Founded in 1988, ProHealth has operated in the supplement industry for 36 yearssignificantly longer than most peptide-specific vendors that have emerged recently
The mechanisms by which metformin may exert its anti-aging effects have been investigated (Wyss-Coray, 2016): inhibition of mitochondrial electron respiratory chain complex 1, reduction of ROS production and inhibition of JNK signaling (McHugh and Gil, 2018)

Where People Buy Peptides: Online "research chemical" suppliers No prescription needed Sold as vials of powder You reconstitute with sterile water Quality unknown Purity unknown 12-58% of supplements are contaminated with unlisted substances Compounding pharmacies (illegally) Some still compound banned peptides Higher quality control (theoretically) Requires prescription Legal risk for pharmacy and doctor Anti-aging/wellness clinics Cash-pay practices May source from gray market Charge $500-2,000+ per month Often stack multiple peptides Black market / gym dealers Sold alongside anabolic steroids Zero quality control Highest contamination risk The Quality Control Problem FDA warnings: Compounded peptides may have impurities Manufacturing varies widely No standardization Cross-contamination possible Real risk: You're injecting a substance of unknown purity, made in facilities with unknown quality control, based on research that doesn't exist, for conditions that haven't been studied

When the results of the study came back, it was very clear that exercise and education was the winner
This whole ecosystem
Multi-dose Vial: Because of the benzyl alcohol preservative, bacteriostatic water typically comes in larger vials (commonly 30 mL plastic vials) that remain sterile for multiple uses