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Both products contained chlorpheniramine maleate (an antihistamine) and phenylpropanolamine hydrochloride (a decongestant) but differed in their doses. Both products contained 75 mg of phenylpropanolamine hydrochloride, but Cold Capsule IV contained 12 mg chlorpheniramine maleate while Cold Capsule V had 8 mg [1].
Chlorphenamine is the INN Tooltip International Nonproprietary Name while chlorpheniramine is the USAN Tooltip United States Adopted Name and former BAN Tooltip British Approved Name. Brand names include Chlor-Trimeton, Demazin, Allerest 12 Hour, Piriton, Chlorphen-12, Tylenol Cold/Allergy, and numerous others according to country. [2]
Phenylpropanolamine was first synthesized in the early 20th century, in or around 1910. [21] [11] It was patented as a mydriatic in 1913. [21] The pressor effects of phenylpropanolamine were characterized in the late 1920s and the 1930s. [21] Phenylpropanolamine was first introduced for medical use by the 1930s. [23] [11]
The halogenated alkylamine antihistamines all exhibit optical isomerism; brompheniramine products contain racemic brompheniramine maleate, whereas dexbrompheniramine (Drixoral) is the dextrorotary (right-handed) stereoisomer. [2] [8] Brompheniramine is an analog of chlorpheniramine. The only difference is that the chlorine atom in the benzene ...
Coricidin, Coricidin 'D' (decongestant), or Coricidin HBP (for high blood pressure), is the name of an over-the-counter cough and cold drug containing dextromethorphan (a cough suppressant) and chlorpheniramine maleate (an antihistamine). [1] Introduced by Schering-Plough in 1949 as one of the first antihistamines, it is now owned by Bayer.
Pheniramine (trade name Avil among others) is an antihistamine with anticholinergic properties used to treat allergic conditions such as hay fever or urticaria.It has relatively strong sedative effects, and may sometimes be used off-label as an over-the-counter sleeping pill in a similar manner to other sedating antihistamines such as diphenhydramine.