My patient has hereditary hemolytic anemia. How much folic acid should they take?

By William Aird

1-5 mg/day

According to DailyMed: Daily doses greater than 1 mg do not enhance the hematologic effect, and most of the excess is excreted unchanged in the urine. The usual therapeutic dosage in adults and children (regardless of age) is up to 1 mg daily. Resistant cases may require larger doses.