B12 Nitro is extremely effective.
Here is some info:
A study appeared in Blood (August 15, 1998;92 (4):1191-1198) that looked at 38 patients who were diagnosed with vitamin B12deficiency.
The patients were given either a 1 milligram intramuscular injection of cobalamin (on days 1, 3, 7, 10, 14, 21, 30, 60 and 90) or a two milligram oral dose for four months. After four months of therapy, cobalamin levels where higher , and homocysteine levels and methylmalonic acid levels were lower in the group receiving the oral therapy.
That means that the oral dose was more effective than the shot!
An article that appeared in the Journal of the American Medical Association (January 2, 1991;265(1):94-95 ) reviewed the potential of oral B12 therapy for patients with pernicious anemia. A Swedish study found that patients with pernicious anemia were effectively treated with one milligram of oral B12 per day.
B12 Nitro lozenges contain 2 mg. of vitamin B12 and 800 mcg of folic acid in a tasty lozenge that is well tolerated by both the elderly and small children.
The authors of the JAMA article state that the time has come for the use of oral cobalamin therapy. It is cheaper and less invasive than injections.