Dyphylline / Guaifenesin Side Effects

Medically reviewed by Drugs.com. Last updated on Apr 29, 2024.

Applies to dyphylline / guaifenesin: oral tablet.

Important warnings This medicine can cause some serious health issues

Dyphylline and guaifenesin should not be given to a child younger than 6 years old.

Get emergency medical help if you have any of these signs of an allergic reaction while taking dyphylline / guaifenesin: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

• pounding heartbeats or fluttering in your chest;

• rapid breathing, feeling short of breath;

• seizure (convulsions); or

• coughing up blood or vomit that looks like coffee grounds.

Common side effects may include:

• nausea, vomiting, stomach pain, diarrhea;

• headache;

• feeling restless or irritable;

• sleep problems (insomnia); or

• flushing (warmth, redness, or tingly feeling).

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

For healthcare professionals

Applies to dyphylline / guaifenesin: oral capsule, oral liquid, oral syrup, oral tablet.

Cardiovascular

• Frequency not reported: Cardiac palpitation^[Ref]

Nervous system

• Frequency not reported: Headache, CNS stimulation^[Ref]

Gastrointestinal

• Frequency not reported: Nausea^[Ref]

Further information

Dyphylline/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.

Some side effects may not be reported. You may report them to the FDA.

Medical Disclaimer