Which bladder instillation type is FDA-approved for interstitial cystitis?

Which bladder instillation type is FDA-approved for interstitial cystitis?

• A. Heparin with lidocaine
• B. Saline
• C. Antibiotic solution
• D. DMSO (Dimethyl sulfoxide)

Answer: (D)

The main idea is that for interstitial cystitis, the only bladder instillation with an FDA-approved indication is dimethyl sulfoxide (DMSO). DMSO works directly in the bladder to reduce inflammation and pain, acting as an anti-inflammatory and analgesic when instilled into the bladder mucosa. Because of this specific FDA approval, DMSO is the correct choice for an approved intravesical therapy. In practice, DMSO is typically given as a series of bladder instillations (often weekly for several weeks) and may be continued with maintenance as symptoms dictate. Side effects can include a temporary garlic-like taste or odor on the breath, bladder irritation or urgency after the procedure, and occasional transient discomfort. The other options aren’t FDA-approved for interstitial cystitis: heparin with lidocaine is used off-label by some clinicians to help with mucosal coating or pain relief but lacks formal FDA approval for IC; saline instillations are not disease-modifying IC therapy; antibiotic solutions target infection rather than the inflammatory condition of IC.

The main idea is that for interstitial cystitis, the only bladder instillation with an FDA-approved indication is dimethyl sulfoxide (DMSO). DMSO works directly in the bladder to reduce inflammation and pain, acting as an anti-inflammatory and analgesic when instilled into the bladder mucosa. Because of this specific FDA approval, DMSO is the correct choice for an approved intravesical therapy.

In practice, DMSO is typically given as a series of bladder instillations (often weekly for several weeks) and may be continued with maintenance as symptoms dictate. Side effects can include a temporary garlic-like taste or odor on the breath, bladder irritation or urgency after the procedure, and occasional transient discomfort. The other options aren’t FDA-approved for interstitial cystitis: heparin with lidocaine is used off-label by some clinicians to help with mucosal coating or pain relief but lacks formal FDA approval for IC; saline instillations are not disease-modifying IC therapy; antibiotic solutions target infection rather than the inflammatory condition of IC.