Free tool
Herb Safety Checker
Screens herbs against medications, herb–herb combinations, pregnancy, nursing, pediatric use, surgery, organ-specific warnings, and pet species — in one tool. Data from AHP, ESCOP, Mills & Bone, Tisserand & Young, and peer-reviewed literature.
Focused
Focused safety checks
Pages tuned for specific questions — same engine, faster answer.
Check
Herbs & medications
Check against prescription and OTC drug interactions.
OpenCheckPregnancy safety
Which herbs are safe and which to avoid during pregnancy.
OpenCheckHerb × herb combinations
Screen multi-herb protocols for synergy vs. conflict.
OpenCheckCYP450 interactions
Herbs that induce or inhibit cytochrome P450 enzymes.
OpenCheckDogs — toxic herbs
Species-safe herbs for dogs, including MDR1 and breed sensitivities.
OpenCheckCats — toxic herbs
Cats lack key detox pathways — strict toxicity list.
OpenCheckBirds — toxic herbs
Bird-specific respiratory and systemic toxicity.
OpenCheckHorses — banned and toxic
FEI-banned substances + equine-specific herb safety.
Open