The leaves and flowers gave an- dromedotoxin which resembles tertiary amine veratrum alkaloids, particularly protoveratrine, in pharmacological action. Intravenous administration of andromedotoxin to dogs resulted in 20-40% reduction in blood pressure. It also closely resembles protoveratrine in its stimulating effect on the barostatic-pressor-reflex- mechanism, respiratory effects and emetic action. It produces reflex va- sodepressor responses in intact animals; in debuffered dogs, it produced vasopressor responses. It also produced, both direct and indirect, positive ionotropic effects, the latter being more pronounced.The leaves contain ursolic acid, alpha-amyrin, epi-friedelinol, cam- panulin and hyperoside. Chloroform extract of the leaves and shoots showed a depressant action. The honey from flowers is poisonous; contains an- dromedotoxin.... rhododendron barbatum
Habitat: Eastern Himalayas, extending into the Balipura tract and Aka hills of Assam at altitudes of 2,100-4,000 m.
Folk: Balu, Sanu, Chimal (Nepal).
Action: Plant—vasodepressor.
The plant contains a toxic principle, andromedotoxin. The leaves are reported to contain friedelin, epi- friedelinol, alpha-amyrin, campanulin, ursolic acid, triterpenes and quercetin.The flowers are reported to be poisonous.R.falconeri Hook. f., known as Ko- rlinga in Nepal, Kegu and Kalma in Bhutan, is found in the Himalayas from Nepal to Bhutan, Aka Hills, Naga Hills and Manipur at altitudes of 2,1004,300 m.The leaves and stem contain an- dromedotoxin; leaves also contain ur- solic acid, alpha-amyrin, friedelin, campanulin and quercetin. The flowers contain 3-rhamnoside and 3-galacto- side of quercetin. The bark gave taraxe- rol, betulinic acid and quercetin.Petroleum ether extract of the leaves and stems lowers blood pressure in cats and inhibits intestinal movements in rabbits.... rhododendron cinnabarinum
(MERS) a viral respiratory infection that was first identified in 2012. Humans seem to be infected most easily by contact with dromedary camels (hence the informal name camel flu), although human-to-human infection also occurs. Symptoms include fever, cough, and shortness of breath. Although the syndrome is often mild, death occurs in about a third of diagnosed cases. Most reported cases have been in the Arabian Peninsula, although there was a major outbreak in South Korea in 2015. At present there is no vaccine or treatment.... middle east respiratory syndrome
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