Quick answers
- What is Calcium carbonate and magnesium hydroxide used for?
- The Drug Facts label of Best Choice Extra Strength (Best Choice (Valu Merchandisers Company)) lists these uses: relieves; heartburn; sour stomach; acid indigestion.
- Do I need a prescription for Calcium carbonate and magnesium hydroxide?
- No. The products on this page are sold without a prescription (over the counter).
- Is a store brand the same as the name brand?
- Products listed together below have the same active ingredients, in the same amount and the same form, as registered with the FDA. Inactive ingredients (such as colors, flavors and fillers) and package sizes can differ. Compare the “Active ingredient” box on both packages, and ask a pharmacist if you are not sure.
- Has Calcium carbonate and magnesium hydroxide been recalled?
- No recall linked to these products appears in the FDA enforcement reports we use.
Drug Facts label
Every over-the-counter medicine must carry a “Drug Facts” box in the same order, set by FDA rules. Below is the label of one product for each common strength and form, quoted word for word. Your own package can differ (for example, children’s products have other directions): always follow the label on your package.
Best Choice Extra Strength · Best Choice (Valu Merchandisers Company)
Calcium carbonate 675 mg · Magnesium hydroxide 135 mg, tablet, chewable (oral)
Active ingredient (in each tablet)
Calcium Carbonate USP 675 mg Magnesium hydroxide USP 135 mg
Purpose
Antacid Antacid
Uses
relieves:
- heartburn
- sour stomach
- acid indigestion
Warnings
Ask a doctor or pharmacist before use if
you are now taking a prescription drug. Antacids may interact with certain prescription drugs.
When using this product
- do not take more than 10 tablets in a 24-hour period
- do not use the maximum dosage for more than 2 weeks.
Keep out of reach of children
Directions
- chew 2-4 tablets as symptoms occur or as directed by a doctor.
Inactive ingredients
corn starch, dextrose, flavor, magnesium stearate, maltodextrin, sucralose. Questions or comment? 1-866-467-2748
Questions?
or comment? 1-866-467-2748
— FDA label of Best Choice Extra Strength, Best Choice (Valu Merchandisers Company), effective July 17, 2026. See the official label on DailyMed →
Rolaids Ultra Strength Mint · Chattem, Inc.
Calcium carbonate 1000 mg · Magnesium hydroxide 200 mg, tablet, chewable (oral)
Active ingredient (in each tablet)
Calcium carbonate USP 1000 mg Magnesium hydroxide USP 200 mg
Purpose
Antacid
Uses
relieves: heartburn sour stomach acid indigestion
Warnings
Ask a doctor or pharmacist before use if
you are now taking a prescription drug. Antacids may interact with certain prescription drugs.
When using this product
do not take more than 7 tablets in a 24-hour period do not use the maximum dosage for more than 2 weeks
Keep out of reach of children
Directions
chew 2-3 tablets as symptoms occur, or as directed by a doctor
Inactive ingredients
dextrose, flavor, magnesium stearate, silicon dioxide, stearic acid, sucralose, sucrose (309-055) As a daily source of calcium and magnesium, chew 2 tablets twice daily. Supplement Facts Serving Size: 2 Tablets, Servings Per Container: 36, Amount Per Serving: Calories 12, Total Carb 2 g (<1% DV*), Sugars 2 g (†DV), Calcium 800 mg (54% DV), Magnesium 170 mg (29% DV). *Percent Daily Values (DV) are based on a 2,000 calories diet. †Daily Value not established.
— FDA label of Rolaids Ultra Strength Mint, Chattem, Inc., effective January 14, 2026. See the official label on DailyMed →
Supreme Antacid · Family Dollar Services Inc
Calcium carbonate 400 mg/5 mL · Magnesium hydroxide 135 mg/5 mL, suspension (oral)
Active ingredient (in each 5 mL teaspoonful)
Calcium carbonate 400 mg Magnesium hydroxide 135 mg
Purpose
Antacid
Uses
relieves heartburn sour stomach acid indigestion upset stomach associated with these symptoms overindulgence in food and drink
Warnings
Ask a doctor before use if
you have kidney disease a magnesium-restricted diet
Ask a doctor or pharmacist before use if
you are presently taking a prescription drug. Antacids may interact with certain prescription drugs.
