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Guanfacine (brand name Tenex, and the extended release Intuniv) is a sympatholytic. It is a selective α2A receptor agonist. These receptors are concentrated heavily in the prefrontal cortex and the locus coeruleus, with the potential to improve attention abilities via modulating post-synaptic α2A receptors in the prefrontal cortex. Guanfacine lowers both systolic and diastolic blood pressure by activating the central nervous system α2A norepinephrine autoreceptors, which results in reduced peripheral sympathetic outflow and thus a reduction in peripheral sympathetic tone. Its side-effects are dose dependent, with practically no dryness of the mouth at doses of 2 mg and less
April 26, 2013
Shire has come to an agreement with drugmakers Actavis and Watson that lays to rest all pending litigation over their attempts to launch a generic form of the attention-deficit hyperactivity drug (ADHD) Intuniv (guanfacine hydrochloride) in the US.
Under the settlement, Shire has granted Actavis a license to make and market its version of Intuniv in the US from December 1 next year, in return for a 25% royalty on gross profit during the 180 day period of exclusivity.
read more at—–http://www.pharmatimes.com/Article/13-04-26/Shire_move_delays_Intuniv_generic_until_2014.aspx
DRUG APPROVALS BY DR ANTHONY MELVIN CRASTO
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