Asacol HD (oral): side effects, dosage, interactions, FAQs, reviews. Used for: crohn's disease, maintenance, inflammatory bowel disease, ulcerative colitis, ulcerative colitis, active, and more. Asacol is an aminosalicylate, and symptoms of salicylate toxicity include nausea, vomiting and abdominal pain, tachypnea, hyperpnea, tinnitus, and neurologic symptoms (headache, dizziness. Mesalazine is sold under various names including Apriso, Asacol, Asacol HD, Canasa, Delzicol, Fivasa, Lialda, Salofalk, Pentasa, Rowasa, Octasa, and Sfrowasa. In Europe, it is sold under the name Salofalk (rectal suppository). [27][28] Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of Asacol® and Delzicol® for the treatment of ulcerative colitis in children 5 years of age and older. Asacol is a medication primarily prescribed for the management of inflammatory bowel disease (IBD). Its active ingredient, mesalamine (also known as 5-aminosalicylic acid or 5-ASA), acts locally on the lining of the gastrointestinal tract to reduce inflammation. Asacol™ (mesalazine) is a medicine for the treatment of the inflamed lining of the large bowel (colonic and rectal mucosa). Asacol (Mesalamine Delayed-Release Tablets) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Asacol HD delayed-release 800mg tablets are used to treat moderately active ulcerative colitis in adults. Stop using Asacol HD and call your doctor at once if you have severe stomach pain, stomach cramping, bloody diarrhea (may occur with fever, headache, and skin rash). Mesalamine is used to treat an inflammatory bowel condition called ulcerative colitis. Common side effects include headache, nausea, stomach pain, diarrhea, or infection in the nose or throat. Asacol HD (mesalamine) is a prescription medication approved to treat ulcerative colitis in adults. Learn about dosage, side effects, cost, and more.