Dihydrocodeine / Guaifenesin Side Effects

Applies to dihydrocodeine / guaifenesin: oral liquid.

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

Breathing problems may be more likely in older adults and those who are ill or debilitated.

Stop using dihydrocodeine and guaifenesin and call your doctor at once if you have:

• confusion, hallucinations, agitation, irritability;

• painful or difficult urination;

• fast or irregular heartbeat;

• seizures (convulsions);

• severe headache, vision changes; or

• a light-headed feeling, like you might pass out.

Common side effects may include:

• constipation, nausea, vomiting;

• dizziness, drowsiness, mild headache;

• anxiety, nervousness;

• increased sweating; or

• tiredness, sleep problems (insomnia).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

See also:

Further information

Dihydrocodeine/guaifenesin side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer