Drotin 40mg Injection is an antispasmodic medicine. It is used in the treatment of menstrual pain and abdominal pain. It provides relief from pain due to smooth muscle spasm like menstrual pain, pain due to kidney stones, pain due to biliary stone and gastrointestinal colicky pain. Drotin 40mg Injection is given as an injection under the medical supervision of a doctor. The dose and how often you take it depends on what you are taking it for. Your doctor will decide how much you need to improve your symptoms. You should take this medicine for as long as it is prescribed for you.The most common side effects of this medicine include nausea, vomiting, and dryness in the mouth. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. It may also make you feel dizzy as of low blood pressure if happens take caution while driving.Before taking this medicine, tell your doctor if you have ever had severe heart disease or have blood pressure issues, or you have liver or kidney disease. Your doctor should also know about all other medicines you are taking as many of these may make this medicine less effective or change the way it works. Your doctor may check blood pressure regularly while on treatment with this medicine.