Stop use and ask a doctor if
symptoms last more than 2 weeks
If pregnant or breast-feeding
ask a health professional before use.
Keep out of reach of children
Directions
shake well before use adults and children 12 years and older: take 2 to 4 teaspoonfuls between meals, at bedtime, or as directed by a doctor do not take more than 18 teaspoonfuls in a 24 hour period or use the maximum dosage for more than 2 weeks children under 12 years: ask a doctor
Inactive ingredients
benzyl alcohol, flavor, hydroxyethylcellulose, purified water, saccharin sodium, simethicone emulsion, sorbic acid, sorbitol solution, xanthan gum
Questions?
1-800-540-3765
— FDA label of Supreme Antacid, Family Dollar Services Inc, effective November 19, 2025. See the official label on DailyMed →
Supreme Antacid Cherry · Cvs
Calcium carbonate 400 mg/5 mL · Magnesium hydroxide 135 mg/5 mL, liquid (oral)
Active ingredient (in each 10 mL )
Calcium carbonate 400 mg Magnesium hydroxide 135 mg
Purpose
Antacid Antacid
Uses
(S) relieves: acid indigestion heartburn sour stomach upset stomach associated with these symptoms
Warnings
Do not take more than 18 teaspoonfuls in a 24-hour period, or use the maximum dosage of this product for more than 2 weeks, except under the advice and supervision of a doctor. ASK A DOCTOR BEFORE USE IF YOU HAVE kidney disease a magnesium-restricted diet ASK A DOCTOR OR PHARMACIST BEFORE USE IF YOU ARE presently taking a prescription drug. Antacids may interact with certain prescription drugs. STOP USE AND ASK DOCTOR if symptoms last more than two weeks KEEP OUT OF REACH OF CHILDREN In case of overdose get medical help or contact a Poison Control Center immediately.
Directions
shake well before use adults and children 12 years and older: take 2 to 4 teaspoonfuls two times a day, or as directed by a doctor children under 12 years: consult a doctor
Inactive ingredients
benzyl alcohol, flavor, hydroxyethyl cellulose, purified water, saccharin sodium, simethicone, sodium carbonate, sorbitol, xanthan gum.
— FDA label of Supreme Antacid Cherry, Cvs, effective May 7, 2026. See the official label on DailyMed →
Rolaids Ultra Strength Antacid Strawberry · Chattem, Inc.
Calcium carbonate 1330 mg · Magnesium hydroxide 235 mg, tablet, chewable (oral)
Active ingredient
s (in each chew ) Calcium carbonate USP 1330 mg Magnesium hydroxide USP 235 mg Active ingredients (in each chew) Calcium carbonate USP 1330 mg Magnesium hydroxide USP 235 mg
Purpose
Antacid Antacid Purpose Antacid Antacid
Uses
relieves: heartburn sour stomach acid indigestion Use relieves: heartburn sour stomach acid indigestion
Warnings
Ask a doctor or pharmacist before use if
you are now taking a prescription drug. Antacids may interact with certain prescription drugs.
When using this product
do not take more than 5 chews in a 24-hour period do not use the maximum dosage for more than 2 weeks
Keep out of reach of children
Warnings
Ask a doctor or pharmacist before use if
you are now taking a prescription drug. Antacids may interact with certain prescription drugs.
When using this product
do not take more than 5 chews in a 24-hour period do not use the maximum dosage for more than 2 weeks
Keep out of reach of children
Keep out of reach of children
Keep out of reach of children
Directions
chew 2-3 chews as symptoms occur, or as directed by a doctor Directions chew 2-3 chews as symptoms occur, or as directed by a doctor
Inactive ingredients
corn starch, corn syrup, corn syrup solids, glycerin, hydrogenated coconut oil, lecithin, natural and artificial flavors, red 40 lake, sucrose, water (309-099) ULTRA STRENGTH ANTACID Rolaids Softchews - Orange Drug Facts Inactive ingredients corn starch, corn syrup, corn syrup solids, glycerin, hydrogenated coconut oil, lecithin, natural and artificial flavors, sucrose, water. yellow 6 lake (309-100)
— FDA label of Rolaids Ultra Strength Antacid Strawberry, Chattem, Inc., effective January 14, 2026. See the official label on DailyMed →
This page is not medical advice. Read the label on your package, and ask a pharmacist or doctor if you are not sure a medicine is right for you, for your child, or with your other medicines.
