A nicotine patch releases a steady dose of nicotine through the skin every day, and nicotine is an active substance. Knowing which side effects are common, which are serious, and when to act makes a patch more predictable to use. This guide sets out what the published medical information and two US drug labels say.
The sources describe nicotine patches in general. None of them is a study of this patch, and nothing here replaces advice from a pharmacist or doctor.
The common side effects
MedlinePlus lists dizziness, headache, nausea, vomiting, diarrhea, and redness or swelling where the patch sits as common side effects of nicotine skin patches. The page says to tell your doctor if these are severe or do not go away.
Not everyone gets them, and the list describes what can happen, not what will.
Skin at the patch site
Redness under the patch is one of the most visible reactions. The Habitrol label, an over-the-counter nicotine patch from another maker, says that if skin redness caused by the patch does not go away after four days, or your skin swells, or you get a rash, you should ask a doctor.
A rash that spreads beyond the patch, or swelling, counts as a serious reaction under the MedlinePlus list below, and needs prompt medical advice.
It helps to know the difference between a mild reaction and a serious one before you need to decide. Mild redness that is still there after a few days is a reason to ask a pharmacist or doctor. A rash that spreads, or swelling of the face or body, is a reason to call a doctor straight away. Writing down where the reaction is and how it changes from day to day makes that conversation quicker and more accurate.
Sleep, dreams and sleep trouble
Patch labels mention vivid dreams and other sleep disturbances. The Habitrol label says that if you have vivid dreams or other sleep disturbances, you should remove the patch at bedtime.
If sleep trouble continues after you have tried that, or it is affecting your day, talk to a pharmacist or doctor about your strength and how you wear the patch.
Heart rhythm
Patches can affect the heart. MedlinePlus lists abnormal heartbeat or rhythm among the serious side effects, and says to call your doctor immediately if it happens. The Habitrol label lists irregular heartbeat or palpitations among the things to watch for.
If you have a heart condition, or have had heart problems before, talk to a doctor before using a patch.
Signs of too much nicotine
The Walgreens label names the symptoms of nicotine overdose as nausea, vomiting, dizziness, weakness and rapid heartbeat. MedlinePlus adds seizures and difficulty breathing among the serious effects that need a call to your doctor right away.
MedlinePlus also warns that using other nicotine products while wearing a nicotine skin patch can lead to nicotine overdose, and says not to smoke cigarettes during that time.
When to call a doctor
Call your doctor immediately if you have a severe rash or swelling, seizures, an abnormal heartbeat or rhythm, or difficulty breathing, as MedlinePlus advises. If you cannot reach a doctor quickly, or the symptoms are severe, get emergency help.
For milder problems that do not go away, such as skin redness that lasts past four days, ask a doctor or pharmacist.
Pregnancy and breastfeeding
MedlinePlus says nicotine and nicotine skin patches may harm a fetus, and tells you to call your doctor right away if you become pregnant while using one.
If you are breastfeeding, talk to a doctor or pharmacist before using a patch.
Children and pets
The Habitrol and Walgreens labels both say that used patches still have enough nicotine to poison children and pets. The Walgreens label says that if a patch is swallowed, you should get medical help or contact a Poison Control Center right away.
MedlinePlus advises keeping medicine out of sight and reach of children, because many containers are not child-resistant. Keep unused and used patches out of sight and out of reach of pets too.
Disposing of used patches
The Walgreens label says to fold the sticky ends of a used patch together, put it in the pouch, and save the pouch for disposal. The fold keeps the sticky sides from catching on anything else.
Ask your pharmacist where to put used patches in your area.
Who should ask first
Some people should talk to a doctor or pharmacist before they start a patch, not after a problem appears. MedlinePlus singles out pregnancy and heart rhythm problems, and the Walgreens label has a section for people who should ask a doctor or pharmacist before use. Read that section on the label you are holding, because the wording varies between makers.
A pharmacist can also check a patch against other medicines you take. Bring the box and a list of your medicines to the appointment, so the advice is about your situation rather than the general case.
Keeping a simple record
A short note helps you and anyone advising you. Record the date you put on each patch, the strength, where on the body it went, and any side effects you noticed with the time they started. A note like that shows whether a reaction is repeating, getting worse, or fading.
Keep the note with the box rather than in a phone app that someone else can read, since it is health information about you.
If you are unsure
Keep the box and the pouch, and read the label before each new patch. If something seems wrong, write down the symptoms, when they started, and what you were doing, then take that list to your pharmacist or doctor.
The short version
The common side effects include dizziness, headache, nausea, vomiting, diarrhea, and redness under the patch. Vivid dreams and sleep trouble are common enough that labels tell you to remove the patch at bedtime. Call your doctor immediately for a severe rash or swelling, seizures, an abnormal heartbeat, or difficulty breathing. Keep patches away from children and pets, used ones included, and fold used patches sticky sides together before you throw them away.
These sources describe nicotine patches in general. None of them is a study of this patch.
