Onfi Side Effects
What should I watch for?
Tell your doctor or healthcare professional if your symptoms do not start to get better or if they get worse.
Do not stop taking except on your doctor's advice. You may develop a severe reaction. Your doctor will tell you how much medicine to take.
Wear a medical ID bracelet or chain, and carry a card that describes your disease and details of your medicine and dosage times.
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.
The use of this medicine may increase the chance of suicidal thoughts or actions. Pay special attention to how you are responding while on this medicine. Any worsening of mood, or thoughts of suicide or dying should be reported to your health care professional right away.
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:
Difficulty with swallowing
shakiness and unsteady walk
unsteadiness, trembling, or other problems with muscle control or coordination
Change in speech pattern
trouble sitting still
Incidence not known
black, tarry stools
blistering, peeling, or loosening of the skin
blood in the urine or stools
confusion as to time, place, or person
difficult or troubled breathing
holding false beliefs that cannot be changed by fact
irregular, fast or slow, or shallow breathing
joint or muscle pain
lack of feeling or emotion
painful or difficult urination
pale or blue lips, fingernails, or skin
pinpoint red spots on the skin
red skin lesions, often with a purple center
red, irritated eyes
seeing, hearing, or feeling things that are not there
sores, ulcers, or white spots in the mouth or on the lips
troubled breathing with exertion
unusual bleeding or bruising
unusual excitement, nervousness, or restlessness
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:
body aches or pain
difficulty having a bowel movement (stool)
loss of voice
sleepiness or unusual drowsiness
cough with mucus
frequent urge to urinate
lower back or side 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.