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Investigations are guided by clinical suspicion rather than routine panels: for example, thyroid function tests and ferritin may be checked if symptoms suggest deficiency or thyroid disease, while an androgen profile may be appropriate in women presenting with menstrual irregularity, hirsutism, or acne

It was first isolated in human plasma in 1973, and subsequent decades of research have revealed a mechanism that goes considerably beyond simple collagen stimulation

Glutathione is a powerful antioxidant produced naturally within your cells

So thats a really long, randomized controlled trial and strengthens the quality of the evidence

PMID 23792825

These CagriSema numbers put it in direct competition with retatrutide monotherapy