US$ 29.44
vitamin b12 injection dose for horses Troy – vet-n-pet DIRECT 000 mcg/mL of supplemental vitamin B Vitamin B12 Injection 0.1% Veterinary
Description
It is not approved by the FDA or any other regulatory body for human or veterinary use, and nothing in this guide constitutes guidance for human administration

Topical scalp: 0.5 % solution, 12 ml twice daily for at least 6 months

PMC11444426, Premature Graying of Hair: Comprehensive Review

PMID 32310424