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Pricing is calculated based on your prescription details.

Get Brantussin DM for as low as $9.92, which is 64% off the average retail price of $27.81 for the most common version, by using a GoodRx coupon.
You can save more on select medications with GoodRx Companion. See which medications are eligible.

Popular offers
GoodRx coupon prices last updated on 10/23/26.
*Prices subject to change without notice. Sales tax may apply and is not included.250+ medications are free, with hundreds more under $10. Plans start at $9.99/mo. (when paid yearly). Terms apply.
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 473ml of 2mg/ 15mg/ 7.5mg/ 5ml | 1 bottle | $27.81 | $16.92 |