Windlas Biotech Ltd. Supplies Drotaverine Hydrochloride in Injection Form. Windlas Biotech Ltd. Has been accredited with WHO-GMP certification. Windlas Biotech Ltd. Manufactures and markets formulations under their own brands in the domestic market and exports these formulations to Asia, Africa & Latin America countries. The Drotaverine Hydrochloride in Injection Form is used for Gynaecological purposes. Each 2ml of the injection contains Drotaverine Hydrochloride 40mg; Absolute Alcohol IP 8% v/v; and Water for Injection IP q.S.