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
- Sleepiness
- Dizziness
- Dry mouth
Less Common Side Effects
- Restlessness
- Headache
- Constipation
- Diarrhea
- Trouble urinating
- Blurry vision
Acetaminophen/Diphenhydramine/Phenylephrine serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Excessive sleepiness or dizziness
- Serious liver problems: severe stomach pain, yellowing of skin or eyes, nausea, vomiting, loss of appetite
- Taking too much medication: seizures, hallucinations, confusion, flushed skin, skin that's warm to the touch, vision changes
Source: DailyMed
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