Nicotine gum is often used by people who want to give up the habit of smoking. It works by releasing nicotine into the body so that there are no nicotine withdrawal symptoms. There are some side effects associated with nicotine gums.

These include sore mouth and gums, mouth ulcers, dizziness, headaches, stomach upset etc. In general, nicotine gums are considered to be a safe and effective smoking cessation aid. However, there are some situations where it should not be used. People who have heart, liver or kidney disease, those with an over active thyroid, people who suffer from stomach ulcers etc should not use nicotine gum. Similarly, people who use medications like insulin, blood pressure medications, theophylline, acetaminophen, vitamins etc should consult a doctor before using nicotine gum. Pregnant women and breastfeeding mothers should not use nicotine gum.

Nicotine can have harmful effects on the fetus and on breastfeeding babies. Another important point to remember is that one should not smoke while using nicotine gum. This can cause nicotine overdose. Nicotine acts as a neurostimulator by mimicking the action of acetylcholine. This makes it a habit forming substance. Therefore, nicotine gum should to be used for more than 3 months. Users should reduce the dosage and intake every week and gradually wean themselves off the gum.