Originally characterized at the University of Florida by the Stephen ORahilly and Robert Kraft groups, the compound has been studied in preclinical research for body composition, adipose tissue lipolysis, glucose homeostasis, skeletal muscle aging, and metabolic disease endpoints
I mean just glance at this Wikipedia page

How It Helps Energy & Focus May reduce fatigue and support mental clarity Metabolism Support Helps convert food into usable energy Weight-Management Aid Can complement diet and exercise by supporting normal fat and carbohydrate metabolism Nervous System Function Supports nerve health and red blood cell production Your Care Journey Complete Intake Secure health profile submitted online Provider Consultation Licensed provider reviews your health history and determines if B12 injections are appropriate Prescription Coordination Sent to a licensed pharmacy for fulfillment Treatment Begins Your injections are shipped with instructions Ongoing Support Providers remain available for questions or adjustments Program Details Single-ingredient methylcobalamin (Vitamin B12) Available in 10 mL, 20 mL, and 30 mL multi-dose vials Injection supplies included (syringes, needles, alcohol prep pads) Dosage and vial size are determined by your provider, not self-selected

The scientists commented that abdominal surgery may have caused a delay in gastric emptying, with a notable amount of the meal remaining in the stomach in the vehicle control group
GHK-Cu Storage & Handling Storage Reference State Lyophilized (Powder Form) Storage -4F (-20C) long-term