Quick summary

Cnidium monnieri is a traditional Chinese medicinal herb containing bioactive compounds such as osthole. It has been used historically for various health purposes, including potential anticoccidial effects, enhancement of sexual function, and treatment of skin conditions. Current clinical evidence supporting its efficacy in humans is limited and mainly derived from combination herbal formulas or preclinical studies. Few randomized controlled trials have directly evaluated the isolated herb. Safety and adverse effects data are sparse, with no well-established contraindications or drug interaction profiles from clinical trials.

What is it

Cnidium monnieri is a plant used in traditional Chinese medicine. Known for its diverse bioactive compounds, it is employed in various herbal remedies and is commonly included in multi-herb formulations.

Traditional uses

  • Support for sexual function, particularly erectile dysfunction
  • Treatment of skin conditions such as atopic dermatitis
  • Potential anticoccidial effects in poultry (traditional veterinary use)
  • Bone health support in traditional contexts

Active compounds

The herb contains several bioactive constituents, with osthole being the most studied. Osthole is a coumarin derivative thought to contribute to many of the herb’s purported effects.

Potential benefits with evidence levels

  • Potential adjunctive treatment for erectile dysfunction (Moderate evidence): A meta-analysis of compound Xuanju capsules containing Cnidium monnieri combined with phosphodiesterase-5 inhibitors reported improved International Index of Erectile Function scores, clinical effectiveness, penile blood flow, and serum testosterone levels in patients without increased adverse events. However, further high-quality randomized controlled trials are needed to confirm these findings (Li et al., 2025).
  • Anticoccidial effect in poultry (Preclinical animal study): In broiler chickens infected with Eimeria tenella, aqueous extract of Cnidium monnieri showed moderate anticoccidial effects comparable to diclazuril, reducing intestinal damage and modulating cytokine balance and immune responses (Wang et al., 2026).
  • Bone health effects (Preclinical animal study): Osthole from Cnidium monnieri increased bone mineral density and improved bone parameters in osteoporotic rats, based on a meta-analysis of animal studies (Wu et al., 2022).
  • Possible anti-atopic dermatitis effects (Insufficient clinical evidence): Chinese herbal formulas containing Cnidium species have been studied for atopic dermatitis with some reported clinical benefits, but isolated effects of Cnidium monnieri need further research (Guo et al., 2022).

Side effects

Available human studies with compounds containing Cnidium monnieri have not reported significant safety concerns or increased adverse events. Mild transient effects such as vaginal burning have been rarely reported in topical multi-herb preparations containing Cnidium species. No severe adverse events directly attributed to Cnidium monnieri have been documented.

Drug interactions

No direct evidence exists regarding drug interactions of Cnidium monnieri or its isolated compounds. Caution is advised when combining with erectile dysfunction pharmacotherapies until more data become available.

Who should avoid it

  • Pregnant or breastfeeding individuals, due to lack of safety data.
  • Those using erectile dysfunction medications should exercise caution until interaction studies are available.
  • Individuals with known allergies to similar herbs or compounds should consult a healthcare provider before use.

Evidence limitations

  • Most clinical trials involve compound herbal formulas, limiting attribution of effects solely to Cnidium monnieri.
  • Preclinical evidence predominates; human clinical evidence is sparse and generally low to moderate quality.
  • Human safety and drug interaction data are limited.
  • No large multicenter randomized controlled trials of isolated Cnidium monnieri or its pure compounds have been conducted.
  • Studies vary in methodology and quality, often relying on traditional use or in vitro and animal models.

References

  • Li R, Liao M, Yu Y, et al. Compound Xuanju capsules combined with phosphodiesterase-5 inhibitors as a new strategy for erectile dysfunction: a meta-analysis and trial sequential analysis. Europe PMC. 2025. PMID: 40642011
  • Wang Y, Han H, Zhang Q, et al. Inhibitory effect of Cnidium monnieri aqueous extract on Eimeria tenella infection in chicks. Europe PMC. 2026. PMID: 41475173
  • Wu B, Zhu XF, Yang XQ, Wang WY, Lu JH. Effects of osthole on osteoporotic rats: a systematic review and meta-analysis. Europe PMC. 2022. PMID: 35980123
  • Guo Z, Li Y, Hou Y, et al. Chinese herbal bath therapy for the treatment of Atopic dermatitis in children: A meta-analysis and systematic review. Europe PMC. 2022. PMID: 36451483
  • Pei L, Bao Y, Liu S, Zheng J, Chen X. Material basis of Chinese herbal formulas explored by combining pharmacokinetics with network pharmacology. Europe PMC. 2013. PMID: 23468985

Last reviewed

June 2024

Disclaimer: This information is provided for educational purposes only and is not intended as medical advice. The efficacy and safety of Cnidium monnieri for various uses have not been fully established. Consult a healthcare professional before using this herb, especially if you are pregnant, breastfeeding, have existing health conditions, or are taking other medications.