i have used mr's igf-1 in ba with great results. i gained lean mass on this at 40 mcgs a day and felt the hypoglycemic effects as well so i knew that it was working. i later tried the igf-1 in aa at 80mcgs a day and i saw no changes in muscularity and i did not feel the hypoglycemic effects that i felt on the 1st cycle. i am guessing that it is not as stable in aa as in the ba. anyone else have a similar experience with mr's igf-1