Quick answers
- What is Calcium carbonate, dimethicone and magnesium hydroxide used for?
- The Drug Facts label of Mylanta Classic (Infirst Healthcare Inc.) lists these uses: relieves; heartburn; acid indigestion; sour stomach; upset stomach due to these symptoms; pressure and bloating commonly referred to as gas; overindulgence in food and drink.
- Do I need a prescription for Calcium carbonate, dimethicone 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, dimethicone 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.
Mylanta Classic · Infirst Healthcare Inc.
Calcium carbonate 800 mg/10 mL · Dimethicone 80 mg/10 mL · Magnesium hydroxide 270 mg/10 mL, liquid (oral)
Active ingredient
Calcium carbonate 800 mg Magnesium hydroxide 270 mg Simethicone 80 mg
Purpose
Antacid Antacid Anti-gas
Uses
relieves:
- heartburn
- acid indigestion
- sour stomach
- upset stomach due to these symptoms
- pressure and bloating commonly referred to as gas
- 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.
Keep out of reach of children
In case of overdose, get medical help or contact a poison control center right away at 1-800-222-1222.
Directions
- shake well before use
- measure with dosing cup provided
- adults and children 12 years and over: 10 mL-20 mL (1-2 doses) as needed, between meals, at bedtime or as directed by a doctor
- do not take more than 60 mL (6 doses) in any 24-hour period
- do not use the maximum dosage for more than 2 weeks
- children under 12 years : ask a doctor
- mL=milliliter
Inactive ingredients
benzoic acid, benzyl alcohol, edetate disodium, flavors, glycerin, glyceryl monostearate, methylcellulose, microcrystalline cellulose, peg-8 stearate, polysorbate 65, purified water, sodium benzoate, sorbic acid, sucralose, xanthan gum
Questions?
call 1-844-695-6624 toll free (English and Spanish)
— FDA label of Mylanta Classic, Infirst Healthcare Inc., effective February 5, 2024. See the official label on DailyMed →
Rolaids Advanced Antacid Anti-gas Wild Berry · Chattem, Inc.
Calcium carbonate 1000 mg · Dimethicone 40 mg · Magnesium hydroxide 200 mg, tablet, chewable (oral)
Active ingredient (in each tablet)
Calcium carbonate USP 1000 mg Magnesium hydroxide USP 200 mg Simethicone USP 40 mg
Purpose
Antacid Antacid Antigas
Uses
for the relief of:
- heartburn
- sour stomach
- acid indigestion
- upset stomach associated with these symptoms
- pressure and bloating, commonly referred to as gas, associated with these symptoms
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
corn starch, dextrose, FD&C blue no. 1 lake, FD&C red no. 40 lake, magnesium stearate, maltodextrin, natural and artificial flavor, propylene glycol alginate, silicon dioxide, stearic acid, sucrose, triacetin
Questions?
? Call 1- 866-844-2798 or visit www. ROLAIDS .com Keep carton as it contains important product information.
— FDA label of Rolaids Advanced Antacid Anti-gas Wild Berry, Chattem, Inc., effective January 14, 2026. See the official label on DailyMed →
Mylanta Fall Harvest Collection Pumpkin Spice · Infirst Healthcare Inc.
Calcium carbonate 800 mg/10 mL · Dimethicone 80 mg/10 mL · Magnesium hydroxide 270 mg/10 mL, suspension (oral)
Active ingredient (in each 10 mL dose)
Calcium carbonate 800 mg Magnesium hydroxide 270 mg Simethicone 80 mg
Purpose
Antacid Antacid Anti-gas
Uses
relieves: heartburn pressure and bloating commonly referred to as gas acid indigestion sour stomach upset stomach due to 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 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.
Keep out of reach of children
In case of overdose, get medical help or contact a poison control center right away at 1-800-222-1222.
Directions
shake well before use measure with dosing cup provided adults and children 12 years and over : 10 mL-20 mL (1-2 doses) between meals, at bedtime or as directed by a doctor do not take more than 60 mL (6 doses) in any 24- hour period do not use the maximum dosage for more than 2 weeks children under 12 years : ask a doctor mL= milliliter
Inactive ingredients
benzyl alcohol, carboxymethylcellulose sodium, flavors, glycerin, microcrystalline cellulose, purified water, sodium carbonate, sorbitol, sucralose, sucrose, xanthan gum
Questions?
call 1-844-695-6624 toll free (English and Spanish)
— FDA label of Mylanta Fall Harvest Collection Pumpkin Spice, Infirst Healthcare Inc., effective August 15, 2026. See the official label on DailyMed →
Mylanta One Antacid/Anti-Gas · Infirst Healthcare Inc.
Calcium carbonate 1000 mg · Dimethicone 80 mg · Magnesium hydroxide 270 mg, tablet, chewable (oral)
Active ingredient (in each tablet)
Calcium carbonate 1000mg Magnesium hydroxide 270mg Simethicone 80mg
Purpose
Antacid Antacid Anti-gas
Uses
relieves: heartburn acid indigestion sour stomach upset stomach due to these symptoms pressure and bloating commonly referred to as gas 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.
Keep out of reach of children
In case of overdose, get medical help or contact a poison control center right away at 1-800-222-1222.
Directions
adults and children 12 years and over: chew 1 tablet as symptoms occur, or as directed by doctor do not take more than 6 tablets in 24 hours do not use the maximum dosage for more than 2 weeks children under 12 years of age: ask a doctor
Inactive ingredients
adipic acid, crospovidone, dextrose, flavors, magnesium stearate, maltodextrin, sucralose
— FDA label of Mylanta One Antacid/Anti-Gas, Infirst Healthcare Inc., effective December 11, 2023. See the official label on DailyMed →
Mylanta Coat and Cool · Infirst Healthcare Inc.
