Supplement–drug interactions
Supplement–Drug Interactions, by Medication
Taking a prescription medicine? Find which supplements interact with it. NutriDex tracks 134 supplement–drug interactions across 28 medication groups, each graded avoid / caution / monitor and cited. Educational only — always check with your doctor or pharmacist.
- Blood thinners (warfarin, DOACs) 23
- Antiplatelet drugs (aspirin, clopidogrel) 17
- Sedatives (benzodiazepines, opioids, alcohol) 11
- Diabetes drugs (insulin, metformin) 10
- Blood-pressure drugs 7
- Hormone therapy / tamoxifen 7
- Chemotherapy / radiation 6
- MAOI antidepressants 5
- Immunosuppressants (transplant / autoimmune) 5
- CYP3A4 drugs (some statins, CCBs, immunosuppressants) 5
- Antidepressants (SSRIs / SNRIs) 4
- Statins (cholesterol drugs) 4
- Oral medications (general — separate dosing) 4
- Digoxin (heart medication) 3
- Thyroid medication (levothyroxine) 3
- Pregnancy 3
- Birth-control pills 2
- Liver-stressing drugs / alcohol 2
- Certain antibiotics (quinolones, tetracyclines) 2
- Thyroid medications (levothyroxine, antithyroid) 2
- Levodopa (Parkinson's) 2
- Triptans & tramadol 1
- HIV antiretrovirals 1
- Diuretics (water pills) 1
- ACE inhibitors / ARBs / K-sparing diuretics 1
- Oral retinoids (isotretinoin) 1
- Narrow-margin drugs (e.g. warfarin) 1
- Nitrates & ED drugs (PDE5 inhibitors) 1
Interactions also appear on each supplement's own page. Browse all 431 substances →