I refused Remicade infusion therapy initially. Remicade is a medication used to treat Crohn's disease, ulcerative colitis and rheumatoid arthritis. Remicade helps decrease inflammation associated with inflammatory bowel disease and rheumatoid arthritis. The medicine is hooked into the user's arm via an IV drip and administered by a nurse every 6-8 weeks. The whole process takes about 4 hours. The doctor said it takes two.