GNP LUBRICANT 0.5% EYE DROP
FDA nonproprietary name: carboxymethylcellulose sodium
For 1 unit (EA)
Pharmacies pay
$0.23 filed
1 × $0.22679 per EA
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
$5.26 estimated
$0.23 + $0.03 (15%) + $5.00 fee per fill = $5.26
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
GNP LUBRICANT 0.5% EYE DROP is how the CMS NADAC file names this product. The FDA NDC Directory lists it as carboxymethylcellulose sodium, under the trade name “Good Neighbor Pharmacy Lubricant Eye Drops”.
FDA gives its dosage form as solution/ drops and its route as ophthalmic.
The labeler, the company named on the label, is Amerisource Bergen Drug Corp.
FDA lists no Established Pharmacologic Class for it.
The NADAC file of 2026-10-14 prices it under one NDC (National Drug Code), 46122-0756-56.
NADAC classes it as a generic drug (rate-setting class G), and marks it as sold over the counter.
What pharmacies pay
Pharmacies pay $0.23 for 1 unit (EA) (1 × $0.22679 per EA, 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
- 46122-0756-56 · Amerisource Bergen Drug Corp. · $0.22679 per EA · eff. 2026-09-23 filed
Other strengths, forms and brands
8 other products in the NADAC file share the FDA nonproprietary name carboxymethylcellulose sodium with GNP LUBRICANT 0.5% EYE DROP.
| Product | Pharmacies pay per unit | Medicare per unit |
|---|---|---|
| CARBOXYMETHYLCELL 0.5% EYE DRP | $0.16275 to $0.2548 per EA; $0.28017 to $0.32365 per ML filed | We don’t know yet |
| FT LUBRICANT 0.5% EYE DROP | $0.22679 per EA filed | We don’t know yet |
| GNP LUBRICANT 0.5% EYE DROP this page | $0.22679 per EA filed | We don’t know yet |
| LUBRICANT 0.5% EYE DROP | $0.22679 to $0.2548 per EA; $0.28017 to $0.32365 per ML filed | We don’t know yet |
| LUBRICANT 0.5% EYE DROPS | $0.16275 to $0.22679 per EA filed | We don’t know yet |
| REFRESH CELLUVISC 1% EYE GEL | $0.36652 per EA filed | We don’t know yet |
| REFRESH LIQUIGEL 1% EYE DROP | $0.57805 per ML filed | We don’t know yet |
| REFRESH PLUS 0.5% EYE DROPS | $0.25955 to $0.29683 per EA filed | We don’t know yet |
| REFRESH TEARS 0.5% EYE DROP | $0.41169 to $0.55781 per ML filed | We don’t know yet |
CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. between 2026-01-21 and 2026-09-23 (4 dates) · 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 1 unit (EA)? 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?
- 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 1 unit (EA)?
- NADAC prices this product per EA, and the FDA NDC Directory lists its NDC as dosage form “SOLUTION/ DROPS” with route “OPHTHALMIC”. Only a tablet, capsule, lozenge or troche with route “ORAL”, or a tablet or film with route “SUBLINGUAL” or “BUCCAL”, starts at 30, and this is not one. NADAC’s EA for it may be a whole package (such as a kit, pen, syringe, vial or inhaler) or one dose inside it, and the files do not say which. So the card starts at 1 unit (EA) rather than guess how many make up a fill; change it to match your prescription.