Valerian (herb) particular binding site. Hydrophilic extractions of the herb commonly sold over the counter, however, probably do not contain significant amounts of isovaltrate. Valerenic acid in valerian stimulates serotonin receptors as a partial agonist, including 5-HT which is implicated in the sleep-wake cycle. The chief constituent of valerian is a yellowish-green to brownish-yellow oil present in the dried root, varying in content from 0.5 to 2.0%. This variation in quantity may be determined by location; a dry, stony soil yields a root richer in oil than moist, fertile soil. The volatile oils that form the active ingredient are pungent, somewhat reminiscent
Valerian Stan liberă, 3 septembrie 1997, editorial by Petre Mihai Băcanu „Dreptatea e un risc?”; România liberă, 11 septembrie 1997, Gabriela Adameşteanu, „Valerian Stan la Porţile Orientului”; Curentul, 11 ianuarie 2000, Ştefan Augustin Doinaş, „Morala politicii şi politica moralei” </ref> Valerian Stan Valerian Stan (born 1955 in Sascut, Bacău County, Romania) is a publicist, civil and human rights activist, dignitary, lawyer and military officer. Some biographical data: In 1977, Valerian Stan graduated the Military School of active infantry officers "Nicolae Balcescu" from Sibiu. At graduation I received the rank of lieutenant and was assigned to a military unit in Bucharest. For nearly