Hello! So I'm a 19 year old female who recently started back on amphetamine salts. The prescription is to take 1 20mg pill twice a day, I usually only take 1 pill a day except for maybe one or two days a week. So my question to you is can taking adderall effect menstrual cycles? I'm not small, I'm about 5'6 and 150lbs, and I've always been very regular except for in the past 7months where I started a new job and got synced up with coworkers, but even then it typically ended up being like a day early or late and that's it. I started back on adderall on 5/20, and I was supposed to get my period around 5/29 and it is now 6/1. I know being 4 days off isn't much, but for someone who has been pretty regular for the past 6 years and doesn't ever recall it being that off before, its kinda freaking me out. Thanks for your time!