Mucinex Coupons & Prices

Guaifenesin Er

Mucinex is an over-the-counter drug that relieves chest congestion due to cold, flu, hay, fever, or allergies. The active ingredient in Mucinex, guaifenesin, is an expectorant that loosens mucus in the bronchial passageways so that they can be more easily cleared out. Mucinex is also the brand-name of a family of cold, flu, and allergy symptom relief products that combine guaifenesin with other cold and allergy relief medications. Currently, Mucinex costs $16.67 for 20, 600mg tablet extended release 12 hours and is available at most major retailers and online stores. SingleCare discounts can be used on over-the-counter products, like Mucinex, when prescribed by a physician. With a prescription, a SingleCare Mucinex coupon reduces the price of Mucinex to $14.09 for 20, 600mg tablet extended release 12 hours at major retailers, pharmacies, and supermarkets.

Set your location
Get alerted when the price
changes more than 10%

0.5 box20 tablets extended release 12 hourEdit

Unlock members-only prices.Free signup.

You have 0.00 in available bonus savings. Bonus savings will be automatically applied to your next eligible prescription fill.

Mucinex coupon at Kroger Pharmacy
$17.09
$ 14.09
$3 off with signupwith signup

Show this free card to your pharmacist.

Coupon card loading
Mucinex coupon at Harris Teeter Pharmacy
$17.09
$ 14.09
$3 off with signupwith signup

Save an extra $3 on any eligible prescription! Sign up for free

Members can save even more
and it's free to join

Mucinex coupon at Publix Pharmacy
$ 14.86
Mucinex coupon at Food Lion Pharmacy
$ 15.11
Mucinex coupon at Costco Pharmacy
$ 17.11
Mucinex coupon at Walgreens Pharmacy
$24.68
$ 21.68
$3 off with signupwith signup

About SingleCare Pricing

SingleCare’s prescription prices are based on multiple sources. The prices we publish are our best estimate, but we cannot guarantee that the price we display will exactly match the price you receive at the pharmacy. For an exact price, please contact your pharmacy and provide the BIN/GRP/PCN numbers shown on your SingleCare card.

Any SingleCare bonus savings, including the $3 signup bonus, may only be used once.

Prices updated: 12/20/2025

Members save the most

Save big on your prescriptions
with the free SingleCare app.
4.8 average rating
About Mucinex

Mucinex is an over-the-counter drug that relieves chest congestion due to cold, flu, hay, fever, or allergies. The active ingredient in Mucinex, guaifenesin, is an expectorant that loosens mucus in the bronchial passageways so that they can be more easily cleared out. Mucinex is also the brand-name of a family of cold, flu, and allergy symptom relief products that combine guaifenesin with other cold and allergy relief medications. Currently, Mucinex costs $16.67 for 20, 600mg tablet extended release 12 hours and is available at most major retailers and online stores. SingleCare discounts can be used on over-the-counter products, like Mucinex, when prescribed by a physician. With a prescription, a SingleCare Mucinex coupon reduces the price of Mucinex to $14.09 for 20, 600mg tablet extended release 12 hours at major retailers, pharmacies, and supermarkets.

Mucinex Price History & Information

Price History for Mucinex (Brand) & Guaifenesin Er (Generic)

20 count, tablet extended release 12 hour, 600mg

Our price history metrics are calculated from aggregate prescription data that we receive from all participating pharmacies. This chart updates daily to show new price fluctuations. If a data point is missing from the chart, it is because we do not have enough data to produce a reliable figure.

Average 1-Month Prices for Mucinex (Brand) & Guaifenesin Er (Generic)

20 count, tablet extended release 12 hour, 600mg
PharmacyMucinex Retail PriceGuaifenesin Er Retail PriceGuaifenesin Er SingleCare Price
Walmart$12.80$4.00$4.00
Walgreens$16.64$9.79$4.95
Kroger Pharmacy$12.40$16.09$11.40
Albertsons Pharmacy-$13.67$11.40

These prices are based on the last month of SingleCare prescription fill data by major pharmacy. This table updates daily to show the most accurate typical prices by pharmacies. If a data point is missing from the table, it is because we do not have enough data to produce a reliable figure.

About Mucinex

Mucinex is an over-the-counter drug that relieves chest congestion due to cold, flu, hay, fever, or allergies. The active ingredient in Mucinex, guaifenesin, is an expectorant that loosens mucus in the bronchial passageways so that they can be more easily cleared out. Mucinex is also the brand-name of a family of cold, flu, and allergy symptom relief products that combine guaifenesin with other cold and allergy relief medications. Currently, Mucinex costs $16.67 for 20, 600mg tablet extended release 12 hours and is available at most major retailers and online stores. SingleCare discounts can be used on over-the-counter products, like Mucinex, when prescribed by a physician. With a prescription, a SingleCare Mucinex coupon reduces the price of Mucinex to $14.09 for 20, 600mg tablet extended release 12 hours at major retailers, pharmacies, and supermarkets.

Mucinex FAQs

What is Mucinex?

Mucinex is a brand-name over-the-counter medication that temporarily relieves chest congestion due to cold, allergies, or flu. The active ingredient is guaifenesin, a widely-used expectorant that loosens mucus in the bronchial airways and the throat making it easier to clear these areas through coughing.

Mucinex is also the brand-name of an entire family of cold, flu, and allergy symptom-relief products. While all Mucinex products contain guaifenesin, many include other medications such as cough suppressants, nasal decongestants, and analgesics (acetaminophen).

Mucinex is taken as a tablet once every twelve hours. For Mucinex combination products, dosage, use, and format will vary.

What are the side effects of Mucinex?

The most common side effects of Mucinex include but are not limited to dizziness, drowsiness, headache, nausea, and vomiting.

Allergic reactions are rare but discontinue Mucinex if you notice any sign of an allergic reaction such as rash, hives, facial swelling, or trouble breathing.

This is not a complete list of side effects that may occur. Consult with your physician about any concerns you may have with side effects.

Is there a generic of Mucinex?

Mucinex is an over-the-counter brand-name medication. Generic Mucinex is available as Mucus Relief, Mucus, or Guaifenesin under well-known brand-names such as CVS, Up & Up, Equate, and Walgreens.

How much does Mucinex cost without insurance?

The price for Mucinex averages around $16.67 for 20, 600mg tablet extended release 12 hours, but this price may vary by store. With a SingleCare Mucinex discount card, a prescription for 20, 600mg tablet extended release 12 hours of Mucinex costs $14.09. For all your prescription needs, a SingleCare savings card can save you as much as 80% on your purchases.

How much does Mucinex cost with insurance?

Mucinex is an over-the-counter chest decongestant. Therefore, you will not find Mucinex covered by insurance plans as you would a prescription drug with a copay. You can use a free Mucinex coupon from SingleCare to save money on your prescription. Mucinex's price with a SingleCare discount card is only $14.09 for 20, 600mg tablet extended release 12 hours.

Does Medicare cover Mucinex and how much does it cost?

Because Mucinex is a low-priced chest decongestant, no Medicare prescription drug plan covers purchases of Mucinex. For Medicare patients with a prescription for Mucinex, you’ll pay as little as $14.09 for 20, 600mg tablet extended release 12 hours of Mucinex with a SingleCare savings card at participating pharmacies.

Where are Mucinex coupons from SingleCare accepted?

SingleCare is accepted at most national pharmacies and grocers, including the following:

Subscribe to our savings newsletter

Health education, drug info, wellness & more

By clicking 'Subscribe', I agree to SingleCare's Terms & Conditions.