What should I watch for?
Tell your doctor or health care professional if your symptoms do not start to get better or if they get worse.
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.
If you are taking another medicine that also causes drowsiness, you may have more side effects. Give your health care provider a list of all medicines you use. Your doctor will tell you how much medicine to take. Do not take more medicine than directed. Call emergency for help if you have problems breathing or unusual sleepiness.
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:
Incidence not known
Black, tarry stools
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
fast, pounding, or irregular heartbeat or pulse
loss of bladder control
muscle spasm or jerking of all extremities
painful or difficult urination
shortness of breath
sores, ulcers, or white spots on the lips or in the mouth
sudden loss of consciousness
unusual bleeding or bruising
unusual tiredness or weakness
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Bigger, dilated, or enlarged pupils (black part of the eye)
change in consciousness
confusion as to time, place, or person
difficult or troubled breathing
false or unusual sense of well-being
holding false beliefs that cannot be changed by fact
inability to move the eyes
increased blinking or spasms of the eyelid
increased sensitivity of the eyes to light
irregular, fast or slow, or shallow breathing
loss of consciousness
muscle stiffness or tightness
pale or blue lips, fingernails, or skin
sticking out of the tongue
trouble with breathing, speaking, or swallowing
uncontrolled eye movements
uncontrolled twisting movements of the neck, trunk, arms, or legs
unusual excitement, nervousness, or restlessness
unusual facial expressions
weakness of the arms and legs
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:
Incidence not known
deep or fast breathing with dizziness
face is warm or hot to touch
fainting feeling of constant movement of self or surroundings
numbness of the feet, hands, and around the mouth
pain or discomfort in the chest, upper stomach, or throat
redness to face
sensation of spinning
shakiness and unsteady walk
unable to sleep
unsteadiness, trembling, or other problems with muscle control or coordination
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.