Divide the total daily berberine dose across three meals rather than two if GI symptoms are problematic, since smaller individual doses are better tolerated than larger ones
Hubiche, T., Le Duff, F., Chiaverini, C., Giordanengo, V
The FDA's 2019 warning letter to a Nevada compounding pharmacy illustrates the enforcement trigger: the pharmacy marketed pre-mixed glutathione IV bags as 'skin lightening treatments' and 'immune boosters' on its websitedisease and cosmetic claims that crossed into unapproved drug territory
On the other hand, glycolic acid is the better choice for those looking to smooth out rough skin texture and tackle signs of aging
That said, any acid can irritate compromised skin