Guaifenesin ER Coupons & Prices

Mucus Relief

Guaifenesin ER is an expectorant that works by loosening congestion in your chest and throat. This generic cough medicine is used to treat coughs caused by the common cold or flu. Guaifenesin ER is also available under the brand name Mucinex and Robitussin Mucus + Chest Congestion. You can purchase Guaifenesin ER at a retail price of about $22.00 for 20, 600mg tablet extended release 12 hours. If you are looking to save money on your Guaifenesin ER price, you could use a SingleCare Guaifenesin ER coupon when you refill your Guaifenesin ER prescription. With our free coupon you pay as little as $14.09 for 20, 600mg tablet extended release 12 hours of Guaifenesin ER at your local pharmacy.

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

Show this free card to your pharmacist.

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Guaifenesin ER coupon at Harris Teeter Pharmacy
$17.09
$ 14.09
$3 off with signupwith signup

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Guaifenesin ER coupon at Publix Pharmacy
$ 14.86
Guaifenesin ER coupon at Food Lion Pharmacy
$ 15.11
Guaifenesin ER coupon at Costco Pharmacy
$ 17.11
Guaifenesin ER coupon at Walgreens Pharmacy
$24.89
$ 21.89
$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: 11/02/2025

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About Guaifenesin ER

Guaifenesin ER is an expectorant that works by loosening congestion in your chest and throat. This generic cough medicine is used to treat coughs caused by the common cold or flu. Guaifenesin ER is also available under the brand name Mucinex and Robitussin Mucus + Chest Congestion. You can purchase Guaifenesin ER at a retail price of about $22.00 for 20, 600mg tablet extended release 12 hours. If you are looking to save money on your Guaifenesin ER price, you could use a SingleCare Guaifenesin ER coupon when you refill your Guaifenesin ER prescription. With our free coupon you pay as little as $14.09 for 20, 600mg tablet extended release 12 hours of Guaifenesin ER at your local pharmacy.

Guaifenesin ER Price History & Information

Price History for Guaifenesin Er (Generic) & Mucus Relief (Branded 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 Guaifenesin Er (Generic) & Mucus Relief (Branded Generic)

20 count, tablet extended release 12 hour, 600mg
PharmacyMucus Relief Retail PriceGuaifenesin Er Retail PriceGuaifenesin Er SingleCare Price
Walmart---
Walgreens-$13.89$6.20
Kroger Pharmacy$9.40$16.80$16.05
Albertsons Pharmacy$21.40--

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 Guaifenesin ER

Guaifenesin ER is an expectorant that works by loosening congestion in your chest and throat. This generic cough medicine is used to treat coughs caused by the common cold or flu. Guaifenesin ER is also available under the brand name Mucinex and Robitussin Mucus + Chest Congestion. You can purchase Guaifenesin ER at a retail price of about $22.00 for 20, 600mg tablet extended release 12 hours. If you are looking to save money on your Guaifenesin ER price, you could use a SingleCare Guaifenesin ER coupon when you refill your Guaifenesin ER prescription. With our free coupon you pay as little as $14.09 for 20, 600mg tablet extended release 12 hours of Guaifenesin ER at your local pharmacy.

Guaifenesin ER FAQs

How much does Guaifenesin ER cost without insurance?

Guaifenesin ER may cost around $22.00 for 20, 600mg tablet extended release 12 hours or even more if you do not have insurance coverage. Using a SingleCare Guaifenesin ER discount card can help you to save on your prescription medication and pay $14.09 for 20, 600mg tablet extended release 12 hours when you use our discount card at neighborhood pharmacies such as CVS Pharmacy, Walmart Pharmacy, Kroger, and Walgreens.

How much does Guaifenesin ER cost with insurance?

The average cost of Guaifenesin ER with insurance tends to vary based on the type of health insurance plan you are enrolled in and the level of benefits you are entitled to. You may need to contact your insurance provider directly to get their exact cost of Guaifenesin ER and your copay. To save money on your Guaifenesin ER cost you can use a SingleCare Guaifenesin ER coupon and redeem instant savings. With our Guaifenesin ER coupon card, you pay $14.09 for 20, 600mg tablet extended release 12 hours for your Guaifenesin ER refills at SingleCare participating pharmacies everywhere.

Does Medicare cover Guaifenesin ER and how much does it cost?

Guaifenesin ER is not currently covered by any Medicare plans. To save on your out-of-pocket cost for Guaifenesin ER by using a Guaifenesin ER savings card with your purchase. With our prescription savings card, you pay our lowest price is $14.09 for 20, 600mg tablet extended release 12 hours for your Guaifenesin ER prescription at the pharmacy counter.

What is the brand name of Guaifenesin ER?

Guaifenesin ER is a generic medication that is manufactured by Akorn, Inc.and Amneal Pharmaceuticals. LLC in the United States. You can also purchase Guaifenesin ER under the brand names Mucinex and Robitussin Mucus + Chest Congestion.

What is Guaifenesin ER?

Guaifenesin ER is an expectorant that works by loosening congestion in your chest and throat. This generic cough medicine is used to treat coughs caused by the common cold or flu. Guaifenesin ER should not be used to treat chronic cough or cough associated with smoking, chronic bronchitis, or emphysema. Do not give Guaifenesin ER to a child without medical advice.

Do not use Guaifenesin ER if you are allergic to it.

Before using this medication tell your doctor about any other medical conditions you may have or if you have a history of kidney or liver disease, phenylketonuria, or if you are pregnant or breastfeeding. If you are using other treatments you should also tell your healthcare providers including all prescription drugs, over-the-counter medicines, and supplements. If you are taking other medications that include Guaifenesin ER you also need to tell your healthcare provider.

Only use Guaifenesin ER as directed by your doctor. Do not use larger or smaller amounts of Guaifenesin ER or for longer than recommended. Cough medicines like Guaifenesin ER are usually taken only for a short time until your symptoms clear up. Guaifenesin ER can be taken with or without food. You should also drink extra fluids to help loosen the congestion and lubricate your throat while you are taking Guaifenesin ER.

Keep Guaifenesin ER out of the reach of children and pets.

What are the side effects of Guaifenesin ER?

Common side effects of Guaifenesin ER include dizziness, headache, sleepiness, and nausea or vomiting.

Guaifenesin ER may also impair your thinking or reactions, therefore, you should be extremely cautious if you will be driving or doing any other actions that require you to be alert.

This is not a complete list of the possible side effects of Guaifenesin ER and others may occur. For additional information about the risks associated with using Guaifenesin ER, you can talk to your doctor. You can also report any adverse effects to the FDA.

Where are Guaifenesin ER coupons from SingleCare accepted?

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

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