Elmiron

(pentosan)

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Treats pain, swelling, and irritation of the bladder.

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Our bottom line

Elmiron (pentosan) is a good option for managing pain, swelling, and irritation of the bladder associated with interstitial cystitis, but, it's expensive

Lowest price near you
  • Lowest price with coupon
    $800.90
Quick facts about Elmiron
  • Drug class: Renal
  • Rx status: Prescription only
  • Generic status: No lower cost generic available

Upsides

  • Elmiron (pentosan) is effective at medically managing interstitial cystitis.
  • There are no dosage adjustments required if you have kidney or liver problems.
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What to expect from Elmiron, on one page

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Downsides

  • Elmiron (pentosan) is not available as a cheaper generic form.
  • Elmiron (pentosan) has to be taken three times a day.
  • It has to be taken on a empty stomach.
  • It can take up to 6 months to experience symptom relief.
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What to expect from Elmiron, on one page

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How it works

The exact mechanism of action of Elmiron (pentosan) isn't precisely known. It appears to adhere to the wall of the bladder wall, acting as a buffer to protect it from irritating substances in the urine.

Quick facts about Elmiron
  • Drug class: Renal
  • Rx status: Prescription only
  • Generic status: No lower cost generic available

Used for

  • Interstitial cystitis

Dosage forms

  • Pill
Tried Elmiron? Write a review!

Prices and coupons

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What to expect when you take Elmiron (pentosan) for Interstitial cystitis

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  • First few hoursHours
    First few daysDays
    First few weeksWeeks
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  • Effectiveness
  • Starts to kick in
    Full effects
  • First few hoursHours
    First few daysDays
    First few weeksWeeks
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  • Possible side effects
  • Hair loss
  • Diarrhea
  • Nausea
  • Headache
  • Rash
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Side effect rates for Elmiron (pentosan)

  • Hair loss
    4%4%
  • Diarrhea
    4%4%
  • Nausea
    4%4%
  • Headache
    3%3%
  • Rash
    3%3%
  • Indigestion
    2%2%
  • Stomach pain
    2%2%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Where we got our data »

The placebo bar shows how common a side effect was for people taking a sugar pill instead of Elmiron.

Elmiron (pentosan)
Placebo

People taking Elmiron felt side effect more

People taking Elmiron felt side effect less

No difference

Risks and Warnings for Elmiron (pentosan)

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    • Higher risk if:
    • Taking Elmiron (pentosan) with other blood thinners or NSAIDs

    People taking anticoagulants, such as Coumadin (warfarin), or other blood thinning medications or NSAIDs like Motrin (ibuprofen) can be at a higher risk of bleeding. Tell your doctor if you are on anticoagulants, as they may need to monitor your blood and adjust your medications. Also let your doctor know if you notice blood in your urine or stool.

Common concerns from people taking Elmiron (pentosan)

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Food
  • There is a evidence that the liver breaks down Elmiron (pentosan). Therefore, liver disease can increase risk of side effects. Be sure to talk to your doctor if you have a history of liver problems.
Kidneys and liver
  • There are no dosage adjustments required if you have kidney or liver problems.