Efficacy of Stachys Officinalis
In laboratory studies, extracts of Stachys chrysanthemum and Stachys candida have been shown to inhibit leukotriene C4, selectively inhibit TX-synthase enzyme, inhibit histamine release, and inhibit the secretion of tumor necrosis factor alpha and interleukin Investigators evaluated the anti-inflammatory activities of aqueous extracts of the aerial parts of ten Hungarian Stachys species using a standard model of inflammation – carrageenan-induced edema in the rat’s paw. In this model, carrageenan injection causes acute inflammation, leading to a peak increase in paw thickness within 4 hours. Aqueous extracts of S. officinalis, when administered orally, inhibited edema by 26.6%, compared to the 41.0% inhibition shown in the positive control, diclofenac sodium. Other investigators evaluated the anti-inflammatory activities of an acetone and methanol extract of the aerial parts of Stachys byzanthina C. Koch using the same standard model of inflammation. In particular, the acetone extract inhibited carrageenan-induced edema in the rat paw in a dose-dependent fashion over the dose range 50-200 mg/kg (P