12 supplements that you should never take together, say medical experts

They can cancel each other, or even cause serious interactions.


If you suffer from a Vitamins deficiency , a diet and various supplements can help your body get back on the right track. However, before starting any new diet, it is important to realize that everything you put in your body can have negative effects. The risk of reaction is even higher if you take more than one supplement at a time, or if you associate your supplements with over -the -counter medicines (OTC) or prescribed.

"As we know, there are many supplements that are synergistic when combined with regard to those that can actually increase side effects, or increase or decrease absorption," Azza Halim , MD, a certified anesthesiologist who also specializes in anti-aging and regenerative medicine, says Better life . She adds that you may always be able to couple these supplements with the approval and monitoring of your doctor, but that you should eliminate them at least a few hours to avoid interaction.

Your best bet for safety is to ask your doctor or a pharmacist to revise your supplements proposed diet Before You begin. However, the following pairs of supplements generally raise red flags and are considered to be better avoided.

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1
Calcium and iron

woman looking at supplement bottle
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One of the most common reasons why the supplements could make a bad agreement is if they cancel. Trista Best , MPH, RD, a dietitian recorded in Balance an supplements , says that calcium and iron are a perfect example of how you can undermine the advantages of supplements by combining bad things.

"You will want to avoid taking your iron supplement with a calcium supplement or a food source," said Best. "These two vitamins compete for absorption and calcium will reduce the amount of iron that your body is able to absorb, if applicable."

To maximize the absorption by your body of an iron supplement, it is best recommends to combine it with vitamin C.

"Non -hematic iron comes from plant sources and it is not absorbed as easily as the forms of the heme, but the addition of vitamin C can increase the absorption of iron. This can be done simply by adding the Lemon to your water or by eating strawberries with your supplement diet, "She says.

2
Zinc and copper

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Many people promote zinc and copper supplements to stimulate their immune system. However, certified nutritionist Jenny Dobrynina Said that taking them at the same time will produce ineffective results.

"The combination of copper and zinc is not recommended because they compete for absorption in the body. So take them together reduces their effectiveness," she said Better life.

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3
Vitamin C and vitamin B-12

A senior man looking at a supplement bottle while standing near a window
Shutterstock / Piksestock

Dobrynina also warns against taking vitamin C and Vitamin B-12 At the same time: "I recommend taking these two supplements at least two hours apart."

According to Mayo clinic , taking the two supplements simultaneously can lead to a reduction in vitamin B-12 levels in the body. A deficiency in B-12 can cause anemia, or a reduction in healthy red blood cells, ultimately causing fatigue, shortness of breath, balance problems, memory disorders, etc.

4
Vitamin E and vitamin K

Customer in pharmacy holding medicine bottle. Woman reading the label text about medical information or side effects in drug store. Patient shopping pills for migraine or flu. Vitamin or zinc tablets.
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Then Dobrynina warns against taking vitamin E and vitamin K at a time, because they can have opposite effects on coagulation.

"Studies show that vitamin E supplementation has an increase in bleeding in some people. Doctors generally prescribe vitamin K supplements to help blood clotting. So take vitamin E simultaneously with vitamin K can counter effects Vitamin K, "she explains. AE0FCC31AE342FD3A1346EBB1F342FCB

A 2023 Case study published in the Journal of Medical Case Reports Corrobore that high doses of vitamin E "inhibit the synthesis of the coagulation factor derived from vitamin K, which can cause serious bleeding events such as gastrointestinal bleeding and intracranial hemorrhage".

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5
Fish oil and Biloba Ginkgo

Fish oil capsules with omega 3 and vitamin D in a glass bottle on wooden texture, healthy diet concept,close up shot.
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Jacek Szymanowski , certified nutrition clarification nutritionist and health coach , says that the combination of fish oil and ginkgo biloba can also affect the ability of your blood to coagulate safely.

"The combination can increase the risk of bleeding due to their bloody friendship effects. The two supplements have anticoagulant properties, which can increase in synergy the risk of bleeding, especially in high doses or with other anticoagulants" , he explains.

6
Folic acid (vitamin B9) and vitamin B-12

Woman shopping for multivitamins at pharmacy store
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If you take folic acid and vitamin B-12 together, it is another match that you may want to reassess with the help of your doctor. Dobrynina warns that "excessive consumption of vitamin B9 and B-12 (folic acid and folate) can hide the symptoms of vitamin B-12 deficiency."

Studies have indicated that in rare cases, this could cause neurological damage. "There is a risk that if folic acid is given to people who have an unsocied deficiency in vitamin B12 cause neurological damage "Said a study published in the Cochrane database of systematic journals .

"Vitamin B12 deficiency produces both an anemia identical to that of folate deficiency but also causes irreversible damage to central and peripheral nervous systems." Researchers write.

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Best Life offers the most up -to -date information for high -level experts, new research and health agencies, but our content is not supposed to replace professional advice. Regarding the medication you take or any other health issue you have, always consult your health care provider directly.


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