to 10 years: 1 capsule orally once daily.
11 years or older: 2 capsules orally once daily.
Vitamin B Complex with Folic Acid and Minerals oral tablet:
6 years or older: 1 to 2 tablets orally once or twice daily.

What other drugs will affect multivitamins and minerals?

Vitamin and mineral supplements can interact with certain medications, or affect how medications work in your body. Ask a doctor or pharmacist before using multivitamins and minerals with any other medications, especially:

This list is not complete. Other drugs may affect multivitamins and minerals, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

More about multivitamin with minerals

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  • Drug class: vitamin and mineral combinations
  • Calcium Carbonate/Vit D/Vit B6/Vit B12/Folic Acid with Minerals Chew Wafers
  • Calcium/Magnesium/Vitamin D
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What happens when you take too much vitamin C?

Less commonly, people may experience severe side effects from taking too much vitamin C. Long term intake above the recommended levels increases the risk of these negative effects.

Possible health risks of taking too much vitamin C include:

Kidney stones

Share on PinterestKidney stones are a possible consequence of too much vitamin C supplementation.

Doctors believe that too much vitamin C supplementation could result in a person excreting the compounds oxalate and uric acid in their urine. These compounds could lead to kidney stone formation.

The authors of a case study in the journal Kidney Internationalreported that a woman developed kidney stones after taking 4 g or more of vitamin C each day for 4 months.

However, researchers have not conducted any larger scale studies on vitamin C intake and kidney stone formation. They do know that people who have a history of kidney stones are more likely to form them if they take large amounts of vitamin C, according to the ODS.

Nutrient imbalances

Another concern regarding excessive vitamin C intake is that it can impair the body’s ability to process other nutrients.

For example, vitamin C may reduce the levels of vitamin B-12 and copper in the body.

The presence of vitamin C can also enhance iron absorption in the body, which could lead to excessively high levels.

Cause bone spurs

According to the Arthritis Foundation, one study found that the presence of very high vitamin C levels in the body increased the likelihood of a person developing painful bone spurs.

However, the Foundation also cited a research study that found that people with low levels of vitamin C had a higher risk of developing rheumatoid arthritis, a painful inflammatory joint condition.

These findings emphasize the need for appropriate vitamin C supplementation that provides neither too much nor too little.

Impair the effectiveness of niacin-simvastatin

Evidence suggests that taking vitamin C supplements may impair the body’s ability to increase high density lipoprotein (HDL) cholesterol in people taking the combination drug niacin-simvastatin. This drug combines the vitamin niacin with the statin simvastatin (Zocor), and people take it to treat high cholesterol.

Doctors consider HDL cholesterol the “good” cholesterol because it reduces the amount of harmful cholesterol in the blood.

If a person takes vitamin C supplements and niacin-simvastatin, they should talk to their doctor about ways to make each more effective. Doctors do not know whether vitamin C also affects the ability of other medicines similar to Zocor.

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