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
- Upset stomach
Less Common Side Effects
Alka-Seltzer Plus Cold And Cough serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Allergic reaction: rash; hives; difficulty breathing; swelling of face, lips, tongue, or throat
- Stomach bleed: feeling faint or dizzy, long-lasting stomach pain, coughing up or vomiting blood, bloody or dark-colored stools
- Excessive sleepiness or dizziness
- Serotonin syndrome: fast heart rate, sweating, muscle stiffness or spasms, high fever, confusion
Source: DailyMed
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