no sides for me guys. im doing 5iu x 5 days then 2 days off, i did this before one time for 6 mo and had EXCELLENT results... my body responds very well from gh, i never had sides before just a little ankle swelling near the end of the last time.... all my blood labs are great so i didnt have any medical problems... i have had here and there some carpel tunnel but not yet its only the third day of this batch... last time i had jintropin... so well see... curious other guys who have used this