Some especially rich sources of vitamin B12 include the following: Beef kidney: 1/3 cup (75 g) provides 311% of the recommended dietary intake (RDI) Beef liver: 1/3 cup (75 g) provides 881% of the RDI Canned salmon: 1/3 cup (75 g) provides 61% of the RDI Eggs: 2 large eggs provide 25% of the RDI Ground beef: 1/3 cup (75 g) provides 40% of the RDI Milk: 1 cup (250 ml) provides 20% of the RDI Trout: 1/3 cup (75 g) provides 61% of the RDI Although most insurance is accepted for a vitamin B12 injection, you should contact your insurance company before your visit to confirm coverage and cost
The first converts homocysteine to methionine, which supports DNA synthesis and red cell production
These include pain, swelling, itching, bruising, and redness
Cyanocobalamin clears faster and requires more frequent dosing, so it has largely fallen out of routine use here
Route note: 5-Amino-1MQ is well documented as orally bioavailable and is typically sold and dosed as an oral capsule
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