Adult: IM- 250-1,000 mcg on alternate days for 1-2 week, then 250 mcg weekly. Maintenance: 1,000-mcg monthly. It comes as a solution (liquid) to be injected into the muscle or under the skin, without food.
How it works
It is an essential nutrient that helps the body make healthy red blood and nerve cells.
Common side effects
Headache, nausea, vomiting, diarrhea, loss of appetite, skin rash, hot flushes