🩺 Supplement Interaction Checker

Check if your supplements are safe to take together. Instant results with scientific sources.

Selected Supplements
Click on supplements above to add them (max 6)

📋 Results

Frequently Asked Questions

Can I take Vitamin D and Calcium together?

Yes! Vitamin D and Calcium work synergistically. Vitamin D enhances calcium absorption by up to 30-40%, making them safe and beneficial to take together.

Should I take Iron and Calcium at the same time?

No. Calcium significantly reduces iron absorption by up to 60%. Take them at least 2 hours apart for optimal results.

What supplements should not be taken together?

Some combinations to avoid include: Iron with Calcium, high-dose Zinc with Copper, St. John's Wort with antidepressants, and Fish Oil with blood thinners.

Can I take multiple vitamins at once?

Most vitamins can be taken together, but some minerals compete for absorption. Use our tool above to check your specific combination.

Is it safe to take supplements with medications?

Some supplements can interact with medications. Always consult your doctor or pharmacist before combining supplements with prescription drugs.