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Velvet Digest

Can you take vitamins with medication?

Author

Emma Martin

Updated on April 07, 2026

Mixing Medications and Dietary Supplements Can Endanger Your Health. When you take prescription or over-the-counter (OTC) medications, do you take also a vitamin, mineral, or other dietary supplements? Consequently, combining dietary supplements and medications could have dangerous and even life-threatening effects.

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Also know, do multivitamins interact with other drugs?

Multivitamins can interact with certain medications, or affect how medications work in your body. Ask a doctor or pharmacist if it is safe for you to use multivitamins if you are also using: heart or blood pressure medications; a sulfa drug; or.

Likewise, what medications does vitamin D interfere with? Vitamin D Interactions

  • Corticosteroids, such as prednisone.
  • Weight-loss medicines, such as Alli (orlistat)
  • Diabetes medicines.
  • Blood pressure drugs.
  • Questran, LoCholest, or Prevalite (cholestyramine)
  • Seizure medicines, such as phenobarbital and Dilantin (phenytoin)
  • Calcium supplements.
  • Antacids.

Subsequently, question is, which vitamins should not be taken together?

5 Nutrients to Take – or Avoid Taking – Together for Best Absorption

  • Nutrient Absorption Guidelines.
  • Pair: Iron + Vitamin C.
  • Pair: Vitamin D + Calcium.
  • Pair: Vitamin B12 + Folate.
  • Pair: Vitamin D + Omega-3s.
  • Avoid: Iron + Calcium.

Can multivitamins make you tired?

Culprit: A Vitamin or Mineral Deficiency Having low levels of iron or vitamin D or B12 can make you feel tired, anxious, and weak, says Irene Park, a nurse practitioner in New York City. (Experts generally advise that healthy adults also supplement with 1,000 to 2,000 international units of vitamin D daily.)

Related Question Answers

What happens when you start taking multivitamins?

You might experience transient digestive upset when you first start out. It's very common to experience this side effect when you start a supplement regime and typically it happens when you take your vitamins on an empty stomach.

Are multivitamins worth taking?

Science tells us that taking most vitamins is worthless—but a few buck the trend. In the last few years, a number of studies published in the Annals of Internal Medicine underscored a fact that scientists have become increasingly sure of: The vast majority of vitamins and mineral supplements are simply not worth taking

Do multivitamins cause weight gain?

Vitamins and your metabolism By taking multivitamins, there's an increased chance that your body will have all the nutrients it needs to function properly. On the other hand, some people may blame multivitamins for weight gain or a lack of weight loss because they ignore the bigger picture of their overall lifestyle.

Is it OK to take multivitamins everyday?

There actually can be too much of a good thing, and anything in excess — whether vitamins, supplements or food — can cause serious problems. In terms of vitamins, some are fat-soluble, meaning they are stored in the liver, and you don't need them every day, while others are water-soluble, and need to be replenished.

Can I take a multivitamin and vitamin D?

No interactions were found between multivitamin and Vitamin D3. This does not necessarily mean no interactions exist. Always consult your healthcare provider.

What happens if you take 2 multivitamins in one day?

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. Multivitamins and minerals can cause serious or life-threatening side effects if taken in large doses.

Can I take vitamin C and multivitamins together?

Even if you don't have or aren't at risk for a vitamin C deficiency, taking an over-the-counter supplement or multivitamin that contains 500 to 1000 milligrams daily won't hurt you, Feinberg says, "as long as you are not taking a combination pill with massive amounts of fat soluble vitamins … which can cause toxicity."

Can I take all my vitamins at once?

Some vitamins are best taken after a meal, while it's best to take others on an empty stomach. Establishing a routine of taking a vitamin at the same time every day will form a healthy habit. It will also help you get the most out of your vitamin supplement. Not every vitamin breaks down in your body the same way.

What vitamins can you take too much of?

Potential risks of taking too many vitamins
  • Vitamin C. Although vitamin C has relatively low toxicity, high doses of it can cause gastrointestinal disturbances, including diarrhea, cramps, nausea, and vomiting.
  • Vitamin B3 (niacin).
  • Vitamin B6 (pyridoxine).
  • Vitamin B9 (folate).

Is it OK to take many vitamins at once?

You can definitely take too many Combining multiple supplements or taking higher-than-recommended doses can increase the risk that they can actually cause harm, says Kitchin. Taking high doses of vitamin C can lead to stomach cramping and diarrhea, for example.

Can you take too many vitamins at once?

Getting Too Much of Vitamins And Minerals. But routinely getting an overload of vitamins and minerals can hurt you. Too much vitamin C or zinc could cause nausea, diarrhea, and stomach cramps. Too much selenium could lead to hair loss, gastrointestinal upset, fatigue, and mild nerve damage.

Do vitamins really work?

No, Say Scientists. Popping vitamins and mineral supplements might feel virtuous, but it actually carries surprisingly few health benefits and could even do harm, according to researchers. Folic acid and B-vitamins were associated with a reduced risk of heart disease and stroke.

Are vitamins a waste of money?

"Not only are vitamin and mineral supplements a waste of money, they can in some instances actually harm the body," reports The Guardian. The review found that taking the most widely used supplements – multivitamins, vitamin D, vitamin C and calcium – had no significant effect on the risk of heart-related illnesses.

What is the difference between vitamin D and vitamin d3?

Vitamin D3 Comes from Animals, Vitamin D2 from Plants The two forms of vitamin D differ depending on their food sources. Vitamin D3 is only found in animal-sourced foods, whereas D2 mainly comes from plant sources and fortified foods. Since vitamin D2 is cheaper to produce, it's the most common form in fortified foods.

Can I take vitamin D and b12 together?

No interactions were found between Vitamin B12 and Vitamin D3. This does not necessarily mean no interactions exist. Always consult your healthcare provider.

Do vitamins break a fast?

Supplements may be used during fasting periods, although some may be better absorbed with food. Supplements that contain calories or sugar are more likely to break your fast.

Does Vitamin D give you energy?

Vitamin D proven to boost energy -- from within the cells A hormone normally produced in the skin using energy from sunlight, Vitamin D can also be found in a few foods - including fish, fish liver oils, egg yolks and fortified cereals but it can also be effectively boosted with Vitamin D supplements.

Can you take vitamin D with other meds?

Does vitamin D interact with other medications? Yes. Steroid medications such as prednisone can interfere with vitamin D metabolism. The seizure drugs Phenobarbital and Dilantin (phenytoin), affect vitamin D metabolism and affect calcium absorption.

What is the best time to take vitamin D?

What Is the Ideal Time to Take It? Taking vitamin D with a meal can enhance its absorption and increase blood levels more efficiently. However, there's limited research on whether taking it at night or in the morning may be more effective.