While there's limited research on copper peptides, Murphy-Rose says that it seems to suggest that the ingredient has great benefits for the skin, with little risk of irritation or other adverse effects
Bacteriostatic water and other bacteriostatic solutions are widely used in research and clinical settings, but the 0.9% benzyl alcohol component is contraindicated for neonates and may cause adverse effects in very young infants and certain sensitive populations
88, 855S858S
These are not theoretical risks
Unopened lyophilized powder is more forgiving and can tolerate brief room-temperature periods, but a reconstituted vial needs consistent refrigeration and should be used within 28 days, the window supported by bacteriostatic water's antimicrobial preservative
"My other problem is I get a LOT of yeast infections" I had lots of fungal infections eg athlete's foot, ringworm, dandruff (like a snowstorm) and thrush before I got enough B12