If you use too much (overdose) or in accidental poisoning Over dosage can occur if more than one patch is used, or you smoke or use other nicotine containing products while you are wearing a patch

Symptoms of overdose or poisoning include:

In the event of yourself or someone else showing symptoms seek medical advice

You can also help by doing the following:

Adverse Effects
Nicotine like all other medicines may cause unwanted side effects in some people

Seek professional advice from your doctor or pharmacist as soon as possible if you do not feel well while you are using Habitrol Patch. Most of the undesirable effects reported by users of Habitrol occur during the first weeks after beginning treatment. Some are minor and temporary but others may need medical attention

You may notice the following:

Some effects, such as dizziness, headache and sleeplessness may be withdrawal symptoms due to low nicotine levels

If any of these effects do not go away, or you have any other undesirable effects during use, tell your doctor or pharmacist