Dosages (Red Root Sage) : 3–5 g crude herb (AKT); 3–15 g root in tea (HH2); 6–15 g dry root/day (APA); 5–15(-30) g root/day (FAY); extract of 60 g crude root/day 2–4 weeks to 9 months (FAY); 2–6 g dry root/day or 4–12 ml fluid extract (1:2) (KEB).
Contraindications, Interactions, and Side Effects (Red Root Sage) : Class 1 (AHP). Not covered (KOM). Tinctures may cause pruritus, reduced appetite, or stomachache (AHP). Dan Shen increases prothrombin time after warfarin; dangerous to take with coumadin (J. Emerg. Med. 18(1):22). Scarcely toxic (LAF).
Extracts (Red Root Sage) : Aqueous extract LD50 = 80,500 mg/kg ipr mus (HH2). (Kyeong- Man; 1999). Inhibition of mast cell degranulation by tanshinones from the roots of Salvia miltiorrhiza. (Planta Medica 65: 654–5; 1999). The author found that four diterpene tanshinones were involved in inhibiting beta-hexosaminidase (an enzyme released with histamine when mast cells are immunologically activated). He also confirmed the inhibition of mast cell degranulation of an allergen IgE response-evoked cell sample. Cells were treated with the tanshinones for only 10 minutes. 15,16-dihydrotanshinone had the greatest antiallergic activity, more so even than quercetin, but less so than clinically used pharmaceuticals such as azelastine and ketotifen. (Kyeong-Man, 1999).
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