GUAIFENESIN DM GUAIFENESIN and DEXTROMETHORPHAN 100 mg/5mL; 10 mg/5mL Syrup
🆔 Identity & classification
Where does this data come from?
🏷️ RxNorm drug class
This medicine belongs to the Uncompetitive N-methyl-D-aspartate Receptor Antagonist class.
Where does this data come from?
🏭 Manufacturer & labeler
Where does this data come from?
🩺 Clinical
- The two ingredients tackle your symptoms from different angles. Guaifenesin is an expectorant — it helps thin and loosen the mucus in your chest so you can cough it up more easily....
- What exactly does this combination do — why are two ingredients needed?
- It depends on which antidepressant you're taking. If it's a type called an MAOI — which includes certain older antidepressants and some medications for Parkinson's disease — you sh...
- Can I take this if I'm on an antidepressant?
Patient education
Supplement & herbal interactions
Where does this data come from?
Ask a licensed pharmacist directly — free, answered by our team.
💊 What it looks like
Where does this data come from?
🧪 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 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 SB8ZUX40TY
Saccharin sodium is an artificial sweetener made from saccharin salt. It's added to medicines to improve taste, especially in liquid formulations for children or bitter drugs.
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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 C151H8M554
A natural sugar derived from sugar cane or sugar beets. It's used as a sweetener, filler, and binder to improve taste, add bulk, and help hold tablet or capsule ingredients together.
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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.
9 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.Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
💲 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 | $0.1372 | $68.60 / 500 ml |
| 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?
🔁 Therapeutic equivalents
Where does this data come from?
⏳ 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?
🗺️ Medicaid utilization & spend
💊 Medicaid utilization by pack size
🔬 Reported adverse events (FAERS)
Top reported reactions
Age at onset
Reporter sex
Serious outcomes
Where does this data come from?
📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 00121-0638-00 You're viewing this | 10 TRAY in 1 CASE (0121-0638-00) / 10 CUP, UNIT-DOSE in 1 TRAY / 5 mL in 1 CUP, UNIT-DOSE (0121-0638-05) | 1992-07-01 | Active |
| 00121-0638-04 | 118 mL in 1 BOTTLE (0121-0638-04) | 1992-07-01 | Active |
| 00121-0638-08 | 237 mL in 1 BOTTLE (0121-0638-08) | 1992-07-01 | Active |
| 00121-0638-16 | 473 mL in 1 BOTTLE (0121-0638-16) | 1992-07-01 | Active |
In Medicaid, this is the most-dispensed pack of this product — about 100% of fills over the last four reported quarters. See all packs ↓
Pack size FAQ
What quantity is in NDC 00121-0638-00?
What NDC number is used to bill for this package of GUAIFENESIN DM GUAIFENESIN and DEXTROMETHORPHAN 100 mg/5mL; 10 mg/5mL Syrup?
🧭 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) | ✓ Available |
Questions about this listing
Is this NDC FDA-approved?
Why is there no price listed?
Is the NDC printed on the package the same as the 11-digit billing NDC?
What do the three segments of this NDC mean?
Is this package still being marketed?
Does this product come in other package sizes?
Who lists this product with the FDA?
Do I need a prescription for this product?
Where does this data come from?
📄 FDA label — Drug Facts FDA SPL
🎯 Indications and Usage ▾
USES helps loosen phlegm (mucus) and thin bronchial secretions to make coughs more productive temporarily relieves cough due to minor throat and bronchial irritation as may occur with a cold
⏱️ Dosage and Administration ▾
DIRECTIONS: Follow dosage below or use as directed by a physician. do not take more than 6 doses in any 24-hour period. age dose adults and children 12 years and over 10 mL (2 teaspoonfuls) every 4 hours children 6 years to under 12 years 5 mL (1 teaspoonful) every 4 hours children 2 years to under 6 years 2.5 mL (1/2 teaspoonful) every 4 hours children under 2 years ask a doctor
⚠️ 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 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 cough lasts more than 7 days, comes back, or is accompanied by fever, rash, or persistent headache.
These could be signs of a serious condition. you are hypersensitive to any of the ingredients. 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 right away.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED: Guaifenesin Syrup and Dextromethorphan is a red, cherry flavored syrup supplied in the following oral dosage forms: NDC 0121-0638-04: 4 fl oz (118 mL) bottle NDC 0121-0638-08: 8 fl oz (237 mL) bottle NDC 0121-0638-16: 16 fl oz (473 mL) bottle NDC 01210638-05: 5 mL unit dose cup NDC 0121-0638-00: Case contains 100 unit dose cups of 5 mL (0121-0638-05) packaged in 10 trays of 10 unit dose cups each. NDC 0121-1276-10: 10 mL unit dose cup NDC 0121-1276-00: Case contains 100 unit dose cups of 10 mL (0121-1276-10) packaged in 10 trays of 10 unit dose cups each.
📦 Storage and Handling ▾
STORAGE: Keep tightly closed. Store at controlled room temperature, 20°-25°C (68°-77°F) [See USP]. Protect from light.
🧪 Active Ingredient ▾
DESCRIPTION Each 5 mL (1 teaspoonful) contains: Guaifenesin 100 mg Dextromethorphan Hydrobromide 10 mg Inactive Ingredients: Citric acid, FD&C Red No. 40, flavoring, glycerin, menthol, purified water, sodium benzoate, sodium citrate, sodium saccharin, and sucrose. Sodium Content: 4 mg/5 mL
🧪 Inactive Ingredients ▾
Inactive Ingredients: Citric acid, FD&C Red No. 40, flavoring, glycerin, menthol, purified water, sodium benzoate, sodium citrate, sodium saccharin, and sucrose. Sodium Content: 4 mg/5 mL
🎯 Purpose ▾
Non-Narcotic, Alcohol Free Expectorant/Cough Suppressant