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Written by Navneet Kaur, M.Sc. Nutrition & Dietetics

Supplements

Supplements You Should Not Mix Together

Not all supplements go well together. Some combos block absorption or worsen side effects. Here’s what to avoid.

Introduction

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They compete for the same receptors for absorption, taking them together might lower absorption for both, so space them out.

Calcium and Iron 

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A bad combo, as tannins in tea reduce iron uptake, making it dangerous for women with low iron levels.

Iron and Green tea 

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Too much calcium and magnesium at once? They reduce each other’s absorption when taken in high doses together.

Calcium and Magnesium

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High doses of zinc can suppress copper absorption over time. It’s about balance and not overload.

Zinc and Copper

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Vitamin D won’t be activated in the body if your magnesium levels are low, so fix your deficiencies first and then supplement.

Vitamin D 

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Fish oil with blood thinners? It might increase the bleeding risk. Always consult your doctor before including these.

Fish Oils

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Fat Soluble Vitamins (A, D, E, K) accumulate over time, so doubling up via multivitamins and any other individual dose can be risky.

Fat-Soluble Vitamins

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Too many supplements can overload your liver and kidneys, more isn’t always better. Try to stick to food-first nutrition. Use supplements only to fill gaps, not as a shortcut.

Overdosing or Overloading

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For best results, supplement smart: research about combinations, space out doses, and prioritize whole foods first and then decide.

Conclusion

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