Mesterolone is a synthetic, orally effective androgen which does not have any anabolic characteristics. Mesterolone is used in school medicine to case or cure disturbances caused by a deficiency of male sex hormones. Many athletes, for this reason, often use Mesterolone at the end of a steroid treatment in order to increase the reduced testosterone production. This, however, is not a good idea since Mesterolone has no effect on the body's own testosterone production but as mentioned in the beginning-only reduces or completely eliminates the dysfunctions caused by the testosterone deficiency. These are, in particular, impotence which is mostly caused by an androgen deficiency that can occur after the discontinuance of steroids, and infertility which manifests itself in a reduced sperm count and a reduced sperm quality. Mesterolone is therefore taken during a steroid administration or after discontinuing the use of the steroids, to eliminate a possible impotency or a reduced sexual interest. This, however, does not contribute to the maintenance of strength and muscle mass after the treatment. There are other better suited compounds for this (see HCG, Clomid, and Teslac). For this reason Mesterolone is unfortunately considered by many to be a useless and unnecessary compound.
You should be aware that Mesterolone is also an estrogen antagonist which prevents the aromatization of steroids. Unlike the antiestrogen Nolvadex which only blocks the estrogen receptors Mesterolone already prevents the aromatizing of steroids. Therefore gynecomastia and increased water retention are successfully blocked. Since Mesterolone strongly suppresses the forming of estrogens no rebound effect occurs after discontinuation of use of the compound as is the case with, for example, Nolvadex where an aromatization of the steroids is not prevented.
One can say that Nolvadex cures the problem of aromatization at its root while Nolvadex simply cures the symptoms. For this reason male athletes should prefer Mesterolone to Nolvadex. With Mesterolone the athlete obtains more muscle hard-ness since the androgen level is increased and the estrogen concentration remains low. This, in particular, is noted positively during the preparation for a competition when used in combination with a diet. Female athletes who naturally have a higher estrogen level often supplement their steroid intake with Mesterolone resulting in increased muscle hardness. In the past it was common for bodybuilders to take a daily dose of one 25 mg tablet over several weeks, sometimes even months, in order to appear hard all year round. This was especially important for athletes' appearances at guest performances, seminars and photo sessions. Today Clenbuterol is usually taken over the entire year since possible virilization symptoms cannot occur which is not yet the case with Mesterolone.

Since Mesterolone is very effective male athletes usually need only 50-mg/ day which means that the athlete usually takes one 25 mg tablet in the morning and another 25 mg tablet in the evening. In some cases one 25 mg tablet per day is sufficient. When combining Mesterolone with Nolvadex (50 mg Mesterolone per day and 20 mg Nolvadex per day) this will lead to an almost complete suppression of estrogen. Even better results are achieved with 50 mg Mesterolone per day and 500 - 1000 mg Teslac per day. Since Teslac is a very expensive compound (see Teslac) most athletes do not consider this combination.

The side effects of Mesterolone in men are low at a dosage of 24 tablets/day so that Mesterolone, taken for example in combination with a steroid cycle, can be used comparatively without risk over several weeks. Since Mesterolone is well tolerated by the liver, liver dysfunctions do not occur in the given dosages. For athletes who are used to acting under the motto "more is better" the intake of Mesterolone could have a paradoxical effect. The most common side effect of Mesterolone is a distinct sexual overstimulation and in some cases continuous penis erection. Since this condition can be painful and lead to possible damages, a lower dosage or discontinuing the compound are the only sensible solutions. Female athletes should use Mesterolone with caution since possible androgenic side effects cannot be excluded. Women who want to give Mesterolone a try should not take more than one 25 mg tablet per day. Higher dosages and periods of intake of more than four weeks considerably increase the risk of virilization symptoms. Female athletes who have no difficulties with Mesterolone obtain good results with 25 mg Mesterolone per day and 20 mg Nolvadex per day and, in combination with a diet, report an accelerated fat breakdown and continuously harder muscles.
All Mesterolone tablets have one thing in common: they are all indented and on the back have the stamp AX, surrounded by a hexagon.

Trade Names:
Mestoranum 25 mg tab.; Schering DK, S, NO
Pluriviron 25 mg drg.; Asche G
Proviron 10 mg tab.; Schering TK
Proviron 10 mg tab.; Leiras F1
Proviron 20 mg tab.; Leiras F1
Proviron 25 mg tab.; Schering G, A, B, CH, ES, FR, GB, GR, PL, NL, CZ,
Proviron 50 mg tab.; Schering I
Vistimon 25 mg tab.; Jenapharm G