What should I watch for?
After use of this medicine, you will be numb for some time. Be careful to avoid injury while the area is numb and you are not aware of pain. Do not scratch, rub, or expose the skin to hot or cold while you are numb.
Do not touch this medicine to the eye. It may cause irritation and injury. If this medicine does touch the eye, wash the eye out with water or saline for eyes. Then protect the eye until feeling returns.
Do not cut the patch or remove the top cover as this could cause the patch to overheat and burn the skin. Do not cover the holes on the top side of the patch as this could cause the patch not to heat.
If you are going to have a magnetic resonance imaging (MRI) procedure, tell your MRI technician if you have this patch on your body. It must be removed before a MRI.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor or nurse immediately if any of the following side effects occur:
Flushing or redness of the skin
unusually warm skin
Blistering, burning, crusting, dryness, or flaking of the skin
change in the color of treated skin
itching, scaling, severe redness, soreness, or swelling of the skin
Burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
cough or hoarseness
fainting or loss of consciousness
fast or irregular breathing
fever or chills
hives or welts
lower back or side pain
painful or difficult urination
swelling of the eyes or eyelids
tightness in the chest or wheezing
trouble with breathing
Incidence not known
chest pain or discomfort
cold, clammy, or pale skin
difficulty with breathing
difficulty with swallowing
dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
fast, slow, or irregular heartbeat
feelings of coldness, heat, or numbness
irregular, fast or slow, or shallow breathing
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
pale or blue lips, fingernails, or skin
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
shakiness in the legs, arms, hands, or feet
shortness of breath
slow heart rate
trembling or shaking of the hands or feet
unusual tiredness or weakness
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Change in consciousness
fast, pounding, or irregular heartbeat or pulse
no blood pressure or pulse
stopping of heart
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
sleepiness or unusual drowsiness
Incidence not known
Continuing ringing or buzzing or other unexplained noise in the ears
false or unusual sense of well-being
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.