TUSNEL-EX 100 MG/5 ML LIQUID
FDA nonproprietary name: guaifenesin
For 118 mL
Pharmacies pay
$2.71 filed
118 × $0.02294 per ML
CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17
Medicare
We don’t know yet
No Medicare reference price. Part D: OpenBill did not match this NDC to a usable Medicare Part D spending row. Either Part D has none for it, or the rows that share its name could not safely be tied to it (for example, they mix units, routes or release forms, or the drug is sold over the counter, which Part D does not cover). Part B: This NDC is not in the current quarter’s Medicare Part B NDC-HCPCS crosswalk, so it has no Part B payment limit.
The spread
We don’t know yet
There is no Medicare figure to compare with, so there is no spread.
Cost-plus estimate
$8.12 estimated
$2.71 + $0.41 (15%) + $5.00 fee per fill = $8.12
This is a model, not a price any pharmacy quoted. Shipping is not included. For a pack this cheap, the $5.00 fee is most of the estimate. How it is worked out
OpenBill calculation · nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17)
Open the interactive card Change the quantity, type what you were charged, and see every record in full.
What it is
TUSNEL-EX 100 MG/5 ML LIQUID is how the CMS NADAC file names this product. The FDA NDC Directory lists it as guaifenesin, under the trade name “Tusnel EX”.
FDA gives its dosage form as liquid and its route as oral.
The labeler, the company named on the label, is Llorens Pharmaceutical International Division, Inc.
FDA’s Established Pharmacologic Class for it is Expectorant.
The NADAC file of 2026-10-14 prices it under one NDC (National Drug Code), 54859-0507-04.
NADAC classes it as a generic drug (rate-setting class G), and marks it as sold over the counter.
What pharmacies pay
Pharmacies pay $2.71 for 118 mL (118 × $0.02294 per ML, rounded to the cent), by the CMS NADAC file of 2026-10-14; that price took effect on 2026-09-23. That is what pharmacies pay their suppliers, not what they charge you.
NADAC’s explanation codes for it: 1, calculated from the most recently completed pharmacy survey; 5, calculated based on package size.
What NADAC measures · NADAC explanation codes
The NDC
- 54859-0507-04 · Llorens Pharmaceutical International Division, Inc. · $0.02294 per ML · eff. 2026-09-23 filed
Other strengths, forms and brands
28 other products in the NADAC file share the FDA nonproprietary name guaifenesin with TUSNEL-EX 100 MG/5 ML LIQUID. The 23 below share a strength or dosage form with it first; search OpenBill for the rest.
| Product | Pharmacies pay per unit | Medicare per unit |
|---|---|---|
| CHEST CONGEST RLF 400 MG TAB | $0.06559 per EA filed | We don’t know yet |
| CHEST CONGESTION RELIEF SOLN | $0.01103 per ML filed | We don’t know yet |
| FT ADULT TUSSIN 200 MG/10 ML | $0.01819 to $0.02294 per ML filed | We don’t know yet |
| FT CHEST CONGEST 400 MG CAPLET | $0.06559 per EA filed | We don’t know yet |
| FT MUCUS RELIEF ER 1,200 MG TB | $0.43164 per EA filed | We don’t know yet |
| FT MUCUS RELIEF ER 600 MG TAB | $0.28398 per EA filed | We don’t know yet |
| GNP MUCUS ER 1,200 MG TABLET | $0.43164 per EA filed | We don’t know yet |
| GNP MUCUS ER 600 MG TABLET | $0.28398 per EA filed | We don’t know yet |
| GNP MUCUS RELIEF 400 MG TABLET | $0.06559 per EA filed | We don’t know yet |
| GNP TUSSIN MUCUS-CON 200 MG/10 | $0.01819 to $0.02294 per ML filed | We don’t know yet |
| GS MUCUS ER 1,200 MG TABLET | $0.43164 per EA filed | We don’t know yet |
| GS MUCUS ER 600 MG CAPLET | $0.28398 per EA filed | We don’t know yet |
| GS MUCUS ER 600 MG TABLET | $0.28398 per EA filed | We don’t know yet |
| GUAIFENESIN 100 MG/5 ML SOLN | $0.01103 per ML filed | We don’t know yet |
| GUAIFENESIN 200 MG TABLET | $0.03234 per EA filed | We don’t know yet |
| GUAIFENESIN 400 MG TABLET | $0.06559 per EA filed | We don’t know yet |
| GUAIFENESIN ER 1,200 MG TABLET | $0.43164 per EA filed | We don’t know yet |
| GUAIFENESIN ER 600 MG TABLET | $0.28398 per EA filed | We don’t know yet |
| MUCOLYTE 100 MG/5 ML LIQUID | $0.01103 to $0.02294 per ML filed | We don’t know yet |
| MUCOSA 400 MG TABLET | $0.06559 per EA filed | We don’t know yet |
| MUCUS-CHEST CONG 200 MG/10 ML | $0.02294 per ML filed | We don’t know yet |
| QC ADULT TUSSIN 200 MG/10 ML | $0.02294 per ML filed | We don’t know yet |
| TUSNEL-EX 100 MG/5 ML LIQUID this page | $0.02294 per ML filed | We don’t know yet |
| TUSSIN MUCUS-CONG 200 MG/10 ML | $0.01103 to $0.02294 per ML filed | We don’t know yet |
CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17
Compared with its class
Its NADAC price is $0.02294 per ML filed.
Of the 38 other products in FDA’s Expectorant class priced per ML, 12 have a higher middle NADAC price and 24 a lower one; 2 have the same. The one in the middle is ROBAFEN DM 200-20 MG/20 ML LIQ, at $0.02069 per ML filed (eff. 2026-09-23).
Prices are compared per unit, whatever the strength or dose, and a class is not a list of substitutes.
CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17
What Medicare paid
We don’t know yet; the card above says why.
Which Medicare figure OpenBill compares · How Part D is matched · How Part B is matched
What to ask at the counter
None of these figures is your price: what you pay depends on your pharmacy, your insurance, coupons and discounts.
- What is your cash price for 118 mL? Is it lower than what I would pay through my insurance?
- It is sold over the counter, so shelf prices vary from store to store: what does it cost per unit here?
- How much is in the package I am getting? This page uses 118 mL; your package may hold a different amount.
- These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.
Questions
- Why does this page start at 118 mL?
- NADAC prices this product per ML. The FDA NDC Directory’s package description gives 118 mL in one package for this product’s NDC (“118 mL in 1 BOTTLE (54859-507-04)”), so the card starts at one package: 118 ML. Change it to match your prescription.
Related pages
Its pharmacologic class
Related in the same class
- CHEST CONG RLF DM 400-20 MG TB
- CHEST CONG RLF PE 400-10 MG TB
- CHEST CONGESTION RELIEF DM SYR
- CHILD'S MULTI-SYMPTOM COLD LIQ
- CODEINE-GUAIFEN 10-100 MG/5 ML