Where to Find the Cheapest Mucinex Price

At the US pharmacies in our data, the lowest listed discount-card price for Guaifenesin Er is around $14.09. Prices vary by pharmacy, dosage, and pack size, so use the table above to compare specific options near you.

Yes — Cost Plus Drugs lists Guaifenesin Er at roughly $0.042 per unit, a published price with no membership card or coupon involved. See the three-price comparison above for how that stacks up against discount-card pharmacies.

Generic and brand-name pricing for Guaifenesin Er is broken out in the tables above where both exist in our data. Generic versions are typically the lower-cost option, but availability depends on the specific formulation and dosage.

Mucinex is a brand-name over-the-counter (OTC) medicine designed to provide temporary relief from chest congestion caused by colds, allergies, or influenza. Its primary ingredient, guaifenesin, is an expectorant that helps thin and loosen mucus in the bronchial tubes and throat, facilitating its removal through coughing. Beyond the single-ingredient product, the Mucinex family includes various formulations that combine guaifenesin with additional medications, such as cough suppressants (dextromethorphan), nasal decongestants (like phenylephrine), or pain relievers (acetaminophen). The standard Mucinex tablet is an extended-release formulation typically taken every 12 hours, while dosing and instructions vary for combination products.

Most people tolerate guaifenesin well, but possible side effects can include headache, dizziness, drowsiness, nausea, or vomiting. Serious allergic reactions are uncommon but require immediate medical attention; stop using Mucinex and seek help if you develop a rash, hives, facial swelling, or difficulty breathing. This is not an exhaustive list of potential adverse effects. Discuss any concerns about side effects or your suitability for this medication with your doctor or pharmacist.

Yes, the active ingredient in Mucinex, guaifenesin, is widely available as a generic OTC product. You can find it under store-brand labels like CVS Health Mucus Relief, Up & Up Mucus Relief, Equate Mucus Relief, or Walgreens Mucus Relief, as well as products simply labeled 'Guaifenesin.' These generics contain the same expectorant and are often more affordable than the brand-name version.