the one or more hepatocyte growth factor mimics have a general structural formula , -R 3 -R 3 -NH-(CH 2 ) ir C-NH 2 i is one of an N-acyl group, a substituted or unsubstituted phenyl, a norleucine group, and an amino acid selected from tyrosine, phenylalanine, aspartic acid, arginine, isoleucine, serine, histidine, glycine, cysteine, methionine, tryptophan, lysine norvaline, ornithine, and s-benzyl cysteine
Vitamin B12 toxicity is not typically an issue as it is water soluble, and any excess is excreted in the urine
For individuals aged 50 and above, adequate consumption of vitamin B12 is crucial for maintaining good vision and protecting against macular degeneration
Dosing should follow established protocols rather than experimental high-dose approaches