Indications
- Medication used for temporary relief of coughs from common cold, bronchitis, and other breathing illnesses
- Not recommended for ongoing cough from smoking or long-term breathing problems without doctor’s direction
- Guaifenesin is an expectorant that thins and loosens mucus, clearing congestion and easing breathing
Dosage and administration
- Take the medication by mouth with or without food, as directed by the doctor, usually every 12 hours with a full glass of water
- If self-treating, follow all directions on the product package; consult doctor or pharmacist for questions
- Dosage based on age, medical condition, and treatment response; do not exceed 2400 milligrams in 24 hours
- Do not crush or chew tablets; swallow them whole to avoid releasing the drug at once and increasing side effect risk
- Drink plenty of fluids to help break up mucus and clear congestion
- Notify the doctor if the condition returns, or if accompanied by persistent headache, fever, severe sore throat, rash, or worsening after 7 days
- Seek medical help immediately if there’s suspicion of a serious medical problem
Side effects
- Possible side effects include nausea or vomiting; inform doctor or pharmacist if they persist or worsen
- If directed by the doctor to use the medication, the benefits are deemed greater than the risk of side effects
- Serious allergic reactions are rare; seek immediate medical help for symptoms like rash, swelling, severe dizziness, or difficulty breathing
- Not an exhaustive list of side effects; contact doctor or pharmacist for other observed effects
Precautions
- Inform your doctor or pharmacist about any allergies to guaifenesin or other substances before taking it
- Check with your pharmacist about inactive ingredients in the product that may cause allergic reactions
- Share your medical history, especially breathing problems like emphysema, chronic bronchitis, asthma, or cough with blood or large amounts of mucus, with your doctor or pharmacist before using the medication
- Before surgery, inform your doctor or dentist about all products you use, including prescription drugs, nonprescription drugs, and herbal products
- Use guaifenesin during pregnancy only if clearly needed; discuss risks and benefits with your doctor
- Consult your doctor before breastfeeding, as it is unknown if guaifenesin passes into breast milk
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