Acetaminophen / dextromethorphan / diphenhydramine / pseudoephedrine Side Effects

Applies to acetaminophen / dextromethorphan / diphenhydramine / pseudoephedrine: capsules

Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; stomach pain; tremor; trouble sleeping; vision changes; yellowing of skin or eyes.

Not all side effects for acetaminophen / dextromethorphan / diphenhydramine / pseudoephedrine may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

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