Salvia miltiorrhiza
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Salvia miltiorrhiza (Template:Zh), also known as red sage, redroot sage, Chinese sage, or danshen, is a perennial plant in the genus Salvia, highly valued for its roots in traditional Chinese medicine.[1] Native to China and Japan, it grows at Script error: No such module "convert". elevation, preferring grassy places in forests, hillsides, and along stream banks. The specific epithet miltiorrhiza means "red ochre root".
Chemical constituents
Chemical compounds isolated from Salvia miltiorrhiza include salvianolic acid (or salvianolic acid B),[2][3] dihydrotanshinone, miltirone,[4] tanshinone I, and tanshinone IIA.[5][6][7] Tanshinone IIA is one of the most abundant constituents of the root of Salvia miltiorrhiza.[5]
Description
S. miltiorrhiza is a deciduous perennial with branching stems that are Script error: No such module "convert". tall, with widely spaced leaves that are both simple and divided. The Script error: No such module "convert". inflorescences are covered with hairs and sticky glands. Flowers grow in whorls, with light purple to lavender blue corollas that are approximately Script error: No such module "convert". long, with a dark purple calyx. Salvia miltiorrhiza prefers well-drained soil, with about half a day of sunlight. It is hardy to approximately Script error: No such module "convert"..[8] Most Salvia seeds have a higher germination rate when exposed to light, though it is not required.[9]
Drug interactions
Danshen may potentiate the effects of the anticoagulation drug warfarin, possibly causing bleeding complications.[5][10][11] Other adverse effects may include allergic reactions, dizziness, headache, or gastrointestinal upset.[5]
Traditional Chinese medicine
Alone or combined with other Chinese herbal medicines, Salvia miltiorrhiza has been used in China and, to a lesser extent, in other countries as a treatment for various cardiovascular and cerebrovascular diseases.[5][10] A 2007 Cochrane review of the use of danshen for acute ischaemic stroke found that the quality of evidence was poor, and there was no evidence of benefit.[12] Similarly, a 2008 Cochrane meta-analysis found the clinical trials on danshen were low in quality, and were insufficient to make any judgment about its efficacy for people with heart attack.[13] Meta-analyses of oral and injectable forms of danshen in people with angina concluded that the effects of the treatment were inconclusive because the studies were low in quality and the conclusions were not based on strong evidence.[14]
References
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