Magnesium Oxide
- Product NDC
- 81033-027
- 11-digit product format
- 810330027
- Labeler code
- 81033
- Product ID
- 81033-027_4225e628-15ad-6bf0-e063-6394a90a98d6
- Type
- HUMAN OTC DRUG
- Nonproprietary name
- Magnesium Oxide
- Dosage form
- TABLET
- Route
- ORAL
- Labeler
- Kesin Pharma
- Application
- M001
- Marketing category
- OTC MONOGRAPH DRUG
- Marketing start
- 2025-04-07
- Substance
- MAGNESIUM OXIDE
- Active strength
- 400 mg/1
- Pharmacologic classes
- Calculi Dissolution Agent [EPC], Increased Large Intestinal Motility [PE], Inhibition Large Intestine Fluid/Electrolyte Absorption [PE], Inhibition Small Intestine Fluid/Electrolyte Absorption [PE], Magnesium Ion Exchange Activity [MoA], Osmotic Activity [MoA], Osmotic Laxative [EPC], Stimulation Large Intestine Fluid/Electrolyte Secretion [PE]
- NDC exclude flag
- No
- Listing certified through
- 2026-12-31
- Current FDA listing
- Yes
Reported adverse events (FAERS/openFDA)#
Adverse event summaries are temporarily unavailable. Other product information remains available.
Additional Listing Data#
- Finished product
- Yes
- Brand name base
- Magnesium Oxide
- Listing expiration
- 2026-12-31
Active Ingredients#
| Ingredient | Strength |
|---|---|
| MAGNESIUM OXIDE | 400 mg/1 |
Harmonized UNII identifiers#
| Identifier | FDA.report destination |
|---|---|
| 3A3U0GI71G | Internal UNII lookup |
Harmonized RxCUI identifiers#
| Identifier | FDA.report destination |
|---|---|
| 198741 | Internal RxNorm lookup |
Harmonized SPL set identifiers#
| Identifier | FDA.report destination |
|---|---|
| 31f417f0-1637-eefa-e063-6294a90a121b | Available on FDA.report |
DailyMed Product Concepts#
DailyMed Package Descriptions#
| Package NDC | Product | Description | Form | Quantity | Strength | SPL version |
|---|---|---|---|---|---|---|
| 81033-027-01 | Magnesium Oxide | 10 in 1 CARTON | TABLET | 10 | 2 | |
| 81033-027-12 | Magnesium Oxide | 120 in 1 BOTTLE | TABLET | 120 | 2 | |
| 81033-027-41 | Magnesium Oxide | 100 in 1 BLISTER PACK | TABLET | 100 | 2 |
DailyMed Billing Units#
| Package NDC | Billing unit | Product NDC | DailyMed indexing SPL | SPL version | Effective |
|---|---|---|---|---|---|
| 81033-027-01 | EA - Each | 81033-027 | 19739058-48c9-4d88-9671-511f131bff1b | 1 | 2026-05-22 |
| 81033-027-12 | EA - Each | 81033-027 | 782cadc8-b6c0-44a0-9b3f-1278a3d24d1d | 1 | 2025-10-14 |
| 81033-027-41 | EA - Each | 81033-027 | e07bdfca-b7b4-4057-a0c3-a192951d59cb | 1 | 2026-05-22 |
openFDA label cross-check#
OpenFDA label data provides additional search and identifier links. DailyMed’s Structured Product Label is the canonical label on FDA.report. Matching records are deduplicated before they are shown below.
| Brand | Generic | Manufacturer | SPL set ID | Effective date | Available safety fields | Join |
|---|---|---|---|---|---|---|
| Tums Chewy Bites | CALCIUM CARBONATE | Navajo Manufacturing Company Inc. | 297d6703-ed4e-10d3-e063-6394a90a9f3a | 2024-12-17 | Warnings | M001 |
| Calcium Carbonate 10 gr (648 mg) (Antacid) | CALCIUM CARBONATE 10GR (648 MG) | RUGBY LABORATORIES | f21c8cf7-45cb-492b-bf4a-462024a54569 | 2024-12-17 | Warnings | M001 |
| Extra Strength Antacid Tablets, Caseys 4good | CALCIUM CARBONATE 750 MG | Lil' Drug Store Prodsucts, Inc. | 026aefd6-bb80-1ffd-e063-6394a90a1262 | 2024-12-16 | Warnings | M001 |
| Foster and Thrive Regular Strength Antacid | CALCIUM CARBONATE | Strategic Sourcing Services LLC | 1aeb60fb-eebe-4e54-be1c-4e01f3b7269c | 2024-12-13 | Warnings | M001 |
| Foster and Thrive Extra Strength Antacid 127AF Extra Strength Antacid Assorted Fruit | CALCIUM CARBONATE | Strategic Sourcing Services LLC | 8b2fabf7-4dc6-445a-842c-b28ae081fdc8 | 2024-12-13 | Warnings | M001 |
