Glutathione levels in the body decrease with age, as well as due to poor nutrition, environmental toxins, and stress
NAD levels decline as one ages, and this can also result in a decline in neurological function
However, like any medical treatment, there can be some side effects, such as mild discomfort at the injection site, allergic reactions, or gastrointestinal issues
Opening a cold vial in a warmer, more humid room will cause condensation to form instantly on the powder, compromising its stability before you've even reconstituted it
Wakefield AJ, More LJ, Difford J, Mclaughlin JE