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Solid promethazine hydrochloride is a white to faint-yellow, practically odorless, crystalline powder. Slow oxidation may occur upon prolonged exposure to air, usually causing blue discoloration. Its hydrochloride salt is freely soluble in water and somewhat soluble in alcohol. Promethazine is a chiral compound, occurring as a mixture of ...
In the UK, Actavis marketed promethazine hydrochloride under the Sominex name. [41] It was available at least as early as 1985 as an OTC hypnotic. [42] Actavis also marketed a product by the name of Sominex Herbal, an herbal sleep aid with three natural active ingredients: hops, valerian, and passion flower extracts. [43]
In 1947, it synthesized promethazine, a phenothiazine derivative, which was found to have more pronounced sedative and antihistaminic effects than earlier drugs. [ 59 ] : 77 A year later, the French surgeon Pierre Huguenard used promethazine together with pethidine as part of a cocktail to induce relaxation and indifference in surgical patients.
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Codeine is also available in conjunction with the anti-nausea medication promethazine in the form of a syrup. Brand named as Phenergan with Codeine or in generic form as promethazine with Codeine, it began to be mixed with soft drinks in the 1990s as a recreational drug, called 'syrup', 'lean', or ' purple drank '. [ 63 ]
Ingredients for creating lean, including codeine-promethazine cough syrup, Jolly Rancher candies, and Sprite. Note the label on the bottled syrup, printed with instructions on how to prepare the lean. Some of the syrup has been decanted into a plastic container. A spoonful of promethazine/ codeine syrup showing the characteristic purple color
Propiomazine, also known as 10-(2-dimethylaminopropyl)-2-propionylphenothiazine or as propionylpromethazine, is a phenothiazine derivative [4] and is structurally related to promethazine. The compound is provided medically as the hydrochloride and maleate salts. [6] [4] [7]
Today, Triprolidine is used less frequently and has been replaced in popular medications by other antihistamines like Diphenhydramine, Promethazine, Chlorpheniramine, as well as second generation antihistamines like Loratadine and Fexofenadine. Triprolidine remains an ingredient in the cold medicine Actifed in many territories.