Urex , also known as methenamine, is a urinary antiseptic used in the prevention of urinary tract infections.
This type of medication is taken orally in a tablet or liquid form, in dosages which are determined and prescribed by your doctor.
Common side effects associated with the use of Urex include upset stomach, diarrhea, vomiting, loss of appetite, skin rash and stomach cramps.
Some of the more severe side effects which may require immediate medical attention include hives, fainting and severe itching of the skin. If the side effects do not go away within a few days, contact your doctor for assistance.
Urex is occasionally prescribed for other purposes, as directed by your doctor.