The agonist binds with its receptor GLP-1 (Glucagon like pepetide) and GlP (Glucose dependent insulinotropic polypetide which stimulates the release of insulin and stops the release of glucagon
PMID 35052658 PMC / NIH Phase IIb study of intranasal glutathione in Parkinsons disease IV GSH bioavailability limitations
Volume is small, usually 0.1 to 0.3 mL
There are 3 different types of sperm motility problems in men: For natural conception, sperm need to travel from the vagina, through the cervix, up the uterus, and into the fallopian tube to reach the egg
(PubMed) However, while some small studies report mild pigment/lightening changes with glutathione (oral or topical), the clinical evidence for long-term, safe, and effective skin-whitening via IV glutathione is weak or absent