National Drug Company Ltd. Total of 3 brands are available from this manufacturer National Drug Company Ltd.Brands Manufactured by National Drug Company Ltd.Nesvit B (Tablet) 20 mgNicotinamide + Pyridoxine Hydrochloride + Riboflavin + Vitamin B1National Drug Company Ltd.Nesvit B (Tablet) 2 mgNicotinamide + Pyridoxine Hydrochloride + Riboflavin + Vitamin B1National Drug Company Ltd.Nesvit B (Tablet) 5 mgNicotinamide + Pyridoxine Hydrochloride + Riboflavin + Vitamin B1National Drug Company Ltd.