Calcium carbonate 1200 mg/10 mL · Dimethicone 80 mg/10 mL · Magnesium hydroxide 270 mg/10 mL, liquid (oral)
Active ingredient (in 10 mL dose)
Calcium Carbonate 1200 mg Magnesium Hydroxide 270 mg Simethicone 80 mg
Purpose
Antacid Antacid Anti-gas
Uses
relieves: acid indigestion heartburn sour stomach upset stomach due to these symptoms pressure and bloating commonly referred to as gas 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.
Keep out of reach of children
In case of overdose, get medical help or contact a Poison Control Center right away at (1-800-222-1222)
Directions
shake well before using Measure with dosing cup provided adults and children12 years and over: take 10-20 mL (1-2 doses) between meals, at bedtime, or as directed by a doctor do not take more than 60 mL in 24 hours period do not use the maximum dosage for more than 2 weeks children under 12 years: ask a doctor mL- milliliter
Inactive ingredients
benzyl alcohol, carboxymethylcellulose sodium, flavor, glycerin, microcrystalline cellulose, purified water, sodium carbonate, sorbitol, sucralose, sucrose, xanthan gum
Questions?
Call 1-844-695-6624 toll free (English and Spanish)
— FDA label of Mylanta Coat and Cool, Infirst Healthcare Inc., effective January 1, 2024. See the official label on DailyMed →
Heartburn Plus Gas Relief Chewable Multi Symptom · Walgreen Co.
Calcium carbonate 675 mg · Dimethicone 60 mg · Magnesium hydroxide 135 mg, tablet, chewable (oral)
Active ingredient (in each tablet)
Calcium carbonate USP 675 mg Magnesium hydroxide USP 135 mg Simethicone USP 60mg
Purpose
Antacid Antacid Antigas
Uses
relieves:
- heartburn
- acid indigestion
- pressure, bloating and discomfort commonly referred to as gas
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 8 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 to 4 tablets as symptoms occur or as directed by a doctor.
Inactive ingredients
corn starch, D & C red 27 lake, dextrose, FD & C blue 1 lake, , flavor, magnesium stearate, maltodextrin, silicon dioxide, sucralose. Questions? 1-866-467-2748
Questions?
1-866-467-2748
— FDA label of Heartburn Plus Gas Relief Chewable Multi Symptom, Walgreen Co., effective January 1, 2018. 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 800 mg/10 mL · Dimethicone 80 mg/10 mL · Magnesium hydroxide 270 mg/10 mL · liquid (oral) · 7 products
Drug Facts for this strength and form ↑
| Brand or product name | Company on the label | Label |
|---|---|---|
| Antacid and Antigas | Chain Drug Marketing Association, Inc. | — |
| Antacid and Antigas | Geri-Care Pharmaceuticals, Corp | — |
| Antacid and Antigas | Meijer, Inc. | DailyMed |
| Mylanta Classic | Infirst Healthcare Inc. | DailyMed |
| Mylanta Vanilla Caramel | Infirst Healthcare Inc. | DailyMed |
Calcium carbonate 1000 mg · Dimethicone 40 mg · Magnesium hydroxide 200 mg · tablet, chewable (oral) · 4 products
Drug Facts for this strength and form ↑
| Brand or product name | Company on the label | Label |
|---|---|---|
| Rolaids Advanced Antacid Anti-gas Mixed Berry | Chattem, Inc. | DailyMed |
| Rolaids Advanced Antacid Anti-gas Wild Berry | Chattem, Inc. | DailyMed |
| Rolaids Heartburn plus Gas | The Procter & Gamble Manufacturing Company | — |
| Rolaids Multi-Symptom Advanced Antacid plus Anti-gas Wild Berry | The Procter & Gamble Manufacturing Company | — |
Calcium carbonate 800 mg/10 mL · Dimethicone 80 mg/10 mL · Magnesium hydroxide 270 mg/10 mL · suspension (oral) · 3 products
Calcium carbonate 1000 mg · Dimethicone 80 mg · Magnesium hydroxide 270 mg · tablet, chewable (oral) · 2 products
Drug Facts for this strength and form ↑
| Brand or product name | Company on the label | Label |
|---|---|---|
| Mylanta One Antacid/Anti-Gas | Infirst Healthcare Inc. | DailyMed |
Calcium carbonate 1200 mg/10 mL · Dimethicone 80 mg/10 mL · Magnesium hydroxide 270 mg/10 mL · liquid (oral) · 1 product
Drug Facts for this strength and form ↑
| Brand or product name | Company on the label | Label |
|---|---|---|
| Mylanta Coat and Cool | Infirst Healthcare Inc. | DailyMed |
Calcium carbonate 675 mg · Dimethicone 60 mg · Magnesium hydroxide 135 mg · tablet, chewable (oral) · 1 product
Drug Facts for this strength and form ↑
| Brand or product name | Company on the label | Label |
|---|---|---|
| Heartburn Plus Gas Relief Chewable Multi Symptom | Walgreen Co. | DailyMed |
Calcium carbonate 1330 mg · Dimethicone 40 mg · Magnesium hydroxide 235 mg · tablet, chewable (oral) · 1 product
| Brand or product name | Company on the label | Label |
|---|---|---|
| Rolaids Advanced Antacid plus Anti-Gas Soft Chews | The Procter & Gamble Manufacturing Company | — |
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.
- Infirst Healthcare Inc.8 products
- Geri-Care Pharmaceuticals, Corp3 products
- The Procter & Gamble Manufacturing Company3 products
- Chattem, Inc.2 products
- Chain Drug Marketing Association, Inc.1 product
- Walgreen Co.1 product
- Meijer, Inc.1 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.