Chlorpheniramine Hydrocodone

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using this medicine and call your doctor at once if you have:

• weak or shallow breathing;
• a light-headed feeling, like you might pass out;
• severe anxiety, confusion, fear, feelings of extreme sadness or happiness;
• tremors, twitching or uncontrollable movements in your face;
• painful or difficult urination;
• little or no urination; or
• severe constipation and stomach pain.

Common side effects may include:

• dizziness, drowsiness, lack of energy;
• mood changes, feeling agitated or irritable;
• problems with thinking or memory;
• constipation;
• nausea, vomiting;
• dry throat, chest tightness;
• blurred vision, double vision; or
• headache.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.