Proper Use of This Medicine

Take this medicine on an empty stomach (at least 1 hour before or 2 hours after meals) and at least 1 hour before or after any other food, milk, or medicine. Also, always take it with a full glass (8 ounces) of water.

Sometimes pentosan must be taken for up to 3 to 6 months before you begin to feel better. Your doctor should check your progress at regular visits during this time.

Dosing—The dose of pentosan will be different for different patients. Follow your doctor's orders or the directions on the label . The following information includes only the average doses of pentosan. If your dose is different, do not change it unless your doctor tells you to do so.

• For oral dosage form (capsules):
  • To treat interstitial cystitis:
    • Adults—100 milligrams (mg) three times a day for three months. Your doctor may tell you to repeat this dose.
    • Children—Use and dose must be determined by your doctor.

Missed dose—If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage—To store this medicine:

• Keep out of the reach of children.
• Store away from heat and direct light.
• Do not store in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down.
• Keep the medicine from freezing. Do not refrigerate.
• Do not keep outdated medicine or medicine no longer needed. Be sure that any discarded medicine is out of the reach of children.