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120mg of Stinging Nettle (root) taken three times a day (totalling 360mg) is associated with benefit in Benign Prostate Hyperplasia.
For allergies, the studied dosage is 300 mg twice a day of freeze-dried nettle leaf.
The evidence is much better for nettle root and prostatic enlargement than for nettle leaf and allergies. *
The following doses have been studied in scientific research:
ADULTS
BY MOUTH:
- For diabetes: 500 mg of stinging nettle leaf extract has been taken three times per day for 12 weeks. Also, 3.3 grams of stinging nettle leaf has been taken three times daily for 8 weeks. A combination product containing 200 mg of stinging nettle, 200 mg of milk thistle, and 200 mg of frankincense taken three times per day for 3 months has also been used.
- For osteoarthritis: 9 grams of crude stinging nettle leaf has been used daily. Also, an infusion containing 50 mg of stinging nettle leaf has been taken along with 50 mg of diclofenac daily for 14 days. A specific combination product (Rosaxan, medAgil Gesundheitsgesellschaft mbH) containing stinging nettle, rose hip, devil's claw, and vitamin D taken by mouth as 40 mL daily has been used for 12 weeks.
APPLIED TO THE SKIN:
- For osteoarthritis: Fresh stinging nettle leaf has been applied to painful joints for 30 seconds once per day for one week. Also a specific cream containing stinging nettle leaf extract (Liquid Phyto-Caps Nettle Leaf by Gaia Herbs) has been applied twice daily for 2 weeks. *
