self injection b12 needle size Ulove Prs 12 Pack 1ml Industrial Syringes with 25Ga 1 Inch Needle, Plastic Disposable Syringe and for Scientific Labs, Liquids Refilling and Measuring : Industrial & Scientific Best Vitamin B12 Injection Site:

The B12 energy shots effect delivered by our liquid B12 helps sustain natural energy levels throughout the day, enhancing mental clarity and focus

Remember, diabetes patients have been self-injecting that way for decades

B12 is needed for all brain and nervous system activity, energy production, formation of blood, cell metabolism, DNA synthesis, fatty acid synthesis, and homocysteine metabolism

A randomized, double-blind, placebo-controlled trial in 153 older adults taking the antidepressant citalopram found daily supplementation with 500 g vitamin B 12 , 2 mg of folic acid, and 25 mg of vitamin B6 for one year did not reduce the severity of depressive symptoms but increased the response to drug treatment and helped to prevent symptom relapse (112), suggesting B-vitamin supplementation might provide some benefit as an adjunct therapy