The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Lightheadedness or dizziness
- Sleepiness
- Headache
- Fatigue
- Nausea
- Vomiting
- Diarrhea
- Constipation
- Stomach pain
- Itchiness
- Skin irritation
- Anxiety
- Excitement
- Trouble sleeping
- Irritability
- Restlessness
- Feeling tense
- Tremor or shaking
- Sweating
- Racing heart
- Urinating more than usual
- Ringing of the ears
- Blind spots in your vision
Less Common Side Effects
- Slowed breathing
- Confusion
- Small pupils
- Difficulty urinating
- Kidney problems
- Dry mouth
- Indigestion
- Loss of appetite
- Hallucinations
- Vivid dreams
- Abnormal blood cell counts
- Erectile dysfunction
- Loss of menstrual period
Trezix serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Extremely slowed breathing
- Overdose: extremely slowed breathing, not responding to sound or touch, slow heartbeat, extreme sleepiness, small pupils the size of a pinhead, pale, blue, or cold or clammy skin
- Withdrawal: suicidal thoughts, anxiety, irritability, runny nose, widened pupils, yawning, sweating, chills
- Serious liver damage: stomach pain, dark urine, yellowing of your skin or eyes, sweating
- Serious skin reactions: reddening or peeling of the skin, painful rash, fluid-filled blisters
- Serotonin syndrome: hallucinations, coma, seizures, confusion, high fevers, racing heart, sweating, muscle stiffness or twitching
- Seizures
Source: DailyMed
The following Trezix side effects have also been reported
Side effects that you should report to your care team as soon as possible:
- Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
- CNS depression—slow or shallow breathing, shortness of breath, feeling faint, dizziness, confusion, trouble staying awake
- Liver injury—right upper belly pain, loss of appetite, nausea, light-colored stool, dark yellow or brown urine, yellowing skin or eyes, unusual weakness or fatigue
- Low adrenal gland function—nausea, vomiting, loss of appetite, unusual weakness or fatigue, dizziness
- Low blood pressure—dizziness, feeling faint or lightheaded, blurry vision
- Pain or trouble swallowing, heartburn, chest pain
- Redness, blistering, peeling, or loosening of the skin, including inside the mouth
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
- Constipation
- Dizziness
- Drowsiness
- Dry mouth
- Headache
- Nausea
- Vomiting
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