Milk of Magnesia Magnesium Hydroxide 2400 mg/30mL Suspension — NDC 0121-0431-30 (Billing 00121-0431-30)
This is a package of Milk of Magnesia Magnesium Hydroxide 2400 mg/30mL Suspension from PAI Holdings, LLC dba PAI Pharma, marketed since Sep 1979 and currently FDA-listed. It is this product's only package size.
NDC database record
One package, one record: these facts belong to NDC 0121-0431-30 alone.
- Record
- FDA NDC Directory package listing · Human OTC drug
- Code segments
- 0121 labeler · 0431 product · 30 package
- Package marketed since
- Sep 4, 1979
- Sample package
- No — commercial package
- Listing certified through
- Dec 31, 2027
- Barcode (UPC-A, from the NDC)
- 3 0121043130 2
- Medicaid fills, this package
- 2,084 prescriptions in the last four reported quarters
- FDA record last changed
- Oct 1, 2026
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification
- GSN (GCN sequence number): 003026
- GCN: 07950
- HICL (First Databank): 001329
- AHFS class code: 56:12.00.00
- RxCUI (RxNorm): 253017
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 5, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
RxNorm drug class
This medicine belongs to the Magnesium compounds class.
Where does this data come from?
- RxClass (NLM) · catalog refreshed Oct 1, 2026
Clinical
Magnesium hydroxide is used to treat occasional constipation in children and adults on a short-term basis. Magnesium hydroxide is in a class of medications called saline laxatives. It works by causing water to be retained with the stool. This increases the number of bowel movements and softens the stool so it is easier to pass.
Read the full MedlinePlus article ↗- It depends on the product you pick up. Most magnesium hydroxide products — like Dulcolax liquid, Colace Fast-Acting Saline Laxative, MiraFAST soft chews, and many Milk of Magnesia...
- What is magnesium hydroxide actually used for?
- Yes, a few things matter here. If you're taking a liquid or suspension, shake it well before every use. Whatever form you take, follow it with a full 8-ounce glass of water or anot...
- How should I take it — does it matter when or how I drink it?
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Magnesium Hydroxide (OTC drug) — tap one for details:
Magnesium Hydroxide (OTC drug) may be associated with lower levels of 3 nutrients — worth a chat with your pharmacist, not a cause for alarm.
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 5, 2026
Ask a licensed pharmacist directly — free, answered by our team.
Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per mL | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | $0.4206 | $1,261.80 / 3000 ml |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
Where does this data come from?
- CMS NADAC weekly file
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · through Q1 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 00121-0431-30 You're viewing this Main listing | 10 TRAY in 1 CASE / 10 CUP, UNIT-DOSE in 1 TRAY / 30 mL in 1 CUP, UNIT-DOSE | 1979-09-04 | — | Active |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Milk Of Magnesia Mint 1200 mg/15mL 00536-2470-85 | Rugby | 473 ml | $0.006 | — | Availability likely | — |
| Milk Of Magnesia Original 1200 mg/15mL 00904-0788-16 | MAJOR | 473 ml | $0.006 | — | Availability likely | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 63868-0310-12 | Chain | 355 ml | $0.009 | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 00536-1319-83 | RUGBY | 355 ml | $0.010 | — | Availability likely | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 46122-0435-40 | AMERISOURCEBERGEN | 355 ml | $0.010 | — | Availability likely | — |
| Milk Of Magnesia Mint 1200 mg/15mL 46122-0436-40 | AMERISOURCEBERGEN | 355 ml | $0.010 | — | Availability likely | — |
| Milk Of Magnesia 1200 mg/15mL 46122-0437-40 | AMERISOURCEBERGEN | 355 ml | $0.010 | — | Availability likely | — |
| Milk Of Magnesia 1200 mg/15mL 70000-0061-01 | CARDINAL | 355 ml | $0.010 | — | Availability likely | — |
| Milk Of Magnesia Mint 1200 mg/15mL 70000-0065-01 | CARDINAL | 355 ml | $0.010 | — | Availability likely | — |
| Milk Of Magnesia 1200 mg/15mL 70677-1072-01 | Strategic | 355 ml | $0.010 | — | Availability likely | — |
| Milk Of Magnesia 1200 mg/15mL 70677-1073-01 | STRATEGIC | 355 ml | $0.010 | — | Availability likely | — |
| Milk Of Magnesia 1200 mg/15mL 70677-1074-01 | STRATEGIC | 355 ml | $0.010 | — | Availability likely | — |
