Neither peptide is FDA-approved for anything
Growth hormone is a potent driver of lipolysis (fat breakdown) and supports muscle protein synthesis, satellite cell activation, and lean mass maintenance (11)
Administered every three to four weeks, B12 injections are convenient to keep your body active with the nutrients it needs and function at its best
Get the details in our updated answer to the question: How can I avoid PFAS in dental floss, food, water, and other products
What affects whether you notice anything at all: Whether you had a true nutrient deficiency to correct (especially for B12-related fatigue) Your calorie intake, protein, and consistency Sleep, stress, and movement Whether youre also using evidence-based tools (like FDA-indicated GLP-1 options when appropriate) Medical disclaimer This article is for education only and is not medical advice