As one other post pointed out, keeping blood levels as even as possible will help to reduce sides. Even for injections of long esters, I have gone to an xoox schedule. Now when you come off, your hormones are fluctuating all over the place and this can cause problems obviously. Gyno for some, prostate flare-ups for others, and both if you are unlucky. Estrogen can play a key role in these situations so if you are not already doing it, start using a strong anti-e like adex, femara, or aromisin during your recovery period (femara being the strongest of the three). Additionally the stuff like saw palmetto, green tea extract, lyopene, zinc, etc. are useful if you are prone to this problem.