DM Lef 20 mg Tablet is used to relieve symptoms of rheumatoid arthritis and psoriatic arthritis. Rheumatoid arthritis is an auto-immune disease (the body's immune system attacks its tissue) which leads to joint pain and damage. Psoriatic arthritis is a kind of inflammatory arthritis which occurs in patients with psoriasis (red patches of skin with silvery scales). 

DM Lef 20 mg Tablet contains 'Leflunomide' an isoxazole immunomodulatory agent which works by blocking the formation of genetic material, i.e. DNA required for survival of replicating (dividing) cells of the immune system. As a result, it suppresses the activated immune system to reduce pain, inflammation and swelling. 

Take DM Lef 20 mg Tablet at the same time every day as prescribed by your doctor. In some cases, DM Lef 20 mg Tablet may cause common side effects such as diarrhoea, nausea, stomach pain, indigestion, rash, and hair loss. Most of these side effects do not require medical attention and will resolve gradually over time. However, you are advised to talk to your doctor if you experience these side effects persistently.

Do not take DM Lef 20 mg Tablet if you are pregnant or planning for pregnancy, as DM Lef 20 mg Tablet may cause serious congenital disabilities. DM Lef 20 mg Tablet should not be taken by breastfeeding mothers as it passes into breast milk. DM Lef 20 mg Tablet may cause dizziness, so drive with caution. Avoid consuming alcohol along with DM Lef 20 mg Tablet as it could lead to increased dizziness and liver damage. DM Lef 20 mg Tablet may make you more susceptible to infections; consult your doctor if you develop any signs of infections such as fever, sore throat, breathlessness, jaundice, unexplained bleeding or bruising.

DM Lef 20 mg Tablet belongs to the group of medicines called anti-rheumatic agents used to relieve symptoms of rheumatoid arthritis and psoriatic arthritis. DM Lef 20 mg Tablet is a disease-modifying antirheumatic drug (DMARDs) which inhibits an enzyme called dihydroorotate dehydrogenase and has antiproliferative activity (suppresses the cell growth). Thereby, helps in treating inflammation, redness, and swelling.

Do not take DM Lef 20 mg Tablet if you are allergic to leflunomide, have severe liverkidney problems, low levels of protein in the blood, immune system problems, bone marrow problems, or serious infections. DM Lef 20 mg Tablet is not recommended to be used in pregnant women, lactating mothers and people below 18 years of age. Talk to your doctor before taking DM Lef 20 mg Tablet if you have/had serious infections like interstitial lung disease (inflammation of lungs), tuberculosis (TB), or pneumonia. DM Lef 20 mg Tablet may cause dizziness, so drive with caution. DM Lef 20 mg Tablet may make you more susceptible to infections; notify the doctor if you develop infections, sore throat, breathlessness, jaundice, unexplained bleeding or bruising.