Rotate sites to prevent irritation
But as we get older, NAD+ levels naturally decline leading to fatigue, brain fog, and slower recovery

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

For recovery, anti-aging, injury support, and gradual body optimization: peptides are often the better fit
Now that youre more confident about the ins and outs of dosing and injecting, lets look at what side effects of weight loss medications you should look out for