Exemestane belongs to the group of the aromatase, thus blocking the process of flavor by inhibition of estrogen. Can reduce estrogen levels in the body by up to 85%. It also increases the production of testosterone, therefore has the effect of androgen. It is not as strong as letrozole, but on the other hand is stronger than Anastrozole. Exemestane increase testosterone, decreases estrogen also increases levels of IGF and does not have such a strong influence on blood lipids other than IA. Also great to work in combination with tamoxifen. Overall, it connects with the least side effects. The most commonly reported reactions are hot flashes, fatigue, excessive perspiration, headache, insomnia, increased appetite ... is used as in the PCT, but also as the form preventívum gynecomastia and the primer of the steroid during the cycle. Exemestane can be taken at least one week before the start of the cycle in order to reach 100% of its activity when it is used as a prevention. Its half-life is 27 hours. The daily dose is 25 - 50mg. Take one 25mg tablet to two to three days can severely restrict the free estrogens in the body. Tests have demonstrated that a dose of 25 mg of estrogen deprivation is nearly as effective as 50 mg.