"i was on this for a year before having to switch due to switching insurance and the out of pocket cost. when i first started this medication i did have pretty serious nausea that cleared up within two weeks after my body was able to adjust from the switch. after that i never noticed any other side effects. i did take this in combination with topamax so weight gain was not an issue for me like others mentioned. i also took this in a continuous method in order to prevent mood swings and this worked extremely well for me. so that being said, i cannot attest to how it affected my periods other than i did not have any spotting, etc. it worked extremely well for me and i did not experience any depression or any other negative side effects"