Aromasin is a steroidal aromatase inhibitor comprised of the active drug Exemestane. Designed as part of a treatment plan in the fight against breast cancer, especially in postmenopausal women due to the nature by-which it actively reduces the flow of estrogen, an enemy for breast cancer patients, by its very action Aromasin has found a welcomed home in the performance enhancing world.
Very similar in many ways to other aromatase inhibitors, particularly Arimidex and Letrozole, Aromasin has some characteristics unique unto its own. Like all aromatase inhibitors Aromasin is useful to the steroid using athlete in the prevention of unwanted side-effects such as Gynecomastia and excess water retention. By its mode of action Aromasin inhibits the conversion of estrogen in the body; as many anabolic steroids convert to estrogen after administration due to the aromatase process, Aromasin actively inhibits this process. By its inhibiting nature the total amount of estrogen in the body is reduced and blocked from binding thereby preventing common associated adverse side-effects.
While the aromatase inhibiting effect is its primary function and primary reason for using Aromasin it also carries with it other characteristics that may be of interest to the anabolic steroid user. Aromasin has been shown to greatly stimulate natural testosterone production by a slight androgenic nature. While other aromatase inhibitors can also increase total testosterone production Aromasin actively does so while increasing natural IGF 1 production as well; Arimidex and Letrozole cannot boast such a claim.
For the anabolic androgenic steroid using athlete the most important question is when is the best time to use Aromasin as it can be effectively used while on cycle for the prevention of estrogenic related side-effects as well as during post cycle therapy (PCT.) It can be used for both purposes but most will find PCT periods to be best served with SERMs and hCG and the use of aromatase inhibitors while on cycle to be the most efficient method of practice.