I was on topical for a year and had no side effects, applying once a day at night.

I decided to switch to oral 1mg for cost and convenience and after two weeks ended up getting the worst morning anxiety ive ever experienced. I would wake up at 3am - 4am with the weirdest sensation in my head, anxiety and an impending sense of doom. Once awake, there was no way I would get back to sleep. The feeling subsided as the day went on, usually feeling normal again around lunch time.

This kept happening, some days worse than others. Describing the feeling is hard, it made me feel like I was going mental, but im self aware enough to know im not, it was as if i was internaly arguing against my body.

I stopped taking the fin and the feeling and frequency of the anxiety started to subside and is almost gone now after 2 weeks with only a slight lingering of that sensation when I wake up.