For a first cycle I highly recommend starting at 5mgs and work your way up.. Most women max out at 20mgs.. So starting at 12.5 is a bit high! You want to start small and slow so you can gauge how your body is reacting and nip and side effects in the bud before they get worse.. Post in the forums.. Lots of women to help with your questions, give advice and share stories. Welcome to 'Ology!!