Virolone Tablet 10's is used to treat hypogonadism, androgen deficiency, and male infertility. It contains Mesterolone which works by supplementing male hormone (testosterone) produced by the body. In some cases, this medicine may cause side effects such as itching, fever, rash, hives, abdominal pain, indigestion, nausea, and vomiting. Inform the doctor if you are taking any other medication, or have any pre-existing medical conditions.