The FDA uses these categories as frameworks for substances used in pharmacy compounding, and it may move peptides from one category to another as safety data changes
Compounded medications are not FDA-approved
From doctor review, payment process, pharmacy process and delivery
Moreover, a US national study of 2,806 older women (50 years) found increased plasma concentration of methylmalonic acid the metabolic indicator of vitamin B 12 deficiency to be associated with increased risk of lumbar spine osteoporosis (115)
B12 plays a vital role in our overall health and well-being and is essential for brain function, DNA replication, and red blood cell production
Evidence for lipotropic injections remains sparse and methodologically weak