Supplement Interaction Checker
Check 2 supplements and 1 medication for known interactions — instantly, free, no account needed.
Your supplements
Add up to 2 for free.
Your medications
Optional — matched by drug class.
Your full stack deserves a full check.
ManCore logs your entire supplement and medication list and re-checks it automatically every time you add something new — no re-entering everything each time.
Track my stack — freeHow supplement interactions work
Supplements can interact with each other and with medications — some combinations are complementary, some just need spacing out (like zinc and iron), and a few should be avoided entirely (like L-arginine with nitrates). This checker matches your stack against a rule set of documented interactions; read more in our supplements guide.
| Rating | What it means |
|---|---|
| Safe | No known adverse interaction — often complementary. |
| Caution | Usually fine, but space doses apart or watch for a specific effect. |
| Avoid | A documented risk — don't combine without medical guidance. |
When to Talk to Your Doctor or Pharmacist
Always confirm before starting anything new if you take prescription medication, especially blood thinners, ED medication, or blood pressure medication. Talk to your doctor or pharmacist immediately if you notice unusual bleeding, dizziness, or a sudden drop in blood pressure after combining a supplement with a medication.
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Medical Disclaimer
This tool is an educational aid, not a medical diagnosis. Nothing here constitutes medical advice, and it is not a substitute for professional medical advice from a qualified healthcare provider. Always consult your physician or urologist about your own symptoms and results.
Read our full medical disclaimer or meet our editorial process.