tussin Dextromethorphan HBr, Guaifenesin 20 mg/20mL; 400 mg/20mL Solution — NDC 37808-639-26 (Billing 37808-0639-26)
This is a package of tussin Dextromethorphan HBr, Guaifenesin 20 mg/20mL; 400 mg/20mL Solution from H E B, marketed since Sep 2018 and currently FDA-listed. It is the main listing for this product, which comes in 2 package sizes.
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
Some supplements/herbs that may interact with Dextromethorphan HBr, Guaifenesin — tap one for details:
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 |
|---|---|---|---|---|
| 37808-0639-26 You're viewing this Main listing | 1 BOTTLE in 1 CARTON / 118 mL in 1 BOTTLE | 2018-09-25 | — | Active |
| 37808-0639-34 37808-639-34 | 1 BOTTLE in 1 CARTON / 237 mL in 1 BOTTLE | 2018-09-24 | — | Active |
Pack size FAQ
What quantity is in this package?
What NDC number is used to bill for this package of tussin Dextromethorphan HBr, Guaifenesin 20 mg/20mL; 400 mg/20mL Solution?
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
What it looks like
Where does this data come from?
- FDA label on DailyMed · label index refreshed Oct 1, 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.
💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.
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UNII XF417D3PSL
Anhydrous citric acid is a sour, crystalline powder derived from citric acid with water removed. In medicines, it acts as a buffer to control pH, adds tartness to improve taste, and helps tablets disintegrate.
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UNII K679OBS311
Carboxymethylcellulose sodium is a plant-derived thickening agent made from cellulose. In medicines, it acts as a binder to hold ingredients together, a disintegrant to help the tablet break apart, or a thickener in liquids.
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UNII H3R47K3TBD
FD&C Blue No. 1 is a synthetic blue dye approved for use in foods and medicines. It serves as a colorant to give the medication its distinctive appearance and help with product identification.
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UNII WZB9127XOA
A synthetic red dye used to color medications and make them easier to identify. It serves as a colorant in tablets, capsules, and liquid formulations.
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UNII PDC6A3C0OX
Glycerin is a clear, thick liquid derived from plant oils or fats. It acts as a humectant to retain moisture, a sweetener, and a solvent in medications.
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UNII L7T10EIP3A
A cooling compound from mint plants used as a flavoring agent and to create a fresh sensation in medicines. It helps mask bitter tastes and improve how the product feels in the mouth.
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UNII 3WJQ0SDW1A
Polyethylene glycol is a synthetic liquid or solid polymer used in medicines as a solvent, lubricant, and humectant. It helps dissolve active ingredients, reduces friction during manufacturing, and retains moisture in the final product.
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UNII 6DC9Q167V3
Propylene glycol is a clear liquid derived from petroleum or vegetable sources. It acts as a solvent, humectant, and preservative in medicines, helping dissolve active ingredients and maintain product stability.
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UNII OJ245FE5EU
Sodium benzoate is a salt derived from benzoic acid, a preservative. It's added to medicines to prevent growth of bacteria, fungi, and other microorganisms that could spoil the product.
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UNII 1Q73Q2JULR
Sodium citrate is a salt derived from citric acid. It works as a buffer to maintain the medicine's pH level and may also help improve taste or act as a preservative in the formulation.
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UNII 506T60A25R
Sorbitol is a natural sugar alcohol derived from glucose. It serves as a sweetener, humectant, and bulking agent in medications to improve taste and help maintain moisture in the product.
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UNII 96K6UQ3ZD4
Sucralose is a synthetic sweetener made from sugar. It's added to medicines to improve taste without adding calories, helping make bitter or unpleasant-tasting drugs easier to take.
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UNII 059QF0KO0R
Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.
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UNII TTV12P4NEE
Xanthan gum is a thickening and stabilizing ingredient made from fermented corn or other sugars. It's added to medicines to improve texture, prevent separation of liquids and solids, and help the product stay consistent.
14 inactive ingredients listed in the exact product block matched to this NDC.
Label-section wording can be broader than the structured product block and may mention additional formulation ingredients.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.- 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 • temporarily relieves cough due to minor throat and bronchial irritation as may occur with a cold • helps loosen phlegm (mucus) and thin bronchial secretions to drain bronchial tubes
⏱️ Dosage and Administration ▾
Directions • do not take more than 6 doses in any 24-hour period • measure only with dosing cup provided • keep dosing cup with product • mL = milliliter • this adult product is not intended for use in children under 12 years of age age dose adults and children 12 years and over 20 mL every 4 hours children under 12 years do not use
⚠️ Warnings ▾
Warnings
📦 Storage and Handling ▾
Other information • each 20 mL contains: sodium 13 mg • store at 20-25°C (68-77°F). Do not refrigerate.
🧪 Active Ingredient ▾
Active ingredients (in each 20 mL) Dextromethorphan HBr, USP 20 mg Guaifenesin, USP 400 mg
🧪 Inactive Ingredients ▾
Inactive ingredients acetic acid, anhydrous citric acid, carboxymethylcellulose sodium, FD&C blue no. 1, FD&C red no. 40, flavor, glycerin, menthol, polyethylene glycol, propylene glycol, purified water, sodium benzoate, sodium citrate, sorbitol solution, sucralose, xanthan gum
🎯 Purpose ▾
Purposes 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 • cough that occurs with too much phlegm (mucus) • cough that lasts or is chronic such as occurs with smoking, asthma, chronic bronchitis, or emphysema
📄 Stop Use and Ask a Doctor If ▾
Stop use and ask a doctor if cough lasts for more than 7 days, comes back, or is accompanied by fever, rash, or persistent headache. A persistent cough may be a sign 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 right away (1-800-222-1222).
📄 Questions or Comments ▾
Questions or comments? 1-800-719-9260
📄 Package Label / Principal Display Panel ▾
Package/Label Principal Display Panel Compare to Robitussin ® Maximum Strength Cough + Chest Congestion DM active ingredients See New Dosing Maximum Strength Tussin Dextromethorphan HBr/Cough Suppressant Guaifenesin/Expectorant Cough & Chest Congestion DM Non-Drowsy Adults/For Ages 12 & Over Relief of: Cough Mucus Chest Congestion 4 FL OZ (118 mL) tussin-image
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 | ✓ Available |
| Inactive ingredients (structured) | ✓ 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. |