Gynecomstia can be a possible result of the excess oestrogen levels during and after the cycle. Gynecomstia is also sometime referred to as 'gyne' or 'gyno', and is the formation of breat tissue under the nipples. The first symptoms of gynecomstia if often sore or/and puffy nipples. If left untreated the gynecomstia could worsen and require surgery to correct. Ancillary drugs such as nolvedex and proviron may be implemented if a user is sensitive to such side effects, or develops them mid cycle. However, a better choice would be an anti-aromatase drug such as aromasin, arimidex or femara.