For pernicious anemia, vitamin B-12 is usually delivered via injection and may need to be taken regularly for the rest of your life. Vitamin B-12 is available as: Injections into a muscle or under the skin Pills to be swallowed A liquid or tablet that dissolves under the tongue Nose gel or sprays

In this video I completely explain the definition cause clinical features complications investigation management of pernicious anemia in Urdu Hindi and also.

Intrinsic factor is a glycoprotein (produced by the parietal cells of the stomach) that is required for the absorption of vitamin B 12 from the diet. 1 During digestion, stomach acids dissociate B 12 from food and intrinsic factor binds to it and allows it to be absorbed in the small intestine.