Folacin
Folacin is a brand-name folic acid (vitamin B9) supplement used to treat and prevent folate deficiency, which can lead to megaloblastic anemia characterized by abnormally large red blood cells. It is commonly prescribed for pregnant women to support healthy fetal development and may be used in patients with malabsorption syndromes, poor dietary intake, or certain medications that deplete folate levels.
Folacin is a vitamin B9 supplement used to treat folate deficiency and support healthy blood cell production and pregnancy outcomes.
Key facts at a glance
- RxNorm
- 202634
- Generic
- Folacin
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment and prevention of folate deficiency; megaloblastic anemia; pregnancy supplementation to reduce risk of neural tube defects; folate depletion due to malabsorption conditions, alcoholism, or certain medications (such as methotrexate or anticonvulsants)
Provides folate (vitamin B9), an essential water-soluble vitamin required for DNA synthesis, amino acid metabolism, and the formation of healthy red blood cells that carry oxygen throughout the body.
Should be taken as directed by a healthcare provider; high-dose folic acid supplementation may mask vitamin B12 deficiency symptoms; interaction possible with certain anticonvulsants, methotrexate, and sulfasalazine; adequate folate is critical during early pregnancy for fetal neural tube development.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy