why do you not inject b12 into top of theigh How to Self-Inject Vitamin at Home Best Vitamin B12 Injection Sites:

Based on the positive results from three Phase III studies, in 2012 FDA approved topiramate/phentermine extended-release as an adjunct to a reduced-calorie diet and increased physical activity for chronic weight management in eligible adults

Cerovecki T, Bojanic I, Brcic L, et al

Dosage protocols and administration routes Effective protocols for penta deca peptide arginate vary based on the administration route, the condition being addressed, and individual factors like body weight and response sensitivity

The best location for a subcutaneous injection depends on a persons pain sensitivity and where they have some subcutaneous fat