GENERIC AVAILABLE: Yes
- Preservative free oral capsules: 5 and 20 mg
- Solution for injection: 5 mg/ml (10 ml)
- Oral tablets: 400 mcg, 800 mcg, 1 mg
- Preservative free oral tablets: 800 mcg dye free, 400 and 800 mcg
STORAGE: Folic acid preparations should be stored at room temperature between 15 C and 30 C (59 F and 86 F).
For the treatment of folate deficiency megaloblastic anemia or macrocytic anemia
Patients ≥ 11 years: Administer 1 mg by mouth, subcutaneously (into the fatty tissue), or intramuscularly (into the muscle) once daily until a satisfactory clinical response is attained. The maintenance dose for most adults and children is 0.4 mg by mouth once daily. Patients who become pregnant while undergoing treatment of megaloblastic anemia should receive a maintenance dose of 0.8-1 mg by mouth once daily throughout pregnancy and while breastfeeding.
Patients 1-10 years: Administer 1 mg by mouth, subcutaneously, or intramuscularly, followed by a maintenance dose of 0.1-0.4 mg by mouth once daily.
Infants: Administer 15 mcg/kg or 50 mcg by mouth, subcutaneously, or intramuscularly once daily.
Coadministration of folic acid with cholestyramine (Prevalite, Questran, Questran Light) may decrease the absorption of folic acid. Patients taking both medications are advised to take folic acid 1 hour before or 4-6 hours after cholestyramine.
Folic acid may interfere with methotrexate (Trexall, Rhuematrex, MTX), a medication used to treat certain cancers. Methotrexate works by decreasing the effects of folic acid and therefore, taking these medications together may decrease the effectiveness of methotrexate.
Folic acid supplements may reduce blood levels of certain anti-seizure medications including phenytoin (Dilantin), fosphenytoin (Cerebyx), primidone (Mysoline) and phenobarbital (Luminal) thereby reducing their effectiveness. Also, these medications may also reduce the blood levels of folic acid.
Quick GuidePortion Control Tips: Lose Weight and Stick to Your Diet
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
Use the pill identifier tool on RxList.