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
- Involuntary movements (dyskinesia or dystonia)
- Nausea
Less Common Side Effects
- Psychotic behavior (e.g., delusions, hallucinations, paranoia)
- Depression with or without suicidal behavior
- Dementia
- Seizures
- Dark-colored saliva, sweat, or urine
Carbidopa serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Neuroleptic malignant syndrome (NMS): Confusion, very high fevers, irregular pulse, sweating, muscle stiffness, changes in blood pressure
Source: DailyMed
The following Carbidopa 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
- Falling asleep during daily activities
- Mood and behavior changes—anxiety, nervousness, confusion, hallucinations, irritability, hostility, thoughts of suicide or self-harm, worsening mood, feelings of depression
- New or worsening uncontrolled and repetitive movements of the face, mouth, or upper body
- Sudden eye pain or change in vision such as blurry vision, seeing halos around lights, vision loss
- Urges to engage in impulsive behaviors such as gambling, binge eating, sexual activity, or shopping in ways that are unusual for you
