Product Information
CALCIUM ANTACID 500 MG CHW TAB is a generic product labeled by Rugby Laboratories, priced at $0.0175 per EA under NDC 00536104815. Its NADAC has been published 589 times since Mar 18, 2015.
Strength
500 mg/1
Manufacturer
Rugby LaboratoriesNDC
00536104815
Classification
Generic
Dosage Form
TABLET, CHEWABLE
Route
ORAL
Last Updated
6/17/2026
Active Ingredients
CALCIUM CARBONATEApproval Type
OTC MONOGRAPH DRUG
FDA Application
M001On Market Since
12/24/2012
Pharmacological Classes
Price Statistics
The NADAC for CALCIUM ANTACID 500 MG CHW TAB has been published 589 times since Mar 18, 2015, and over the history we have for it it has risen 5.2%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.0175 per EA |
|---|---|
| All-time high | $0.0175 (Apr 16, 2025) |
| All-time low | $0.0121 (Jul 18, 2018) |
| 52-week high | $0.0175 |
| 52-week low | $0.0168 |
| Median price | $0.0142 |
| Average price | $0.0146 |
| Largest weekly change | +18.7% (Feb 19, 2020) |
| Weeks tracked | 589 |
| Tracking since | Mar 18, 2015 |
Generic Alternatives
The matcher finds 3 NADAC-published products sharing this drug's active ingredient, strength, and dosage form across 3 manufacturers (up to 10 shown below). Switching to the cheapest would cut per-unit acquisition cost by roughly 24% 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 CALCIUM ANTACID 500 MG CHW TAB?
The current National Average Drug Acquisition Cost (NADAC) for CALCIUM ANTACID 500 MG CHW TAB, manufactured by Rugby Laboratories, is $0.0175 per EA (NDC 00536104815), effective Jun 24, 2026.
How has the price of CALCIUM ANTACID 500 MG CHW TAB changed over time?
Over the history we have for it, the NADAC for CALCIUM ANTACID 500 MG CHW TAB has risen 5.2%. It has been tracked across 589 weekly CMS publications since Mar 18, 2015.
What are the highest and lowest recorded NADAC prices for CALCIUM ANTACID 500 MG CHW TAB?
Since Mar 18, 2015, the NADAC for CALCIUM ANTACID 500 MG CHW TAB has ranged from a low of $0.0121 (Jul 18, 2018) to a high of $0.0175 (Apr 16, 2025), with a median of $0.0142 per EA.
Are there cheaper alternatives to CALCIUM ANTACID 500 MG CHW TAB?
Yes. 3 NADAC-published products share the same active ingredient, strength, and dosage form. The lowest-priced option, QC ANTACID 500 MG CHEW TABLET, is $0.0134 per EA — about 24% below CALCIUM ANTACID 500 MG CHW TAB.
Who manufactures CALCIUM ANTACID 500 MG CHW TAB?
CALCIUM ANTACID 500 MG CHW TAB (NDC 00536104815) is labeled by Rugby Laboratories, and CMS classifies it as a generic product.
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Same classification