After having treatment for interstitial cystitis, will my bladder capacity return back to normal?

Is should improve: Your bladder capacity might not return to normal but it will likely improve. Symptoms such as frequency, urgency and pain should improve as well.

Yes: Usually with interstitial cystitis the symptoms of frequent urination occurs because the bladder wall is inflammed .Bladder capacity remains unchanged.Once treated you get symptomatic relief.