What should you know about nicotine gum and mouth cancer?

Nicotine gum is used to help people stop smoking, but a persistent mouth change still needs assessment because it has many possible causes. Gum can irritate the mouth or jaw in some people, while mouth cancer is assessed through examination and, when needed, tissue testing. A mouth sore or lump does not by itself establish cancer.

Nicotine gum releases nicotine through the lining of the mouth. Chewing it continuously like ordinary gum can cause mouth or throat discomfort, hiccups, jaw soreness, or irritation. Use the chew-and-park method and follow the product instructions supplied to you or your pharmacist.

Mouth cancer can affect the lips, tongue, gums, inner cheeks, floor of the mouth, or roof of the mouth. A sore, patch, thickened area, unexplained bleeding, numbness, loose tooth, or neck lump that persists should be examined. These signs have several possible explanations, so examination is needed rather than self-diagnosis.

Arrange a dental or medical assessment for a mouth change that does not settle, especially if it is painful, enlarging, bleeding, or affecting eating or swallowing. Do not pick at the area or apply unprescribed products. Tell the clinician how long it has been present, where you place the gum, and whether you smoke, vape, or use other tobacco products. If cancer is diagnosed, treatment may include [Tumour Removal Surgery](/treatments/surgical-oncology/tumour-removal-surgery/), [Neck Dissection](/treatments/surgical-oncology/neck-dissection/), or [Radiotherapy](/treatments/radiation-oncology/radiotherapy/).

Seek urgent help if swelling makes breathing difficult, you cannot swallow fluids, bleeding is heavy or persistent, or you develop sudden facial weakness. Contact a clinician promptly for a mouth ulcer, patch, lump, numb area, or unexplained tooth loosening that continues or worsens. Do not wait for nicotine gum irritation to explain a change that is not improving.

Could the gum or another product be irritating this area? How should I use nicotine gum correctly? How long should I watch this change before review? Do I need a dental examination, specialist referral, or tissue sample? What can I use to stop smoking if chewing is uncomfortable?