Mucus Relief DM Maximum Strength dextromethorphan hydrobromide, guaifenesin 20 mg/20mL; 400 mg/20mL Liquid, 177 mL — NDC 0363-0505-06 (Billing 00363-0505-06)
This is a package of 177 mL of Mucus Relief DM Maximum Strength dextromethorphan hydrobromide, guaifenesin 20 mg/20mL; 400 mg/20mL Liquid from Walgreens, no longer marketed (first marketed Aug 2017), no longer in the FDA NDC Directory, this package's marketing ended Jun 2026. It is this product's only package size.
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
- RxCUI (RxNorm): 1020138
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
RxNorm drug class
This medicine belongs to the Uncompetitive N-methyl-D-aspartate Receptor Antagonist class.
Where does this data come from?
- RxClass (NLM) · catalog refreshed Oct 1, 2026
Clinical
Dextromethorphan is used to temporarily relieve cough caused by the common cold, the flu, or other conditions. Dextromethorphan will relieve a cough but will not treat the cause of the cough or speed recovery. Dextromethorphan is in a class of medications called antitussives. It works by decreasing activity in the part of the brain that causes coughing.
Read the full MedlinePlus article ↗- It helps loosen mucus and makes coughs more productive. It also temporarily eases cough from minor throat and bronchial irritation, like with a cold or inhaled irritants.
- Swallow them whole with a full glass of water. Don’t crush, chew or break them. You can take them with or without food, about every 12 hours as your label directs.
- How do I take the extended-release tablets?
- The extended-release tablets are not for children under 12. Some liquid products are made for children, so check that product’s label and ask me if you’re unsure.
Patient education
Supplement & herbal interactions
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
Ask a licensed pharmacist directly — free, answered by our team.
Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per mL | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
Where does this data come from?
- CMS NADAC weekly file
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · refreshed Oct 2, 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 00363-0505-06 You're viewing this Main listing | 177 mL in 1 BOTTLE | 2017-08-31 | Jun 28, 2026 | Discontinued by firm |
Therapeutic equivalents
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Sep 3, 2026
- CMS NADAC weekly file
Availability & generic status
We did not find an FDA-approved generic match for this exact strength, form and route.
Where does this data come from?
- FDA Orange Book · refreshed Sep 3, 2026
Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
Where does this data come from?
IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.- FDA label on DailyMed · label index refreshed Oct 1, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
Manufacturer & labeler
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
FDA label — Drug Facts FDA SPL
🎯 Indications and Usage ▾
Uses helps loosen phelgm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive temporarily relieves cough due to minor throat and bronchial irration as may occur with the common cold or inhaled irritants the intensity of coughing the impulse to cough to help you get to sleep
⏱️ Dosage and Administration ▾
Directions do not take more than 6 doses in any 24-hours period measure only with dosing cup provided. Do not use any other dosing provided keep dosing cup with product dose as follows or as directed by a doctor mL = milliliter adults and children 12 years of age and older: 20 mL every 4 hours children under 12 years of age: do not use
⚠️ Warnings ▾
Warnings Do not use if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product. Ask a doctor before use if you have persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis or emphysema cough that occurs with too much phlegm (mucus) When using this product do not use more than directed Stop use and ask a doctor if cough lasts more than 7 days, comes back, or occurs with fever, rash or persistent headache that lasts.These could be signs of a serious condition.
If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) right away.
📦 Storage and Handling ▾
Other information each 20 mL contains : sodium 20 mg store between 20-25ºC (68-77ºF). do not refrigerate
🧪 Active Ingredient ▾
Active ingredients (in each 20 mL) Dextromethorphan HBr 20 mg Guaifenesin 400 mg
🧪 Inactive Ingredients ▾
Inactive ingredients citric acid, disodium EDTA, FD&C red 40, flavors, glycerin, propyl gallate propylene glycol, purified water,sodium benzoate,sodium citrate, sorbitol, sucralose xanthan gum
🎯 Purpose ▾
Purpose Cough suppressant Expectorant
📄 Do Not Use ▾
Do not use if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product.
📄 Ask a Doctor Before Use If ▾
Ask a doctor before use if you have persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis or emphysema cough that occurs with too much phlegm (mucus)
📄 When Using This Product ▾
When using this product do not use more than directed
📄 Stop Use and Ask a Doctor If ▾
Stop use and ask a doctor if cough lasts more than 7 days, comes back, or occurs with fever, rash or persistent headache that lasts.These could be signs of a serious condition.
🤰 If Pregnant or Breast-Feeding ▾
If pregnant or breast-feeding, ask a health professional before use.
📄 Keep Out of Reach of Children ▾
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) right away.
📄 Questions or Comments ▾
Questions or comments? Call 1-877-753-723-3929 Monday-Friday 9AM-5PM EST
📄 Package Label / Principal Display Panel ▾
Principal Display Panel Compare to the active ingredients in Maximum Strength Mucinex® Fast-Max® DM Max†† DM MAX DEXTROMETHORPHAN HBr / COUGH SUPPRESSANT GUAIFENESIN / EXPECTORANT MAXIMUM STRENGTH Relieves chest congestion & cough Thin & loosen mucus Ages 12 & over 4-hour dosing FL OZ (mL) ††This product is not manufactured or distributed by RB Health (US) LLC, owner of the registered trademarks Mucinex® Fast-Max® TAMPER EVIDENT: DO NOT USE IF PRINTED SAFETY SEAL AROUND OR UNDER CAP IS BROKEN OR MISSING. DISTRIBUTED BY: WALGREEN CO 200 WILMOT RD., DEERFIELD, IL, 60015 walgreens.com
Package Label WALGREENS Mucus Relief DM Maximum Strength Dextromethorphan HBr 20 mg, Guaifenesin 400 mg
About this NDC listing & data coverage
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | — Not published for this NDC No photo available yet for this listing. |
| Inactive ingredients (structured) | — Not published for this NDC The labeler did not submit a structured excipient list, or no SPL is available. |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope. |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |