You might need B12 injections if you have a B12 deficiency, certain health conditions, or symptoms like tiredness, weakness, or neurological issues
But there are times where the body cannot keep up with the demand or is using it faster than it can be made
Previous reports have shown the reduction of aldehydes into alcohols using NADH as a hydride source 15 , NAD + into NADH using formate as a hydride source 16 , pyruvate into lactate using formate as a hydride source 17,18 , or ally alcohols into ketones 19

Here's your shopping list for success: Syringe : A small 1 ml to 3 ml syringe works perfectly Two needles : A purple drawing needle (21G) to pull the B12 from its container, and a thinner blue (23G) or green (21G) needle for the actual injection B12 medication : This comes in either a glass ampoule or rubber-topped vial (remember, this requires a prescription!) Alcohol swabs : To clean both the injection site and vial top Gauze or cotton balls : Just in case there's a tiny bit of bleeding Adhesive bandage : Optional, but nice to have on hand Sharps container : This isn't optionalyou'll need a proper container for safe needle disposal Clean gloves : Not absolutely necessary, but recommended if you have them In the US, you can't just pick up B12 injections at your local pharmacy without a prescription