Lee B, Shi L, Kassel DB, Asakawa T, Takeuchi K, Christopher RJ (2008) Pharmacokinetic, pharmacodynamic, and efficacy profiles of alogliptin, a novel inhibitor of dipeptidyl peptidase-4, in rats, dogs, and monkeys
Consult your healthcare provider if you experience persistent or severe side effects
In preliminary intervention studies, pharmacologic doses of betaine (1,500 to 6,000 mg/day) were found to reduce blood homocysteine concentrations in a small number of volunteers with normal-to-mildly elevated homocysteine concentrations (37-40)
Di Pietro G et al
You want to know whether those changes are the peptide doing its job, or just better lighting and a filter