Sufferers of interstitial cystitis should avoid or reduce intake of carbonated beverages, caffeine, citrus products and foods rich in vitamin C, all of which are known bladder irritants and together referred to as the "four Cs," according to Mayo Clinic. Alcohol, among other foods and drinks, may also irritate the bladder.
By controlling the intake of known bladder irritants, a person with interstitial cystitis can find some relief from his discomfort, states Mayo Clinic. Other potential irritants include tomatoes, pickled foods, spices and artificial sweeteners. By eliminating suspected irritants and reintroducing them one at a time while carefully monitoring symptoms, a person can determine which foods and drinks to avoid in the future.
Other steps a person can take to manage his interstitial cystitis include bladder training, wearing loose clothing, limiting stress, stopping smoking and exercising. Bladder training entails timed urination and relaxation techniques, such as controlled breathing and distraction, which can help a person learn to control urinary urges, explains Mayo Clinic.
Interstitial cystitis is a chronic condition that causes sufferers to experience bladder pressure, bladder pain and sometimes pelvic pain. It is also known as painful bladder syndrome and can cause pain ranging from mild discomfort to severe pain, says Mayo Clinic.