• Moderately active UC is characterized by tougher symptoms than mildly active UC. Asacol® HD (mesalamine) at 4.8 grams/day is proven to help treat these tougher flares of moderately active UC
  • In clinical studies, Asacol® HD rapidly decreased the number of trips to the bathroom (i.e., the number of bowel movements) in the majority of patients by 3 weeks*
  • Asacol® HD has a patented delivery system that gets medicine to the colon where it is needed most

* Individual results may vary.

Please scroll down to see Important Safety Information.

It's your time, your life...Talk to your healthcare provider about Asacol® HD (mesalamine) today!


Asacol® HD (mesalamine) delayed-release tablets are available only by prescription for the treatment of moderately active ulcerative colitis (UC) in adults.


Important Safety Information about Asacol® HD (mesalamine) delayed-release tablets

You should tell your doctor and you should not take Asacol® HD if you are allergic to salicylates (including mesalamine, aspirin, or aspirin-containing products) or to any of the ingredients of Asacol® HD.

Reports of problems with kidney function have been associated with mesalamine-containing products like Asacol® HD. Tell your doctor if you have or have had any problems with your kidneys. It is recommended that all patients have their kidney function checked before starting Asacol® HD and periodically while on therapy.

Products that contain mesalamine, like Asacol® HD, have been associated with a condition that may be difficult to distinguish from an ulcerative colitis flare-up. Symptoms include cramping, stomach ache and bloody diarrhea, and sometimes fever, headache, and rash. If you experience any of these symptoms, talk to your doctor immediately. Your doctor may decide to discontinue your medication.

Tell your doctor if you have a stomach blockage (pyloric stenosis), as this may delay the release of medication.

Reports of liver failure have been associated with mesalamine-containing products like Asacol® HD in patients that have or have had liver disease. Tell your doctor if you have a problem with your liver.

Asacol® HD has not been studied in pregnant women.Ā  Talk to your doctor if you are pregnant, planning to become pregnant, or are breastfeeding because Asacol® HD may not be right for you.

In clinical trials, common side effects reported with AsacolĀ® HD included headache, runny nose, diarrhea, stomach pain, belching, flatulence, general pain, and upset stomach. Other side effects may occur.

You should not substitute one Asacol® HD 800 mg tablet for two Asacol®(mesalamine) delayed-release 400 mg tablets unless directed by your doctor.

Please see Full Prescribing Information.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088.

Asacol® is a registered trademark of Medeva Pharma Suisse AG, used under license by Warner Chilcott Company, LLC.