Interaction Checker
Check interactions
Add your supplements, foods, meals — and any medications you take — to see how they interact. Findings are grouped by severity: what to avoid, what needs care or timing, and what actually works better together.
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Add more (1/12)
Caution
12 · Combine carefully — read the noteCaution
ValerianAnesthesia - stop before surgery
Valerian: Anesthesia - stop before surgery
Known interaction
Caution
Piperine (Black Pepper Extract)Increases absorption of many drugs - consult healthcare provider
Piperine (Black Pepper Extract): Increases absorption of many drugs - consult healthcare provider
Known interaction
Caution
Piperine (Black Pepper Extract)Phenytoin, propranolol, theophylline - potential interaction
Piperine (Black Pepper Extract): Phenytoin, propranolol, theophylline - potential interaction
Known interaction
Monitor / Timing
2 · Usually fine — mind timing or watch for effectsMonitor / Timing
MagnesiumCertain antibiotics / thyroid / bone drugs
Magnesium can bind these drugs and reduce their absorption.
Why: Cation chelation in the gut.
→ Separate magnesium from these medications by 2–4 hours.
Curated
Monitor / Timing
IronThyroid / certain antibiotics / Parkinson's drugs
Iron can bind these drugs and reduce their absorption.
Why: Cation chelation in the gut.
→ Separate iron from these medications by 2–4 hours.
Curated
Works well together
2 · Beneficial pairingNot medical advice. This tool surfaces well-established and known interactions from our reference data and curated rules. It is not exhaustive, can’t see your full health picture, and an absence of findings does not mean a combination is safe. Always consult a doctor or pharmacist about your supplements and medications.
