I am about to run my first cycle with 250 mg TST and 200 mg Nandrolone for 10 weeks. I am 37 and working out for over 18 years.

As far as I’ve learned here, there are two ways of how to use Arimidex in order to control E2 level. Either as a preventive measure (0.25 EOD) or since week five after blood work results. My question is, how can I tell wheter I do or do not need to start taking Arimidex? When my E2 grows 2x, 3x or 10x? My current level is 25. I’ve learned that if I start to take it just after high E2 symptoms apear, it’s already too late.

Second question, should I take Arimidex during the cycle only and stop at the begining of the PCT? PCT will be Clomid and Nolva.

Thank you