Vitamin Supplements That Shouldn't Be Taken Together 

Discover combinations of vitamins and supplements that can interfere with each other's absorption or effectiveness.

Calcium and Iron

Taking calcium and iron supplements simultaneously can hinder iron absorption, especially non-heme iron found in plant-based foods. It's advisable to take iron on an empty stomach or with vitamin C, and calcium at a different time.

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Calcium and Magnesium

Calcium and magnesium compete for absorption in the intestines. Consuming them together may reduce the absorption efficiency of both minerals. Consider taking magnesium before bed and calcium earlier in the day.

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Zinc and Copper

High doses of zinc can interfere with copper absorption, potentially leading to copper deficiency. If supplementing with zinc, ensure a balanced intake of copper, typically in a 10:1 zinc-to-copper ratio.

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 Iron and Green Tea or Coffee

Consuming iron supplements alongside green tea or coffee can inhibit iron absorption due to compounds in these beverages. It's best to take iron supplements separately from such drinks.

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Vitamin D, E,  and K

Taking vitamins D, E, and K together may affect the absorption of vitamin K. It's recommended to space out the intake of these fat-soluble vitamins to ensure optimal absorption.

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Vitamin C and Copper

High doses of vitamin C can interfere with copper absorption, potentially leading to deficiency. Monitor your intake and consult with a healthcare provider if supplementing both.

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