vitamin b12 injection onset of action Cobalamin (vitamin B12) and Folate Deficiency Optimal Vitamin B12 Dosage and
Description
Plans may help individuals experiencing low energy, nutritional imbalance, or fatigue due to limited dietary intake or absorption challenges

So if a clinic frames the combo as guaranteed faster fat loss, thats marketing, not evidence

doi:10.1111/j.1398-9995.2007.01389.x

[10] Gastrointestinal disturbances-including nausea, loose stools, and a transient fishy body-odor attributable to trimethylamine production from excessive carnitine and choline metabolism-occur in a minority of recipients and are usually self-limiting within 24 to 48 hours after injection

Lyophilised peptides must be reconstituted with bacteriostatic water at controlled temperatures
& Chen, H.-C
