Pure Encapsulations B12 Liquid Best overall Form & DoseMethylcobalamin (1,000 mcg per 1 mL dropper) Servings30 servings per 30 mL bottle Price Per Day~$0.73 to ~$1.00 Best ForAdults 60+ and those on metformin, PPIs, or H2 blockers Verified July 2026 Pure Encapsulations is a practitioner-grade brand stocked in clinical and integrative-medicine settings
For background on the copper tripeptide itself, Wikipedias GHK-Cu overview provides foundational context
Targeted Nutrition Delivered Directly Unlike oral supplements that take time to break down in your digestive system, vitamin injections bypass the digestive process for faster, more complete absorption
Future studies measuring follicular fluid B12, homocysteine, and methylation markers are needed to validate these pathways
Journal of Human Nutrition & Dietetics 32 (4): 518524
A population-based study in 3,884 elderly men and women with depressive disorders found that those with vitamin B 12 deficiency were almost 70% more likely to experience depression than those with normal vitamin B 12 status (98)
