Olsalazine Dosage
This dosage information may not include all the information needed to use Olsalazine safely and effectively. See additional information for Olsalazine.
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Usual Adult Dose for:
Usual Pediatric Dose for:
Additional dosage information:
Usual Adult Dose for Ulcerative Colitis - Active
500 mg - 1 g orally per day, given in 2 equally divided dosages. Alternatively, doses of 500 mg up to 4 times a day have been used in severe cases.
Usual Adult Dose for Ulcerative Colitis - Maintenance
500 mg orally twice a day.
Usual Adult Dose for Ankylosing Spondylitis
Study (n=4)
500 mg 2 times daily for one week, increased by 500 mg weekly to a maximum of 1 g 3 times daily, for a total of 6 months.
Usual Pediatric Dose for Ulcerative Colitis
Study (n=56)
Greater than or equal to 2 years: 30 mg/kg/day (maximum, 2 g/day), starting at 25% of calculated daily dose, and increasing by one dose every third day, to four doses per day.
Renal Dose Adjustments
Data not available
Liver Dose Adjustments
Data not available
Precautions
Diarrhea has been reported during olsalazine therapy. The adverse event appears to be dose related, although it may be difficult to distinguish from the underlying symptoms of the disease.
Exacerbation of the symptoms of colitis thought to have been caused by mesalamine or sulfasalazine has been observed.
Monitoring of creatinine, blood urea nitrogen, and urinalysis is recommended in patients with preexisting renal disease because of the potential for renal tubular damage due to absorbed mesalamine or its n-acetylated metabolite. Although renal abnormalities were not observed in clinical trials with olsalazine, there have been rare reports from postmarketing experience.
Patients with impaired hepatic function should be monitored during therapy.
Urinary bladder transitional cell carcinomas have been found in animal studies receiving olsalazine 10 to 100 times the human maintenance dose.
Patients with severe allergies or asthma should be observed for signs of worsening symptoms.
In general, elderly patients should be treated with caution due to the greater frequency of decreased renal, hepatic, or cardiac function, co-existence of other disease, as well as concomitant drug therapy.
Safety and effectiveness in a pediatric patients have not been established.
Dialysis
Data not available
Other Comments
Olsalazine should be given with food. Active therapy for ulcerative colitis should be continued until remission, usually 2-4 months.
