Unichem Lab has received Abbreviated New Drug Abbreviation (ANDA) approval from the US FDA for clonidine hydrochloride tablets. Clonidine Hydrochloride is a low dose potent and popular molecule in the antihypertensive category. Clonidine hydrochloride tablets USP 0.1mg, 0.2mg and 0.3mg are therapeutically equivalent to Catapres tablets USP 0.1mg, 0.2mg and 0.3mg from Boehringer Ingelheim. Clonidine hydrochloride formulations have annual sales of roughly $334 million in the US.