528 researchers had received the award. A 1995 US lawsuit, in which Hegazy defended his patent, found that Pfizer's Procardia XL product was also based on his European patent No. 0047899, United States Patent 5264446. Society and culture Brand names In India, Nifedipine is manufactured by JB Chemicals, and comes in brands Nicardia Retard (Nifedipine 10 mg, 20 mg tablets) as well as Nicardia XL 30/60 which are Nifedipine Extended Release Tablets. In Switzerland, Nifedipine is sold only as a generic version of extended release formulation, under the names Nifedipin Mepha and Nifedipin Spirig. See also Cilnidipine Felodipine Lacidipine Nilvadipine Nimodipine References External links Antimineralocorticoids Bayer brands Calcium channel blockers Carboxylate esters Pfizer brands Dihydropyridines Glycine receptor antagonists Nitrobenzenes Wikipedia medicine articles ready to translate Tocolytics World Health Organization essential medicines