One reviewer noted she only realized how much it was working when she ran out during a trip and felt the difference immediately
Fukagawa N, Ajami A, Young V: Plasma methionine and cysteine kinetics in response to an intravenous glutathione infusion in adult humans
This makes APD a concern for some women undergoing fertility treatments
It first drew research interest for its ability to heal stomach ulcers and inflammatory bowel conditions, then expanded to tendon, ligament, muscle, and even bone healing across dozens of preclinical studies (Sikiric et al., PubMed)
A mechanistic review of -Carotene, lutein, and Zeaxanthin in eye health and disease
The treated follicles physically grew more than the untreated controls, with the effect reaching high statistical significance