Same medicine, other brands
Each group lists the products that have exactly the same active ingredients, in the same amount and form, as registered with the FDA (NDC Directory). A store brand in the same group has the same medicine as the name brand; inactive ingredients, flavors and package sizes can differ. Each product links to its own official label.
Calcium carbonate 675 mg · Magnesium hydroxide 135 mg · tablet, chewable (oral) · 8 products
Drug Facts for this strength and form ↑
| Brand or product name | Company on the label | Label |
|---|---|---|
| Best Choice Extra Strength | Best Choice (Valu Merchandisers Company) | DailyMed |
| Extra Strength Antacid Freshmint | Discount Drug Mart | — |
| Meijer Extra Strength Freshmint Flavor | Meijer Distribution Inc | — |
| Premier Value Extra Strength Freshmint Flavor | Chain Drug Consortium, LLC | DailyMed |
| Rolaids Extra Strength Antacid Mint | The Procter & Gamble Manufacturing Company | — |
| Rolaids Extra Strength Fruit | Chattem, Inc. | DailyMed |
| Rolaids Extra Strength Mint | Chattem, Inc. | DailyMed |
| Rolaids ORIGINAL | The Procter & Gamble Manufacturing Company | — |
Calcium carbonate 1000 mg · Magnesium hydroxide 200 mg · tablet, chewable (oral) · 5 products
Drug Facts for this strength and form ↑
| Brand or product name | Company on the label | Label |
|---|---|---|
| Rolaids Ultra Strength 1200 | The Procter & Gamble Manufacturing Company | — |
| Rolaids Ultra Strength Antacid Assorted Fruit | The Procter & Gamble Manufacturing Company | — |
| Rolaids Ultra Strength Mint | Chattem, Inc. | DailyMed |
| Rolaids Ultra Strength Mint | The Procter & Gamble Manufacturing Company | — |
Calcium carbonate 400 mg/5 mL · Magnesium hydroxide 135 mg/5 mL · suspension (oral) · 3 products
Calcium carbonate 400 mg/5 mL · Magnesium hydroxide 135 mg/5 mL · liquid (oral) · 3 products
Calcium carbonate 1330 mg · Magnesium hydroxide 235 mg · tablet, chewable (oral) · 2 products
Drug Facts for this strength and form ↑
| Brand or product name | Company on the label | Label |
|---|---|---|
| Rolaids Ultra Strength Antacid Strawberry | Chattem, Inc. | DailyMed |
| Rolaids Ultra Strength Antacid Strawberry | The Procter & Gamble Manufacturing Company | — |
Calcium carbonate 1250 mg · Magnesium hydroxide 250 mg · tablet, chewable (oral) · 1 product
| Brand or product name | Company on the label | Label |
|---|---|---|
| Rolaids MAX STRENGTH 1500 | The Procter & Gamble Manufacturing Company | — |
Calcium carbonate 800 mg/10 mL · Magnesium hydroxide 270 mg/10 mL · liquid (oral) · 1 product
| Brand or product name | Company on the label | Label |
|---|---|---|
| Supreme Antacid | H E B | DailyMed |
Companies that sell this medicine
The company named on the package (maker or distributor), as listed in the FDA NDC Directory, with its number of over-the-counter products of this medicine.
- The Procter & Gamble Manufacturing Company8 products
- Chattem, Inc.4 products
- Discount Drug Mart, Inc2 products
- Family Dollar Services Inc1 product
- Valu Merchandisers Company1 product
- Discount Drug Mart1 product
- Cvs1 product
- Best Choice (Valu Merchandisers Company)1 product
- Chain Drug Consortium, LLC1 product
- Meijer Distribution Inc1 product
- Geri-Care Pharmaceuticals, Corp1 product
- H E B1 product
Recalls
No recall linked to these products (by their NDC code or label) appears in the FDA enforcement reports.
Sources
- Drug labeling (SPL, openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
- NDC Directory (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
- Drug recall enforcement reports (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 27, 2026, retrieved October 31, 2026
- FDA rule for the Drug Facts label (21 CFR 201.66)
Only medicines marketed under FDA rules for nonprescription drugs (an FDA monograph or an FDA approval) are listed. Homeopathic products are not listed: the FDA does not evaluate them for safety or effectiveness.