INDICATION
CANASA® (mesalamine) 1000 mg rectal suppositories are indicated in adults for the treatment of mildly to moderately active ulcerative proctitis.
IMPORTANT SAFETY INFORMATION
CONTRAINDICATIONS
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Patients with known or suspected hypersensitivity to salicylates, aminosalicylates, or any ingredients in the suppository vehicle.
WARNINGS AND PRECAUTIONS
Renal impairment
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Renal impairment, including minimal change disease, acute and chronic interstitial nephritis, and renal failure, has been reported. Evaluate renal function prior to initiation of and periodically while on CANASA therapy. Evaluate the risks and benefits of using CANASA in patients with known renal impairment or a history of renal disease and/or those taking concomitant nephrotoxic drugs. Discontinue CANASA if renal function deteriorates while on therapy.
Mesalamine-induced acute intolerance syndrome
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Monitor patients for worsening of cramping, abdominal pain, bloody diarrhea, and sometimes fever, headache, malaise, pruritus, conjunctivitis, and rash and promptly discontinue CANASA if acute intolerance syndrome is suspected. Symptoms usually subside when CANASA is discontinued.
Hypersensitivity reactions
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Mesalamine-induced hypersensitivity reactions may present as internal organ involvement, including myocarditis, pericarditis, nephritis, hepatitis, pneumonitis, and hematologic abnormalities. Evaluate patients immediately if signs or symptoms of a hypersensitivity reaction are present and discontinue CANASA if a hypersensitivity reaction is suspected.
Hepatic failure
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Hepatic failure has been reported in patients with preexisting liver disease who have been administered other products containing mesalamine. Evaluate the risks and benefits of using CANASA in patients with known liver impairment.
Severe cutaneous adverse reactions
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Discontinue CANASA at the first signs or symptoms of severe cutaneous adverse reactions or other signs of hypersensitivity and consider further evaluation.
Photosensitivity
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Advise patients with preexisting skin conditions, such as atopic dermatitis and atopic eczema, to avoid sun exposure, wear protective clothing, and use a broad-spectrum sunscreen when outdoors.
Nephrolithiasis
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Mesalamine-containing stones are undetectable by standard radiography or computed tomography. Ensure adequate hydration during treatment.
Interaction with laboratory test for urinary normetanephrine
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Use of mesalamine may lead to falsely elevated test results when measuring urinary normetanephrine by liquid chromatography with electrochemical detection. Consider an alternative selective assay for normetanephrine.
ADVERSE REACTIONS
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The most common adverse reactions occurring in more than 1% of mesalamine suppository-treated patients were dizziness, rectal pain, fever, rash, acne, and colitis.
DRUG INTERACTIONS
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The concurrent use of mesalamine with known nephrotoxic agents, including nonsteroidal anti-inflammatory drugs (NSAIDs), may increase the risk of nephrotoxicity.
Monitor patients taking nephrotoxic drugs for changes in renal function and mesalamine-related adverse reactions.
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Concurrent use of mesalamine with azathioprine, 6-mercaptopurine, and/or other drugs known to cause myelotoxicity may increase the risk for blood disorders, bone marrow failure, and associated complications. Monitor blood tests, including complete blood cell counts and platelet counts, if concomitant use cannot be avoided.
SPECIFIC POPULATIONS
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Geriatric use: A higher incidence of blood dyscrasias (agranulocytosis, neutropenia, pancytopenia) has been reported in patients receiving mesalamine who are 65 years or older compared to younger patients. Monitor complete blood cell counts and platelet counts in elderly patients during treatment with CANASA.
INDICATION
CANASA® (mesalamine) 1000 mg rectal suppositories are indicated in adults for the treatment of mildly to moderately active ulcerative proctitis.
Please see
full Prescribing Information
for CANASA.