| Foster and Thrive Regular Strength Antacid Peppermint | CALCIUM CARBONATE | Strategic Sourcing Services LLC | 49d1b6c4-432b-44d3-b073-0185dbed7a90 | 2024-12-12 | Warnings | M001 |
| Mylanta Maximum Strength Classic Flavor | ANTACID AND ANTI GAS ALUMINUM HYDROXIDE MAGNESIUM HYDROXIDE AND SIMETHICONE | Infirst Healthcare Inc. | 56853b20-a2aa-4b19-a428-3dde232114c6 | 2024-12-11 | Warnings | M001 |
| Mylanta New Tonight Soothing Honey Chamomile | CALCIUM CARBONATE,MAGNESIUM HYDROXIDE AND SIMETHICONE | Infirst Healthcare Inc. | 123f3005-a0a0-4970-94f1-f6d04741078b | 2024-12-11 | Warnings | M001 |
| GERI-LANTA MAXIMUM STRENGTH | ALUMINUM HYDROXIDE, MAGNESIUM HYDROXIDE, DIMETHICONE | NuCare Pharmaceuticals, Inc. | fd160cfd-9ad4-81c7-e053-6394a90a33f6 | 2024-12-11 | Warnings | M001 |
| Topcare Ultra Strength Antacid Peppermint | CALCIUM CARBONATE | Topco Associates, LLC | fb434059-7b6e-42e0-acfa-db9879f6a4e4 | 2024-12-11 | Warnings | M001 |
| TopCare Ultra Strength Antacid Assorted Fruit | CALCIUM CARBONATE | Topco Associates, LLC | dd038b15-2ecb-4ee2-b356-db6d87c2f01b | 2024-12-11 | Warnings | M001 |
| Antacid | ALUMINUM HYDROXIDE, MAGNESIUM HYDROXIDE, SIMETHICONE | Retail Business Services, LLC. | 74823298-d24a-4ffe-8446-1661305372b2 | 2024-12-11 | Warnings | M001 |
| Extra Strength Antacid Smooth Dissolve Assorted Fruit | CALCIUM CARBONATE | UNITED NATURAL FOODS, INC. DBA UNFI | 1b6a48a7-0703-2d3d-e063-6394a90a4641 | 2024-12-11 | Warnings | M001 |
| Careone Regular Strength Calcium Antacid | CALCIUM CARBONATE | Retail Business Services, LLC. | bdd9a64d-777b-45e0-8a9a-6cdc54baf898 | 2024-12-11 | Warnings | M001 |
| Careone Regular Strength calcium Antacid | CALCIUM CARBONATE | Retail Business Services, LLC. | cb6e12cc-4b88-4046-a9fc-2dbe4bca965e | 2024-12-11 | Warnings | M001 |
| TopCare Ultra Strength Antacid Assorted Berry | CALCIUM CARBONATE | Topco Associates, LLC | c10c56ba-51cf-47f9-80a8-aa188859608f | 2024-12-11 | Warnings | M001 |
| Antacid | ALUMINUM HYDROXIDE, MAGNESIUM HYDROXIDE, SIMETHICONE | Retail Business Services, LLC. | ce2edc57-e550-4aa9-bbfe-37933913c9eb | 2024-12-11 | Warnings | M001 |
| GERI-LANTA MAXIMUM STRENGTH | ALUMINUM HYDROXIDE, MAGNESIUM HYDROXIDE, DIMETHICONE | Geri-Care Pharmaceuticals, Corp | b8712a98-30b7-4154-a5bf-0095ef901412 | 2024-12-09 | Warnings | M001 |
| HEARTBURN RELIEF | ALUMINUM HYDROXIDE AND MAGNESIUM CARBONATE | GERI-CARE PHARMACEUTICALS, CORP | 1f1dbf41-cb87-37d4-e063-6394a90ae294 | 2024-12-09 | Warnings | M001 |
| MAXIMUM STRENGTH Antacid | ALUMINUM HYDROXIDE, MAGNESIUM HYDROXIDE, DIMETHICONE | Geri-Care Pharmaceuticals, Corp | 25c93d2a-3c48-ca3a-e063-6294a90a312e | 2024-12-09 | Warnings | M001 |
DailyMed RxNorm Mappings#
| RxCUI | RxNorm string | TTY | DailyMed | SPL version |
|---|---|---|---|---|
| 198741 | magnesium oxide 400 MG Oral Tablet | PSN | 31f417f0-1637-eefa-e063-6294a90a121b | 2 |
| 198741 | magnesium oxide 400 MG Oral Tablet | SCD | 31f417f0-1637-eefa-e063-6294a90a121b | 2 |
| 198741 | magnesium oxide 400 MG (magnesium 241.3 MG) Oral Tablet | SY | 31f417f0-1637-eefa-e063-6294a90a121b | 2 |
Packages#
| Package NDC | 11-digit format | Description | Units | Marketing start | Sample | Exclude flag | Status |
|---|---|---|---|---|---|---|---|
| 81033-027-01 | 81033002701 | 10 BLISTER PACK in 1 CARTON (81033-027-01) / 100 TABLET in 1 BLISTER PACK (81033-027-41) | 10 blister pack | 2025-11-01 | No | No | Current |
| 81033-027-12 | 81033002712 | 120 TABLET in 1 BOTTLE (81033-027-12) | 120 tablet | 2025-04-07 | No | No | Current |
| 81033-027-41 | 81033002741 | 100 in 1 BLISTER PACK | Historical |