To reduce the risk of major adverse cardiovascular events in patients with type 2 diabetes mellitus and established cardiovascular disease
You have your pick of multiple package sizes, with the per-serving cost dropping in reverse correlation with volume
GHK-Cu: 50mg (Copper-Binding Tripeptide) BPC-157: 10mg (Synthetic Pentadecapeptide) TB-500: 10mg (Thymosin Beta-4 Fragment)
What Should You Know About Units, Volume, and Peptide Strength
You need the full picture: serum B12, methylmalonic acid, homocysteine, and if you can get it, holotranscobalamin
Direct research vendors like Koi, Limitless Life Nootropics, and Swiss Chems are easy for an individual to order from, and the good ones publish batch COAs or independent test results