Cystitis: Prevention...

Keeping the genital area clean and remembering to wipe from front to back may reduce the chance of introducing bacteria from the rectal area to the urethra.

Fluids

Increasing the intake of fluids may allow frequent urination to flush the bacteria from the bladder. Urinating immediately after sexual intercourse may help eliminate any bacteria that may have been introduced during intercourse. Refraining from urinating for long periods of time may allow bacteria time to multiply, so frequent urinating may reduce risk of cystitis in those who are prone to urinary tract infections.

Cranberry Juice

Drinking cranberry juice prevents certain types of bacteria from attaching to the wall of the bladder and may lessen the chance of infection. Cranberry extract tablets have also been found to be effective in preventing cystitis, and avoid the taste of cranberry juice, which some find unpleasant.