Mast Cell Stabilizer
An Established Pharmacologic Class (EPC) in the FDA NDC Directory: the class FDA records for a product in its PHARM_CLASSES field.
In the NADAC file of 2026-10-14
17 products in the NADAC file of 2026-10-14 have an NDC that FDA lists in this class, covering 7 nonproprietary names as FDA writes them. 5 of them have a Medicare figure on OpenBill.
Being in one class means FDA describes the drugs’ pharmacology the same way. It does not mean one can replace another; that is a question for your prescriber.
Prices per unit: CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · as of 2026-10-14 · retrieved 2026-10-17. Classes: FDA NDC Directory · ndctext.zip · as of 2026-10-16.
The products, with what pharmacies pay per unit
- ADVANCED EYE RELIEF 0.2% DROPS
- CROMOLYN 100 MG/5 ML ORAL CONC
- CROMOLYN 20 MG/2 ML NEB SOLN
- CROMOLYN 4% EYE DROPS
- FT EYE ALLERGY ITCH RLF 0.2%
- FT EYE ALLERGY ITCH-RED 0.1%
- GASTROCROM 100 MG/5 ML CONC
- GNP OLOPATADINE 0.1% EYE DROPS
- GNP OLOPATADINE 0.2% EYE DROP
- OLOPATADINE 665 MCG NASAL SPRY
- OLOPATADINE HCL 0.1% EYE DROP
- OLOPATADINE HCL 0.1% EYE DROPS
- OLOPATADINE HCL 0.2% EYE DROP
- PATADAY ONCE DAILY 0.2% DROPS
- PATADAY ONCE DAILY 0.7% DROPS
- PATADAY TWICE DAILY 0.1% DROPS
- RYALTRIS 665-25 MCG SPRAY
How to read these prices
OpenBill holds every page to these five rules, written by the project’s owner and quoted word for word:
- A price is a range to expect, never a quote.
- Medicare's price is not your price. Say so on every screen that shows it.
- State which dataset and which effective date produced every figure.
- If a source is stale or a file is empty, show that rather than a zero.
- Disclaimer footer: not medical advice, no warranty, other people's data can be wrong.