Oral Administration of Vitamin B12 Concentrate in Tropical Sprue and Nutritional Macrocytic Anemia

Abstract
The oral admn. of 25-300 ug. of vit. B12 concentrate (Rubramin, Squibb), per day for 5-7 days in each of 2 cases of acute sprue and 1 case of nutritional macrocytic anemia, produced no significant hematopoietic response, and only questionable clinical improvement. One case of chronic sprue presented slight subjective improvement, but questionable hematologic response. In a case of pernicious anemia in relapse, 150 and 300 ug. daily produced a rapid and sustained hematologic and clinical improvement. No improvement in static, long-standing, neurologic condition was noted.

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