Safety Warning: If pregnant, consult your health-care practitioner before using this product. 5-methyl-tetrahydrofolate (5-MTHF) supplementation is not recommended concurrently with methotrexate cancer therapy, as it can interfere with methotrexate's anti-neoplastic activity. An individual taking methotrexate for psoriasis or rheumatoid arthritis can safely take a supplement containing folate.
