Severe side effects
These effects can be hazardous or life-threatening if immediate help is not given. You should talk to your doctor if you experience any severe side effects. Serious side effects include:
- Mood changes, such as irritability, impatience, anger, stubbornness, or sadness
- Confusion, including delirium
- Lightheadedness or dizziness
- Sleepiness
- Blurred or impaired vision
- Tingling or numbness in your lips or tongue
- Headaches
- Weakness or fatigue
- Lack of coordination
- Nightmares or crying out in your sleep
- Seizures [3]
- Unconsciousness
- Hypersensitivity (allergic) reactions [4].