Product Information
SM ALLERGY (DIPHEN) 25 MG TAB is a generic product labeled by Strategic Sourcing Services LLC, priced at $0.0358 per EA under NDC 70677000301. Its NADAC has been published 355 times since Nov 14, 2018.
Strength
25 mg/1
Manufacturer
Strategic Sourcing Services LLCNDC
70677000301
Classification
Generic
Dosage Form
TABLET, FILM COATED
Route
ORAL
Last Updated
8/20/2025
Active Ingredients
DIPHENHYDRAMINE HYDROCHLORIDEApproval Type
OTC MONOGRAPH DRUG
FDA Application
M012On Market Since
3/2/1990
Pharmacological Classes
Price Statistics
The NADAC for SM ALLERGY (DIPHEN) 25 MG TAB has been published 355 times since Nov 14, 2018, and over the history we have for it it has risen 20.0%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.0358 per EA |
|---|---|
| All-time high | $0.0401 (Jul 12, 2023) |
| All-time low | $0.0299 (May 22, 2024) |
| 52-week high | $0.0358 |
| 52-week low | $0.0332 |
| Median price | $0.0353 |
| Average price | $0.0350 |
| Largest weekly change | -15.9% (May 22, 2024) |
| Weeks tracked | 355 |
| Tracking since | Nov 14, 2018 |
Generic Alternatives
The matcher finds 9 NADAC-published products sharing this drug's active ingredient, strength, and dosage form across 9 manufacturers (up to 10 shown below). Switching to the cheapest would cut per-unit acquisition cost by roughly 13% at current NADAC. These are candidates to verify clinically, not guaranteed substitutes — see our generic drug prices guide.
Frequently asked questions
What is the NADAC price of SM ALLERGY (DIPHEN) 25 MG TAB?
The current National Average Drug Acquisition Cost (NADAC) for SM ALLERGY (DIPHEN) 25 MG TAB, manufactured by Strategic Sourcing Services LLC, is $0.0358 per EA (NDC 70677000301), effective Aug 27, 2025.
How has the price of SM ALLERGY (DIPHEN) 25 MG TAB changed over time?
Over the history we have for it, the NADAC for SM ALLERGY (DIPHEN) 25 MG TAB has risen 20.0%. It has been tracked across 355 weekly CMS publications since Nov 14, 2018.
What are the highest and lowest recorded NADAC prices for SM ALLERGY (DIPHEN) 25 MG TAB?
Since Nov 14, 2018, the NADAC for SM ALLERGY (DIPHEN) 25 MG TAB has ranged from a low of $0.0299 (May 22, 2024) to a high of $0.0401 (Jul 12, 2023), with a median of $0.0353 per EA.
Are there cheaper alternatives to SM ALLERGY (DIPHEN) 25 MG TAB?
Yes. 9 NADAC-published products share the same active ingredient, strength, and dosage form. The lowest-priced option, DIPHENHYDRAMINE 25 MG CAPSULE, is $0.0311 per EA — about 13% below SM ALLERGY (DIPHEN) 25 MG TAB.
Who manufactures SM ALLERGY (DIPHEN) 25 MG TAB?
SM ALLERGY (DIPHEN) 25 MG TAB (NDC 70677000301) is labeled by Strategic Sourcing Services LLC, and CMS classifies it as a generic product.
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