Chinese Magnoliavine Fruit — Safety & Interactions
Wu Wei Zi · Fructus Schisandrae
Use with caution. Practitioner review recommended before use.
Contraindications
- Active exterior pathogen when venting and release are still required
- Acute excess Lung heat or acute damp-heat diarrhea
- Marked phlegm-fluid retention that should first be dispersed rather than constrained
Cautions
- The fruit's sour and collecting nature can aggravate acid reflux, gastric sensitivity, or severe peptic-ulcer patterns in susceptible patients
- Pregnancy and breastfeeding use should be practitioner-directed because formal human safety data are limited and the herb has meaningful CYP and transporter effects
- Northern and southern Wu Wei Zi are not interchangeable in all clinical contexts because their lignan profiles differ
- Schisandra can reduce certain liver-enzyme lab values, which may matter when interpreting follow-up testing
Drug Interactions
| Drug Class / Substrate | Mechanism | Severity | Source |
|---|---|---|---|
| CYP1A2, 3A4, and 3A5 substrates | Schisandra lignans can inhibit these CYP enzymes, while long-term use may also induce CYP3A4 and alter substrate exposure | Moderate | Memorial Sloan Kettering |
| P-glycoprotein substrates | May inhibit P-gp activity and interfere with the metabolism and transport of susceptible drugs | Moderate | Memorial Sloan Kettering |
| Tacrolimus | Coadministration increased blood levels of tacrolimus via effects on P-gp and CYP3A-mediated metabolism | Major | Memorial Sloan Kettering |
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.