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fiber and minerals

Fiber can reduce mineral absorption

What's happening

High fiber intake, especially from supplements, can reduce absorption of zinc, iron, calcium, and magnesium.

Recommendation

Take mineral supplements separately from fiber.

Timing

Separate by 2 hours

Sources

  • Journal of Nutrition

Frequently Asked Questions

Can I take fiber and minerals together?

Fiber can reduce mineral absorption. Take mineral supplements separately from fiber.

How should I time fiber and minerals?

Separate by 2 hours

Is this interaction dangerous?

This interaction is rated “Caution” by Formulate. High fiber intake, especially from supplements, can reduce absorption of zinc, iron, calcium, and magnesium.

Want to check your whole stack?

The free checker lets you add any combination of supplements and medications at once. Formulate's desktop app goes further — every stack change surfaces interaction alerts automatically.

Medical disclaimer. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.