Asendin Side Effects
What should I watch for?
Tell your doctor if your symptoms do not get better or if they get worse. Visit your doctor or health care professional for regular checks on your progress. Because it may take several weeks to see the full effects of this medicine, it is important to continue your treatment as prescribed by your doctor.
Patients and their families should watch out for new or worsening thoughts of suicide or depression. Also watch out for sudden changes in feelings such as feeling anxious, agitated, panicky, irritable, hostile, aggressive, impulsive, severely restless, overly excited and hyperactive, or not being able to sleep. If this happens, especially at the beginning of treatment or after a change in dose, call your health care professional.
You may get drowsy or dizzy. 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 may interfere with the effect of this medicine. Avoid alcoholic drinks.
Do not treat yourself for coughs, colds, or allergies without asking your doctor or health care professional for advice. Some ingredients can increase possible side effects.
Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water will help. Contact your doctor if the problem does not go away or is severe.
This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.
This medicine can cause constipation. Try to have a bowel movement at least every 2 to 3 days. If you do not have a bowel movement for 3 days, call your doctor or health care professional.
This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.
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:
fast, irregular, pounding, or racing heartbeat or pulse
fear or nervousness
mood or mental changes
shakiness and unsteady walk
shakiness in legs, arms, hands, or feet
unable to sleep
unsteadiness, trembling, or other problems with muscle control or coordination
Abdominal or stomach pain
actions that are out of control
black, tarry stools
blood in urine or stools
burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
chest pain or discomfort
confusion about identity, place, and time
continuing ringing or buzzing or other unexplained noise in ears
cough or hoarseness
decrease in frequency of urination
decrease in urine volume
difficulty in breathing
difficulty in passing urine (dribbling)
difficulty in speaking
dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
extremely high fever or body temperature
false beliefs that cannot be changed by facts
fast, weak heartbeat
fever with or without chills
general feeling of tiredness or weakness
high or low blood pressure
hives or welts
inability to move arms, legs, or facial muscles
inability to speak
increased need to urinate
lack of coordination
lip smacking or puckering
loss of appetite
loss of bladder control
lower back or side pain
muscle spasm or jerking of all extremities
muscle trembling, jerking, or stiffness
pain or discomfort in arms, jaw, back, or neck
painful or difficult urination
pains in stomach, side, or abdomen, possibly radiating to the back
pale, clammy skin
passing urine more often
pinpoint red spots on skin
pounding in the ears
puffing of cheeks
rapid or worm-like movements of tongue
redness of skin
seeing, hearing, or feeling things that are not there
severe muscle stiffness
shortness of breath
sores, ulcers, or white spots on lips or in mouth
stiffness of limbs
sudden loss of consciousness
talking, feeling, and acting with excitement
trouble in holding or releasing urine
twisting movements of body
uncontrolled chewing movements
uncontrolled movements, especially of face, neck, and back
unpleasant breath odor
unusual bleeding or bruising
unusually pale skin
upper right abdominal pain
vomiting of blood
yellow eyes and skin
Get emergency help immediately if any of the following symptoms of overdose occur:
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:
increased flow of breast milk
change in taste bad unusual or unpleasant (after)taste
decreased interest in sexual intercourse
excess air or gas in stomach or intestines
hair loss, thinning of hair
inability to have or keep an erection
increased in sexual ability, desire, drive, or performance
increased interest in sexual intercourse
increased sensitivity of skin to sunlight
loss in sexual ability, desire, drive, or performance
rapid weight gain
redness or other discoloration of skin
swollen, painful, or tender lymph glands on side of face or neck
tearing of the eyes
unexpected or excess milk flow from breasts
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.