Product Information
CAL-GEST 500 MG TABLET CHEW is a generic product labeled by Rugby Laboratories, priced at $0.0169 per EA under NDC 00536100715. Its NADAC has been published 631 times since Sep 3, 2014.
Strength
500 mg/1
Manufacturer
Rugby LaboratoriesNDC
00536100715
Classification
Generic
Dosage Form
TABLET, CHEWABLE
Route
ORAL
Effective Date
9/23/2026
Active Ingredients
CALCIUM CARBONATEApproval Type
OTC MONOGRAPH DRUG
FDA Application
M001On Market Since
10/30/2019
Pharmacological Classes
Price Statistics
The NADAC for CAL-GEST 500 MG TABLET CHEW has been published 631 times since Sep 3, 2014, and over the history we have for it it has risen 13.7%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.0169 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 | $0.0143 |
| Average price | $0.0147 |
| Largest weekly change | +18.7% (Feb 19, 2020) |
| Weeks tracked | 631 |
| Tracking since | Sep 3, 2014 |
Generic Alternatives
The matcher finds 3 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 21% 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
Rugby Laboratories manufacturer profile
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Drug market
Antacid Tablets market comparison
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Therapeutic class
Blood Coagulation Factor 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 CAL-GEST 500 MG TABLET CHEW?
The current National Average Drug Acquisition Cost (NADAC) for CAL-GEST 500 MG TABLET CHEW, manufactured by Rugby Laboratories, is $0.0169 per EA (NDC 00536100715), effective Sep 30, 2026.
How has the price of CAL-GEST 500 MG TABLET CHEW changed over time?
Over the history we have for it, the NADAC for CAL-GEST 500 MG TABLET CHEW has risen 13.7%. It has been tracked across 631 weekly CMS publications since Sep 3, 2014.
What are the highest and lowest recorded NADAC prices for CAL-GEST 500 MG TABLET CHEW?
Since Sep 3, 2014, the NADAC for CAL-GEST 500 MG TABLET CHEW has ranged from a low of $0.0121 (Jul 18, 2018) to a high of $0.0175 (Apr 16, 2025), with a median of $0.0143 per EA.
Are there cheaper alternatives to CAL-GEST 500 MG TABLET CHEW?
Yes. 3 manufacturers publish a NADAC-priced product with the same active ingredient and strength in a comparable dosage form. The lowest-priced option, QC ANTACID 500 MG CHEW TABLET, is $0.0134 per EA — about 21% below CAL-GEST 500 MG TABLET CHEW.
Who manufactures CAL-GEST 500 MG TABLET CHEW?
CAL-GEST 500 MG TABLET CHEW (NDC 00536100715) is labeled by Rugby Laboratories, and CMS classifies it as a generic product.