Let me take a shot at better explaining estrogen rebound, anyone feel free to chime in if you disagree or have any other opinions.
When one comes off a cycle your body's androgens are at an all time low do to the suppression of the HPTA. (in layman's terms during a cycle your hypothalamus and pituitary are saying hey this guy is giving us all this testosterone so it responds by producing less hormones LH&
amp;FSH).
Okay, now after a cycle your body is no longer getting exogenous androgens (since you're not jabbing your ass) and the body compensates by over producing estrogen in order to keep
steroid levels up. As a consequence, we know that estrogen inhibits natural testosterone, and as a result, a lot of mass is ultimately lost. This in short is estrogen rebound.
Now to overcome the estrogen rebound you have two options post cycle, either run clomid or nolvadex for 3-5 weeks depending on the length of your cycle. Both Nolva and clomid act at the estrogen receptors binding to them so that estrogen in the body cannot function. The purpose of blocking the estrogen receptors is to allow the hypothalamus to regenerate natural testosterone production in the body. Now comes the debates, well which one is better clomid or nolva? The choice depends on several factors: side effects, cost, health conditions and availability. I personally like running nolva post cycle. The reason is I do not get visual side effects like I do with clomid. I don't get acne like with clomid, nor do I get mood swings like I get on clomid. The final reason I enjoy nolva is that it has a positive impact on both your HDL and LDL, which after a cycle are usually abnormal. Certainly both of these two meds work very well and in the end it comes down to personal preference. Hope this helps everyone. Please feel to give opinions.