Canasa Rect

In Depth

Generic Name: MESALAMINE (5-AMINOSALICYLIC ACID) SUPPOSITORY - RECTAL
Pronounced: (mess-AL-uh-meen)

Canasa Rect Side Effects

Rectal pain, pain when inserting the suppository, headache, gas, stomach pain, and diarrhea may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Infrequently, this medication may make symptoms of your condition worse rather than better (acute intolerance syndrome or sensitivity reaction). Tell your doctor immediately if you experience any of these unlikely but serious side effects:

worsening stomach pain/cramping
worsening bloody diarrhea
fever
severe/prolonged headache

Tell your doctor immediately if any of these rare but very serious side effects occur:

chest pain
trouble breathing
severe stomach/abdominal pain (especially if spreading to the back)
change in the amount of urine
easy bruising/bleeding
signs of infection (such as fever, persistent sore throat)

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:

rash
itching/swelling (especially of the face/tongue/throat)
severe dizziness
trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Canasa Rect Precautions

Before using this medication, tell your doctor or pharmacist if you are allergic to it; or to other medications that are broken down into mesalamine (such as sulfasalazine, olsalazine); or to other salicylates (such as aspirin); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of:

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