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Preclinical characterization of FGF21 in rodents and primates has established its role in restoring metabolic homeostasis in obese or metabolically challenged animals, reducing body weight, liver and circulating triglycerides, fasting plasma insulin and glucose, and increasing energy expenditure (61)
Luo et al., 2025)
The cheapest insurance against this is buying bacteriostatic water from a source that can confirm what's actually in the bottle manufacturer name, lot number, USP labeling, glass vial with metal-crimp seal, and the explicit "0.9% benzyl alcohol" line
The persistent effects mean daily dosing is likely unnecessary
