Asenapine Side Effects
What should I watch for?
Visit your doctor or health care professional for regular checks on your progress. It may be several weeks before you see the full effects of this medicine. Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse. Tell your doctor or healthcare professional if you feel out of control, very discouraged or think you might harm yourself or others.
Do not suddenly stop taking this medicine. You may need to gradually reduce the dose. Ask your doctor or health care professional for advice.
You may get dizzy or drowsy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol can increase dizziness and drowsiness. Avoid alcoholic drinks.
This medicine may affect blood sugar levels. If you have diabetes, check with your doctor or health care professional before you change your diet or the dose of your diabetic medicine.
Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water will help.
This medicine can reduce the response of your body to heat or cold. Dress warm in cold weather and stay hydrated in hot weather. If possible, avoid extreme temperatures like saunas, hot tubs, very hot or cold showers, or activities that can cause dehydration such as vigorous exercise.
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 immediately if any of the following side effects occur:
Abnormal or decreased touch sensation
inability to move the eyes
inability to sit still
increase in body movements
increased blinking or spasms of the eyelid
lip smacking or puckering
need to keep moving
puffing of the cheeks
rapid or worm-like movements of the tongue
shakiness in the legs, arms, hands, or feet
sticking out of tongue
trembling or shaking of the hands or feet
trouble with breathing, speaking, or swallowing
twitching, twisting, uncontrolled repetitive movements of the tongue, lips, face, arms, or legs
uncontrolled chewing movements
uncontrolled twisting movements of the neck, trunk, arms, or legs
unusual facial expressions
weakness of the arms and legs
pounding in the ears
slow or fast heartbeat
Black, tarry stools
blood in the urine or stools
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
changes in patterns and rhythms of speech
decreased urine output
fast, pounding, or irregular heartbeat or pulse
muscle pain or cramps
nausea or vomiting
pinpoint red spots on the skin
swelling of the face, ankles, or hands
troubled breathing with exertion
unusual bleeding or bruising
unusual tiredness or weakness
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
unusually deep sleep
unusually long duration of sleep
Acid or sour stomach
difficulty with moving
fear or nervousness
increased watering of the mouth
muscle pain or stiffness
pain in the arms or legs
pain in the joints
stomach discomfort, upset, or pain
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.