The side effects of Proviron in men are low at a dosage of 2-3 tablets/day so that Proviron, taken for example in combination with a steroid cycle, can be used comparatively without risk over several weeks. Since Proviron is well-tolerated by the 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 Proviron could have a paradoxical effect. The most common side effect of Proviron-or in this case, secondary symptom- is in part 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 Proviron with caution since possible androgenic side effects cannot be excluded. Women who want to give Proviron 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 Proviron obtain good results with 25 mg Proviron/day and 20 mg Tamoxifen/day and, in combination with a diet, report an accelerated fat breakdown and continuously harder muscles.