Frenin 10mg Injection is used to treat hypotension (low blood pressure) which occurs during anesthesia or due to any medicine. It helps to maintain normal level of blood pressure. Frenin 10mg Injection is given under the supervision of healthcare professionals. You should not self-administer this medicine at home. The dose and duration depends on the seriousness of your condition. You should have your injections at the same time each day to get the most benefit and you should keep on taking this medicine for as long as you are prescribed it, even if your symptoms quickly improve. If you stop taking it too early the infection may return or worsen. Common side effects of this medicine include nausea and vomiting, and headache. Consult with your doctor if any of these side effects persist and do not go away with time. Before taking this medicine, you should let your doctor know of all the other medicines you are taking, have any heart, liver, or kidney disease. Pregnant or breastfeeding mothers should consult their doctor before using this medicine.