B12 injections work faster than oral supplements of B12 and therefore, are recommended for individuals who need quick improvement
Additionally, a randomized, double-blind, placebo-controlled trial in 2,588 healthy older adults with mild hyperhomocysteinemia found that daily supplementation with 500 g of vitamin B 12 and 400 g of folic acid for two years reduced blood homocysteine concentrations but had no benefit on depressive symptoms in those with or without depressive symptoms at baseline (110)
If you have low vitamin B12 then you may need to look at your diet and eat more animal products, like meat, seafood, dairy and eggs
CLICK HERE FOR SDS Active Ingredients: Each mL contains: Cyanocobalamin (B12) 1,000 mcg Sodium chloride 0.22% w/v Ammonium sulfate 0.1% w/v Citric acid 0.01% w/v Sodium citrate 0.008% w/v Benzyl alcohol (preservative) 1.0% v/v Indications: For use as an aid in the management of vitamin B12 deficiencies in horses, dogs and cats
If youre allergic or intolerant to dairy and drink milk alternatives like almond, soy, oat or cashew milk, be sure to check the nutrition label for vitamin B12