The US Food and Drug Administration has issued a whole bunch of warning letters this month regarding misbranded and adultered dietary supplements. Letters have been sent out by the administration to over ten different companies including the likes of Hi-Tech Pharmaceuticals and eFlow Nutrition.
The reason behind most of the brands receiving the warnings is that they have a product or products containing 2-aminoisoheptane better known as DMHA. While the majority of the letters are related to DMHA, there are a few for supplements using beta-phenyl-gamma-aminobutyric acid also known as phenibut.
The other brands that have been sent warning letters outside of [Hi-Tech and eFlow are NeuroScience, Evol Nutrition, Forbidden Labz, Total Body Nutrition, Down To Earth Solutions, Line One, Iron Brother Supplements, and Metabolic Nutrition regarding Synedrex and E.S.P. Extreme.