Japanese Hop — Safety & Interactions

Lü Cao · Herba Humuli Scandentis

Contraindications

  • Cold-Damp diarrhea or dysentery without Heat signs
  • Spleen-Stomach Deficiency Cold

Cautions

  • Standard dose 10–15g decoction; 30–60g fresh herb
  • Immunosuppressive activity documented in vitro and in vivo; caution in patients on immunosuppressive therapy (potential additive effect) or with known immunodeficiency
  • Not to be confused with Humulus lupulus (brewing hops) — different species with distinct phytochemistry

Drug Interactions

Drug Class / Substrate Mechanism Severity Source
Immunosuppressants: preclinical immunosuppressive activity via T-cell inhibition; potential additive effect with pharmaceutical immunosuppressants

This information is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before using herbal medicines, especially if you take prescription medications.