Methotrexate (often abbreviated as MTX) is a medication commonly used to treat conditions like rheumatoid arthritis (RA), juvenile idiopathic arthritis (JIA), psoriasis, and certain cancers.It works by inhibiting the enzyme dihydrofolate reductase, which interferes with folate metabolism. While effective, this mechanism can lead to deficiencies in several vitamins, particularly those in the B-vitamin family and […]