FDA warns supplement firms over unapproved ingredient
May 4, 2015
The FDA issued warning letters to 14 dietary supplement manufacturers because they are using an ingredient not approved for use.The ingredient in question is 4-Amino-2-Methylpentane Citrate, also known as 1,3-Dimethylbutylamine, 2-amino-4-methylpentane, AMP citrate, and 4-methyl-2-pentanamine, or DMBA.