Methandrostolone is a derivative of testosterone, exhibiting strong anabolic and moderate androgenic properties. Methandrostolone is a potent steroid, but also one which brings about noticeable side effects. For starters methandrostolone is quite estrogenic. Gynecomastia is often a concern during treatment, and may present itself quite early into a cycle (particularly when higher doses are used). At the same time water retention can become a pronounced problem, causing a notable loss of muscle definition as both subcutaneous water and fat build. The half-life of Methanez 50 is only about 3 to 4 hours, a relatively short time. This means that a single daily dosage schedule will produce a varying blood level, with ups and downs throughout the day.