Alpinia (Cao Dou Kou) (Alpinia katsumadai) is a herb used in the Traditional Chinese Medicine tradition to help with Digestive Issues, Nausea, Gut Health, and Diarrhea. The aerial parts and leaves are the parts traditionally used, taken internally.
Steep 1–2 tsp of dried Alpinia (Cao Dou Kou) in freshly boiled water for 5–10 minutes.
Cover while steeping.
Strain and drink.
💧
Tincture
20–40 drops in water, 2–3× daily
Pack dried Alpinia (Cao Dou Kou) into a jar and cover with 40–60% alcohol.
Seal and steep for 4–6 weeks, shaking daily.
Strain and store in a dark dropper bottle.
💊
Powder / Capsule
500 mg – 1 g, 1–3× daily
Grind dried Alpinia (Cao Dou Kou) into a fine powder.
Fill size 00 capsules or stir into smoothies or honey.
Contraindications
Pregnancy & breastfeeding — insufficient safety data; consult your doctor
Children under 12 — therapeutic dosage not established
Warnings
⚠️ Pregnancy & Breastfeeding
Safety during pregnancy and breastfeeding has not been established for most herbal remedies. Consult your midwife or doctor before use.
⚠️ Allergic Reactions
Discontinue immediately if you experience rash, itching, swelling, or difficulty breathing.
⚠️ Not Medical Advice
This information is for educational purposes only. Always consult a qualified healthcare provider before using herbal remedies.
Where to find in nature
Native region
China, Taiwan, Korea, Japan
Climate
Temperate to subtropical
Habitat
Mountain forests, river valleys, and cultivated herb farms throughout East Asia
🌿 To see Alpinia (Cao Dou Kou) growing, visit botanical gardens, university plant collections, or specialist herb nurseries near you. If foraging in the wild, always work with an expert identifier — never consume a plant you are not 100% certain of.
Where to buy
In store
Chinese herbal medicine shops and TCM clinics
Chinatown herbal stores and Asian supermarkets with herbal sections
Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
Naturopathic clinics and integrative medicine practices
Specialist herbal apothecaries and herbalist practices
Online
iHerb
Wide selection of standardised extracts, capsules, and powders with lab testing
Large selection of certified organic bulk herbs and powders
Herb Pharm
High-quality liquid extracts and tinctures, rigorous quality standards
Amazon
Convenient — verify brand certifications and check third-party testing
Etsy
Small-batch artisan herbalists, hand-harvested and wildcrafted herbs
Quality tips
When buying Alpinia (Cao Dou Kou), look for: certified organic labelling, clearly stated country of origin, third-party lab testing for heavy metals and pesticides, and a batch expiry date. Standardised extracts offer consistent dosing; bulk dried herbs are more economical for regular use. Avoid very cheap, unlabelled products — quality varies enormously.
