fda warning unapproved peptides sold online bpc 157 tb 500 Public advisory The Unregulated World of Peptides:

When the NNMT enzyme is overactive, its often associated with insulin resistance, a condition where your cells dont respond well to insulin and cant easily take up glucose from your blood

Since there are obvious differences between rodent and human physiology, it cannot be ignored that this may have a significant impact on the efficacy and safety of (any) novel agents

This is what his doctor called it

MHRA guidance (2022) recommends B12 monitoring for patients on long-term metformin therapy

Dosage: The dosage of Vitamin B12 Injection will vary depending on the patient's medical history, age, and severity of the deficiency