Before using this product, tell your doctor or pharmacist if you are allergic to nicotine; or to adhesive tape; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: blood vessel disease (such as Raynaud's disease, stroke), diabetes, heart disease (such as chest pain, heart attack, irregular heartbeat), high blood pressure, liver disease, kidney disease, esophagus problems (such as esophagitis), stomach/intestinal sores (peptic ulcers), a certain adrenal gland tumor (pheochromocytoma), overactive thyroid (hyperthyroidism), seizures, skin problems (such as eczema, contact dermatitis).

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

If you are going to have an MRI test, tell testing personnel that you are using this patch. Some patches may contain metals that can cause serious burns during an MRI. Ask your doctor whether you will need to remove your patch before the test and apply a new patch afterward, and how to do so properly.

Strenuous exercise may raise your skin temperature and increase the amount of nicotine absorbed through the skin. Talk with your doctor about the effects of exercise on this medication.

Avoid exposing the skin under the patch to direct heat sources such as heating pads, electric blankets, heat lamps, saunas, hot tubs, heated water beds, or prolonged direct sunlight while wearing your patch. Heat sources may cause more drug to be released into your body, increasing the chance of side effects.

Nicotine and smoking may harm an unborn baby. If you are pregnant, try to stop smoking without using a nicotine replacement product if possible. During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

Nicotine from smoking and from this medication passes into breast milk and could have undesirable effects on a nursing infant. Smoking near an infant can also harm the infant. Consult your doctor before breastfeeding.