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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:
More common- Decrease in sexual desire or ability
- Agitation
- Blurred vision
- Confusion
- Fever
- Increase in frequency of urination or amount of urine produced
- Lack of emotion
- Loss of memory
- Menstrual changes
- Skin rash or itching
- Trouble in breathing
- Anxiety
- Behavior change similar to drunkenness
- Bleeding gums
- Breast tenderness or enlargement or unusual secretion of milk (in females)
- Difficulty with concentrating
- Dizziness or fainting
- Increased hunger
- Irregular heartbeat
- Irritability
- Lethargy
- Low blood sodium (confusion, convulsions [seizures], drowsiness, dryness of mouth, increased thirst, or lack of energy)
- Mood or mental changes
- Nervousness
- Nose bleed
- Painful urination
- Purple or red spots on skin
- Sore throat, fever, and chills
- Rapid weight gain
- Red or irritated eyes
- Redness, tenderness, itching, burning, or peeling of skin
- Seizures
- Serotonin syndrome (agitation, confusion, diarrhea, fever, overactive reflexes, poor coordination, restlessness, shivering, sweating, talking or acting with excitement you cannot control, trembling or shaking, or twitching)
- Shakiness
- Slow or irregular heartbeat (less than 50 beats per minute)
- Stupor
- Swelling of the face, ankles, or hands
- Trouble with holding or releasing urine
- Unusual or sudden body or facial movements or postures
- Unusual tiredness or weakness
- Abdominal or stomach pain
- Back or leg pains
- Black, tarry stools
- Bleeding gums
- Bloating
- Bloody stools
- Chest pain
- Confusion as to time, place, or person
- Constipation
- Cough
- Darkened urine
- Difficult or fast breathing
- Difficulty swallowing
- Drooling
- Fast, slow, or irregular heartbeat
- Fatigue
- General body swelling
- Hallucinations
- Hive-like swelling on the face, eyelids, lips, tongue, or throat
- Hives
- Holding false beliefs that cannot be changed by fact
- Impaired consciousness, ranging from confusion to coma
- Indigestion
- Itching, puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
- Loss of appetite
- Loss of bladder control
- Loss of consciousness
- Muscle cramps or spasms
- Muscle tightness
- Muscle twitching or jerking
- Nervousness
- Nosebleeds
- Pale skin
- Penile erections, frequent or continuing
- Recurrent fainting
- Redness, tenderness, itching, burning, or peeling of skin
- Restlessness or agitation
- Rhythmic movement of muscles
- Shortness of breath
- Skin rash
- Swelling of breasts or unusual milk production
- Tenderness, pain, swelling, warmth, skin discoloration, and prominent superficial veins over affected area
- Tightness in chest
- Total body jerking
- Twitching, twisting, uncontrolled repetitive movements of tongue, lips, face, arms, or legs
- Uncontrolled jerking or twisting movements
- Unusual excitement
- Vomiting of blood or material that looks like coffee grounds
- Wheezing
- Yellowing of the eyes or skin
- Bluish colored skin or lips
- Confusion
- Convulsions (seizures)
- Coma
- Deep or fast breathing with dizziness
- Dizziness
- Drowsiness
- Fainting
- Fast heartbeat
- General feeling of discomfort or illness
- Loss of memory
- Muscle pain
- Nausea
- Sleepiness
- Slow or irregular heartbeat
- Sweating
- Trembling or shaking
- Vomiting
- 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:
More common- Drowsiness
- Dry mouth
- Nausea
- Sleepiness or unusual drowsiness
- Trouble in sleeping
- Abdominal pain
- Anxiety
- Body aches or pain
- Change in sense of taste
- Chills
- Diarrhea
- Difficulty with breathing
- Gas
- Headache
- Headache (severe and throbbing)
- Heartburn
- Increased sweating
- Increased yawning
- Loss of appetite
- Loss of voice
- Nasal congestion
- Pain in muscles or joints
- Sneezing
- Sore throat
- Stuffy or runny nose
- Tingling, burning, or prickly feelings on skin
- Tooth grinding
- Trembling or shaking
- Unusual increase or decrease in weight
- Unusual tiredness or weakness
- Vomiting
- Watering of mouth
- Bruising
- Inability to sit still
- Large, flat, blue or purplish patches in the skin
- Need to keep moving
- Restlessness
- Uncontrolled eye movements
After you stop using this medicine, it may still produce some side effects that need attention. During this period of time, check with your doctor immediately if you notice the following side effects:
- Anxiety
- Dizziness
- Nervousness
- Trembling or shaking
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.
