is b12 injection better than oral Injections vs Pills: Richmond's Complete Guide Why B12 Shots are Better

You can find vitamin B12 in: Fish: Salmon (2.4 mcg per 3 oz) and canned tuna (2.57 mcg per 5 oz can) Red meat: Lean beef (6.9 mcg per 3 oz) Poultry: Roasted turkey (0.8 mcg per 3 oz) and ground lean turkey (1.6 mcg per 3 oz) Dairy: Low-fat yogurt (1.2 mcg per 8 oz) and low-fat milk (1.2 mcg per 1 cup) Eggs: One hard-boiled egg has 0.6 mcg of vitamin B12 When to Consider Supplementation Since red and organ meat (i.e., liver) have the highest concentration of Vitamin B12, vegetarians are at an increased risk of a deficiency

Gastrointestinal: Mild transient diarrhea

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None are FDA-approved for anti-aging, but research is promising

NNMT is a cytosolic enzyme that methylates nicotinamide (vitamin B3) using S-adenosylmethionine (SAM) as a methyl donor