Quote Originally Posted by GS9902 View Post
Arimedex is a type II AI. Which means its effectiveness is dependent on the dosage being taken and the frequency of the administration. Essentially what it does is it binds itself to the Aromatase enzyme and when u stop taking it the drug releases the Enzyme and the enzyme in turn attaches itself to the estrogen receptor. Which cause a rise in estrogen. If this happens at the time of pct you out yourself in danger if an estrogen rebound. How many stories have you heard of PCT gyno? Normally(almost always) when u ask the user what exactly his AI protocol was they mention Adex or Letro(another type II) and they noticed signs of gyno when the drug was discontinued. The whole process is called E2 rebound.
Using Aromasin which is a Type1 AI which uses a process called hydroxylation which forms a permanent bond between the AI and the Aromatase enzyme. That means that individual enzyme is dead forever. No E2 rebound possible with Aromasin.
Then why take dex when aromasin sounds so much safer