Acrivastine is a triprolidine analog antihistamine indicated for the treatment of allergies and hay fever. As an H1 receptor antagonist, it functions by blocking the action of histamine at this receptor thereby preventing the symptoms associated with histami…

Cathine, also known as d-norpseudoephedrine and (+)-norpseudoephedrine, is a psychoactive drug with stimulant properties. It belongs to the phenethylamine and amphetamine chemical classes. In the United States, it is classified as a Schedule IV controlled sub…

Ephedrine was first described in western literature in 1888, as a naturally occurring component of the ephedra plant, along with [pseudoephedrine].[A193698] Ephedrine acts as both a direct and indirect sympathomimetic. It is an alpha- and beta-adrenergic rece…

Pseudoephedrine is structurally related to [ephedrine] but exerts a weaker effect on the sympathetic nervous system.[A188820,A188823] Both drugs naturally occur in in ephedra plant which have a history of use in traditional Eastern medicine and were first res…