It supports adult brain and nervous system health and contributes to memory, learning, mood regulation and energy levels
Oral B12 supplementation: High-dose oral cyanocobalamin (10002000 micrograms daily) represents an alternative for patients with dietary deficiency or those without severe deficiency or neurological symptoms, and for those unable or unwilling to receive injections
Much of what is sold online is labeled research only, and the purity of those products is highly variable, with independent testing repeatedly finding under-dosed, degraded, or mislabeled peptides across the unregulated market
The combination may produce better results than either alone
Dietary supplements containing only vitamin B12 contain higher doses, such as 500 mcg to 1,000 mcg of vitamin B12
Kawata, T