Mesterolone, sold under the brand name Proviron among others, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low testosterone levels. It has also been used to treat male infertility, although this use is controversial. It is taken by mouth.
Proviron is used to replace testosterone in men with hypogonadism. Male hypogonadism is a condition when the body does not produce enough testosterone. Testosterone is a natural male hormone, known as an androgen, which controls normal sexual development in men. Testosterone is essential for the development and maintenance of the male reproductive organs as well as other male characteristics, such as hair growth, deep voice, sexual drive, muscle mass and body fat distribution. Proviron is for use in male patients only
Side effects of proviron
Tell your pharmacist as soon as possible if you do not feel well while you are taking Proviron. All medicines can have side effects. Sometimes they are serious, most of the time they are not. You may need medical attention if you get some of the side effects. Do not be alarmed by the following lists of possible side effects. You may not experience any of them. Ask your doctor or pharmacist to answer any questions you may have. Tell your doctor or pharmacist if you notice any of the following and they worry you:
- fluid retention
- breast enlargement
- increased sexual drive
- psychiatric disturbances such as depression, aggression, increased or decreased energy levels, elation or irritability
- excessive hairiness
- premature puberty
- stunted growth
Tell your doctor immediately, or go to Accident and Emergency department at your nearest hospital if you notice any of the following:
- symptoms of an enlarged prostate such as changes in urination, or blood in the urine or ejaculate
- unwanted, frequent or prolonged and painful erections
- severe stomach pain or tenderness which do not disappear within a short time
You may need urgent medical attention or hospitalisation. Hormonal substances such as Proviron may quicken the growth of existing hormone dependent tissues and tumours If you are over 65 years of age, you may have an increased risk of developing prostatic hyperplasia (enlargement of the prostate) and prostatic cancer.