Dexbrompheniramine, Phenylephrine, Dextromethorphan Side Effects

Possible side effects of dexbrompheniramine, phenylephrine, and dextromethorphan are listed below. Call your doctor for medical advice if these side effects are severe or continue after a few days once your body adjusts to the medicines.

• Drowsiness
• Dizziness
• Dry mouth, nose, and throat
• Headache
• Stomach ache
• Nausea
• Vomiting
• Chest congestion
• Insomnia (trouble sleeping)
• Restlessness
• Nervousness

Rarely, dexbrompheniramine, phenylephrine, dextromethorphan can cause more serious side effects. Call your doctor right away or seek emergency medical attention if you develop the following symptoms:

• Severe dizziness
• Vision problems
• Trouble urinating
• Allergic reaction (rash, hives, itching)

The above list may not include all the potential side effects of dexbrompheniramine, phenylephrine, dextromethorphan. Contact your healthcare provider if your side effects are unusual or severe or if they do not get better over time. You can also report suspected adverse reactions to the Food and Drug Administration at 1-800-FDA-1088.

Dexbrompheniramine, Phenylephrine, Dextromethorphan Overdose: In case of an overdose of dexbrompheniramine, phenylephrine, dextromethorphan, call your doctor immediately. You can also call your local poison control center or the national poison control center at 1-800-222-1222. Call 911 if a person has trouble breathing, has collapsed, is unresponsive, or has had a seizure. Signs and symptoms of an overdose may include drowsiness, dizziness, unsteadiness, difficulty breathing, fast heartbeat, vision changes, nausea, vomiting, hallucinations, seizures, or loss of consciousness.

Source: FDA