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How common is the irregular heartbeat side effect of nyquill?

Responses (1)

Rajive Goel 11 May 2010

Check with your doctor if any of these most COMMON side effects persist or become bothersome when using NyQuil Multi-Symptom:

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

Talk to your pharmacist/doc. if any of these SEVERE side effects occur when using NyQuil Multi-Symptom:

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.

Irregular heartbeat or fast heartbeat is a side effect, hope this helps?

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