Product Information
GNP NIGHTTIME SLEEP AID 50 MG is a generic product labeled by AmerisourceBergen, priced at $0.1114 per EA under NDC 46122069572. Its NADAC has been published 223 times since Jun 29, 2022.
Strength
50 mg/1
Manufacturer
AmerisourceBergenNDC
46122069572
Classification
Generic
Dosage Form
CAPSULE, LIQUID FILLED
Route
ORAL
Effective Date
9/23/2026
Active Ingredients
DIPHENHYDRAMINE HYDROCHLORIDEApproval Type
OTC MONOGRAPH DRUG
FDA Application
M010On Market Since
7/15/2021
Pharmacological Classes
Price Statistics
The NADAC for GNP NIGHTTIME SLEEP AID 50 MG has been published 223 times since Jun 29, 2022, and over the history we have for it it has risen 19.0%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.1114 per EA |
|---|---|
| All-time high | $0.1204 (Aug 12, 2026) |
| All-time low | $0.0662 (Jul 19, 2023) |
| 52-week high | $0.1204 |
| 52-week low | $0.0853 |
| Median price | $0.0936 |
| Average price | $0.0938 |
| Largest weekly change | +46.9% (Dec 20, 2023) |
| Weeks tracked | 223 |
| Tracking since | Jun 29, 2022 |
Generic Alternatives
The matcher finds 4 manufacturers offering a NADAC-published product with this drug's active ingredient and strength in a comparable dosage form (cheapest from each manufacturer, up to 10 shown below). Switching to the cheapest would cut per-unit acquisition cost by roughly 82% at current NADAC. These are candidates to verify clinically, not guaranteed substitutes — see our generic drug prices guide.
Related Drugs
Same classification
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Manufacturer
AmerisourceBergen manufacturer profile
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Drug market
Diphenhydramine HCl market comparison
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Therapeutic class
Histamine-1 Receptor Antagonist class view
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Trend hub
Latest market trends
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Guide
Understanding NADAC pricing
Use the explainer when you need context on how CMS publishes NADAC and how to interpret the number on this page.
Frequently asked questions
What is the NADAC price of GNP NIGHTTIME SLEEP AID 50 MG?
The current National Average Drug Acquisition Cost (NADAC) for GNP NIGHTTIME SLEEP AID 50 MG, manufactured by AmerisourceBergen, is $0.1114 per EA (NDC 46122069572), effective Sep 30, 2026.
How has the price of GNP NIGHTTIME SLEEP AID 50 MG changed over time?
Over the history we have for it, the NADAC for GNP NIGHTTIME SLEEP AID 50 MG has risen 19.0%. It has been tracked across 223 weekly CMS publications since Jun 29, 2022.
What are the highest and lowest recorded NADAC prices for GNP NIGHTTIME SLEEP AID 50 MG?
Since Jun 29, 2022, the NADAC for GNP NIGHTTIME SLEEP AID 50 MG has ranged from a low of $0.0662 (Jul 19, 2023) to a high of $0.1204 (Aug 12, 2026), with a median of $0.0936 per EA.
Are there cheaper alternatives to GNP NIGHTTIME SLEEP AID 50 MG?
Yes. 4 manufacturers publish a NADAC-priced product with the same active ingredient and strength in a comparable dosage form. The lowest-priced option, PHARBEDRYL 50 MG CAPSULE, is $0.0197 per EA — about 82% below GNP NIGHTTIME SLEEP AID 50 MG.
Who manufactures GNP NIGHTTIME SLEEP AID 50 MG?
GNP NIGHTTIME SLEEP AID 50 MG (NDC 46122069572) is labeled by AmerisourceBergen, and CMS classifies it as a generic product.