b12 injections subcutaneous or im A Guide to the Best Needles for Best Vitamin B12 Injection Site:

Does the patient have end stage renal disease

You can also see below some special (proprietary) peptides like LIVV FOREVER. Its not just that any of these peptide preps are unproven, but get a hold of how much an injection costs

Stacking 5-Amino-1MQ With Supplements Stacking 5-Amino-1MQ with synergistic supplements can help you burn fat more efficiently, preserve lean mass, and improve recovery during a cutting or metabolic optimization protocol

Reduce body fat mass [6]

The product also downregulates lipogenic genes (e.g., FAS, SREBP1c), further improving hepatic lipid metabolism-again via nicotinamide regulation and NAD+ homeostasis