
Epimedium brevicornum
Also known as yín yáng huò.
Used in TCM to tonify kidney yang and nourish kidneys for over 2000 years Icariin acts as PDE5 inhibitor boosting NO/cGMP for ED Phytoestrogenic effects Chinese Pharmacopoeia lists E. brevicornum as source of Epimedii Folium

Ask Herbert about Horny Goat Weed. Herbert is the master herbalist inside Bountiful Herbs: he answers from this plate and eleven hundred others, with dosing, pairing and cautions. Your first ten questions are free.
Ask HerbertPregnancy: Pregnancy Caution
Breastfeeding: Lactation (source flag notSafeInLactation)
The record lists 7 contraindications; open the plate in the library to read them in full.
| Preparation | As written | Metric |
|---|---|---|
| Decoction: 5 g dried leaf in 250 ml water simmered 10-15 min, 3 times daily | 5000 mg | |
| Extract capsules: 250-500 mg daily | 250-500 mg | |
| Icariin extract: up to 6 months safe | ||
| Phytoestrogen extract: up to 2 years safe |
Doses are reproduced from the sources for practitioners and are not a recommendation for any person.
Clinical Notes. Used in TCM to tonify kidney yang and nourish kidneys for over 2000 years Icariin acts as PDE5 inhibitor boosting NO/cGMP for ED Phytoestrogenic effects Chinese Pharmacopoeia lists E. brevicornum as source of Epimedii Folium
indications. Horny Goat Weed is traditionally indicated for: Joint pain, Postmenopausal bone loss, Heart disease, Fatigue, Ejaculation problems, Menopausal symptoms, Kidney yang deficiency, HIV/AIDS, Memory loss, Osteoporosis, Erectile dysfunction, Liver disease, High blood pressure, Bronchitis, Sexual dysfunction, and 8 further conditions.
dose-reference. Reference preparation/dosing for Horny Goat Weed: Decoction: 5 g dried leaf in 250 ml water simmered 10-15 min, 3 times daily; Extract capsules: 250-500 mg daily; Icariin extract: up to 6 months safe; Phytoestrogen extract: up to 2 years safe
safety-cautions. Horny Goat Weed - Contraindications: Bleeding disorders, Hormone-sensitive cancers and conditions (breast cancer, uterine cancer), Surgery (stop 2 weeks prior), CYP1A2, CYP2B6, CYP3A4 substrates | Side effects: Severe breathing problems (high/long-term doses), Nausea, Dry mouth, Nosebleed, Thirst, Vomiting, Spasms | Safety flags: not considered safe in pregnancy; not considered safe during lactation.

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