What should you know about dry mouth during chemotherapy?

Some chemotherapy medicines reduce saliva or make the mouth lining more sensitive. Dehydration, mouth breathing, nausea, and medicines used for pain or sickness can add to the problem. You may notice sticky saliva, thirst, altered taste, difficulty swallowing dry foods, cracked lips, or a sore mouth. Less saliva means less natural protection against tooth decay, gum irritation, and oral infection.

Take small, frequent sips of water unless your team has given you a fluid restriction. Moisten food with sauces or broth, choose soft foods, and use sugar-free gum or lozenges if swallowing is safe. Brush gently with a soft toothbrush and fluoride toothpaste; rinse with a mild salt-and-baking-soda solution if your team recommends it. Avoid tobacco, alcohol-containing mouthwash, and very spicy or acidic foods. A dentist familiar with cancer care can check your teeth before problems become harder to treat.

Tell your oncology team promptly if mouth pain limits drinking or eating, if you develop white patches, ulcers, bleeding gums, fever, swelling, or trouble swallowing. Seek urgent help for breathing difficulty, rapidly increasing swelling, or inability to keep fluids down. Do not start a saliva substitute, mouthwash, or supplement without checking that it suits your treatment.

Ask which rinses and saliva products are suitable, whether your medicines may be contributing, how often your mouth should be checked, and what to do if eating becomes difficult. Ask whether a dental review is appropriate before your next treatment cycle.