Cnidium
The warming herb used externally for itching and internally for impotence.
Also known as: Cnidium monnieri • She Chuang Zi
Overview
Cnidium, or She Chuang Zi, is a pungent, warming herb in TCM with a primary affinity for the skin and the Kidneys. Externally, it is a powerful anti-pruritic used in washes and creams for eczema, rashes, and fungal infections. Internally, it is used to warm the Kidneys and fortify Yang, treating impotence, infertility, and cold sensations in the lower body.
Key Benefits
Dermatological Issues
Its primary external use is to dry dampness and kill parasites, making it very effective as a wash for eczema, ringworm, scabies, and general itching.
Male Sexual Health
Internally, it warms Kidney Yang and is used to treat impotence and increase libido. Its active ingredient, osthole, is researched for its effects on nitric oxide production.
Female Health
It can be used for female infertility due to a 'cold womb' and as a wash for trichomonas vaginitis.
Anti-Fungal Properties
Both traditional use and modern research confirm its ability to inhibit various fungal strains.
Dosage & How to Take
For internal use, 3-9 grams in a decoction. For external use, 15-30 grams are boiled in water to create a wash or compress.
| Purpose | Dose | Notes |
|---|---|---|
| External Wash for Itching | 15-30g in 1 liter of water | Boil for 15 minutes, let cool, and apply to the affected area. |
| Impotence/Yang Tonic | 6-9g per day in formula | Often combined with other Kidney Yang tonics. |
Best Time to Take
Internal formulas are taken daily. External washes are used as needed.
With or Without Food
Internal use is best between meals.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Dried Fruit | Good | Decoctions and external washes | The raw, dried seeds are the standard form. |
| Extract (Osthole) | High | Male enhancement supplements | Standardized extracts for osthole are common in sexual health products. |
Side Effects & Safety
Common
- Generally safe. Its warming and drying nature can cause thirst or irritation if used improperly.
Rare
- None reported at standard doses.
Contraindications
- Contraindicated for internal use in cases of Yin deficiency with heat signs. Should not be used on open, weeping skin lesions.
Interactions
Osthole may have a similar mechanism of action; combining them could increase effects and side effects.
Scientific Research
Osthole: A Review of Its Pharmacological Activities
Osthole, the main active constituent of Cnidium monnieri, possesses a wide range of effects, including neuroprotective, cardiovascular protective, and aphrodisiac properties, primarily through nitric oxide pathways.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.