The reasons cited by the FDA included concerns about immunogenicity, peptide impurity characterization challenges, and the lack of adequate safety data from human clinical trials
For most, supplements, such as sublingual drops, or a vitamin B12 pill, is going to do the trick
A combination of vitamins and minerals that help to stimulate the immune system and improve overall well-being
Iron is considerably more toxic to cells expressing CYP2E1 than to cells not expressing this enzyme, and it is suspected that low concentrations of iron may act as a protective factor for CYP2E1 -induced injury
the Isidore and Penny Myers Foundation
This increase may result in several downstream physiological activities associated with increased growth hormone release