Key facts about Canasa
What is Canasa?
Canasa is the brand name of mesalamine and is available as a rectal suppository.
What dosages is Canasa available in?
Canasa is available as a 1000 mg rectal suppository.
What is Canasa used for?
Canasa is an aminosalicylate that is used to treat mildly to moderately active ulcerative proctitis.
How does Canasa work?
Canasa is an aminosalicylate. It’s unclear how this medication exactly works, but it’s known to block chemicals in your body that cause swelling and inflammation.
How do I take Canasa?
Canasa is typically given as 1 suppository administered rectally once daily at bedtime for 3 to 6 weeks.
Is it safe for me to take Canasa?
Canasa is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not take this medication if you have a hypersensitivity to salicylates, aminosalicylates, or any ingredients in its formulation.
Canasa Common Side Effects
Common side effects of Canasa include:
- Dizziness
- Pain in rectum
- Fever
- Rash
- Acne
- Inflammation in colon
Canasa Serious Side Effects
Serious side effects are rare with Canasa. Contact your healthcare provider immediately if you experience any of the following.
- Intolerance syndrome: stomach pain or cramps, bloody diarrhea, fever, headache, weakness, itchy skin, pink eye, rash
- Serious skin reaction: severe rash, itchy skin, skin pain or redness, blisters, burning or watery eyes, weakness, cough, fever
- Allergic reaction: itchy, red rash (hives), shortness of breath, chest tightness, swelling of lips, tongue, face, or eyes
Effects of other drugs, drug classes and over-the-counter products on Canasa
The following medications may interact with Canasa:
- NSAIDs – Increased risk of nephrotoxicity is possible
- Azathioprine or 6-Mercaptopurine – Increased risk of blood disorders
Who makes Canasa?
Allergan
Is Canasa safe in pregnancy?
It is not known if Canasa will harm your unborn baby. If you become pregnant while receiving Canasa, talk to your healthcare provider.













