Gothic doesn't run an ai .. he has ai's and nolva on hand just in case.. he doesn't pct either but he isn't of the age where needs to ... I think you will find opposing sides on the subject of whether or not you should run an estrogen blocker during cycle ..some swear by it and others just don't.. nolva is a good estrogen blocker it basically attaches to the receptors and fills them so that the estrogen can't attach to the receptor. the only problem with that is that when you stop you may experience an estrogen rebound.. I also like it because it is not linked with increased ldl cholesterol like aromisin is ...
It should be noted that in theory if one was to consistently suppress your natural estrogen levels for a long period of time, this would negatively impact your health, including your cholesterol. Due to the ability of Letrozole- to inhibit estrogen so much, this should definitely be a concern to most users. However the research that has focused on the relationship between use of letrozole and cholesterol levels is rather inconsistent in it's findings. Many studies have concluded that the compound is detrimental to both a user's HDL and LDL cholesterol levels, while other research has found no link. Obviously individuals are best served to monitor their cholesterol while using any compound via blood tests however barring that, letrozole should simply not be run for extended periods of time if at all possible. Doing so could cause serious medical complications.
Along with the issues related to blood lipids is the fact that many users complain that their libido is dramatically reduced when using the compound. This is related to the fact that estrogen is partly responsible for the regulation of an individual's sex drive. Since Letrozole- is so potent it can often drive estrogen levels too low and this inhibits a user's libido. To avoid this users can lower dosages, but some anecdotally report that even extremely low doses of the drug can cause problems. If this is the case a less potent compound such as exemestane or anastrozole may be a more appropriate option.