Antispasmodics / Antimuscarinics are used for Medicine for Smooth Muscle Contraction. Inga Laboratories Pvt. Ltd. Manufactures Antispasmodics / Antimuscarinics Medicine. Inga Laboratories Pvt. Ltd. Also manufactures a wide range of medicines with different functions. Antispasmodics / Antimuscarinics Medicine is available in Injection form. Each ampoule contains Hyoscine Butyl Bromide I.P. 20mg/ml. It is offered in 10 X1ml packs.