Vasotop 30mg Infusion is a medicine used to treat and prevent further damage to the brain after subarachnoid hemorrhage (bleeding around the brain). It is known as a calcium channel blocker and helps to improve blood flow to the brain and prevents changes in brain function. Vasotop 30mg Infusion is given under the supervision of a doctor. The dose depends on what you are taking it for and the severity of your condition. Keep taking the injection for as long as advised by your doctor. Follow your doctor’s advice while taking this medicine. The most common side effects include rash, headache, stomach discomfort, low blood pressure, and slow heartbeat. Consult your doctor If any of these bother you, or get worse, or won't go away. It makes you feel dizzy. Avoid driving, or any kind of machinery work until you know how the medicine affects you. Before taking it, let your doctor know if you have any heart-related problems. Pregnant or breastfeeding women should also consult their doctor for advice before taking this medicine. You also need to tell your doctor what other medicines you are taking – especially those used to treat high blood pressure or heart conditions.