| Milk of Magnesia 2400 mg/30mLthis 00121-0431-30 | PAI | 10 cups | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 00363-0647-12 | WALGREEN | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 00363-0649-12 | WALGREEN | 355 ml | — | — | FDA listed | — |
| Gentle Laxative 1200 mg/15mL 00363-1634-12 | WALGREEN | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 00363-1648-12 | WALGREEN | 355 ml | — | — | FDA listed | — |
| Humco Milk of Magnesia 80 mg/mL 00395-1672-16 | Humco | 473 ml | — | — | FDA listed | — |
| Milk of Magnesia 2400 mg/30mL 00904-7564-73 | Major | 10 cups | — | — | FDA listed | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 11822-0399-04 | RITE | 355 ml | — | — | Discontinued | — |
| Milk Of Magnesia 1200 mg/15mL 11822-3329-08 | RITE | 355 ml | — | — | Discontinued | — |
| Milk Of Magnesia Original 1200 mg/15mL 17856-0788-01 | ATLANTIC | 10 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 21130-0649-12 | BETTER | 355 ml | — | — | FDA listed | — |
| Milk of Magnesia 1200 mg/15mL 30142-0547-12 | KROGER | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 30142-0649-12 | KROGER | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 36800-0649-12 | TOP | 355 ml | — | — | FDA listed | — |
| Milk of Magnesia mint 1200 mg/15mL 36800-0674-12 | TOP | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 36800-0684-12 | TOP | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 37808-0064-12 | H | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Mint 1200 mg/15mL 37808-0889-12 | H | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 37808-0901-12 | H | 355 ml | — | — | FDA listed | — |
| Dulcolax Liquid 1200 mg/15mL 41167-0291-00 | Chattem, | 354 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 49035-0636-12 | Wal-Mart | 355 ml | — | — | Discontinued | — |
| Milk Of Magnesia 1200 mg/15mL 49035-0649-26 | Wal-Mart | 769 ml | — | — | FDA listed | — |
| Milk Of Magnesia Mint 1200 mg/15mL 50804-0647-12 | GOOD | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 50804-0648-12 | GOODSENSE | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Original 1200 mg/15mL 50804-0649-12 | GOODSENSE | 355 ml | — | — | FDA listed | — |
| Milk of Magnesia 400 mg/5mL 55154-9403-05 | Cardinal | 5 cups | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 55319-0647-12 | FAMILY | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 55319-0648-12 | FAMILY | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 55910-0649-12 | DOLGENCORP, | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 56062-0649-12 | Publix | 355 ml | — | — | FDA listed | — |
| Milk of Magnesia 2400 mg/30mL 57237-0314-31 | Rising | 100 cups | — | — | FDA listed | — |
| Gentle Laxative 1200 mg/15mL 57896-0615-12 | GERI-CARE | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Mint 1200 mg/15mL 57896-0647-12 | Geri-Care | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 57896-0648-12 | Geri-Care | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Original 1200 mg/15mL 57896-0649-12 | Geri-Care | 355 ml | — | — | FDA listed | — |
| milk of magnesia 1200 mg/15mL 59779-0332-35 | CVS | 769 ml | — | — | Discontinued | — |
| Milk Of Magnesia Original 1200 mg/15mL 60687-0429-76 | American | 10 cups | — | — | FDA listed | — |
| Milk of Magnesia 400 mg/5mL 63739-0196-10 | McKesson | 10 cups | — | — | Discontinued | — |
| Milk Of Magnesia Original 1200 mg/15mL 63868-0787-57 | Chain | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Mint 1200 mg/15mL 63868-0788-57 | Chain | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 63941-0647-12 | VALU | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 63941-0648-12 | VALU | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 63941-0649-12 | VALU | 355 ml | — | — | FDA listed | — |
| Premier Value Milk of Magnesia 80 mg/mL 68016-0850-16 | Pharmacy | 473 ml | — | — | FDA listed | — |
| Milk Of Magnesia Mint 1200 mg/15mL 68788-8638-03 | Preferred | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 69842-0278-81 | CVS | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 69842-0318-79 | CVS | 769 ml | — | — | FDA listed | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 69842-0332-92 | CVS | 355 ml | — | — | FDA listed | — |
| Careone Milk of magnesia Original Milk of Magnesia Original 1200 mg/15mL 72476-0661-05 | Retail | 355 ml | — | — | FDA listed | — |
| CareOne Milk of Magnesia Cherry 1200 mg/15mL 72476-0665-05 | Retail | 355 ml | — | — | FDA listed | — |
| Gentle Laxative 1200 mg/15mL 79481-0195-01 | MEIJER, | 355 ml | — | — | FDA listed | — |
| Milk of Magnesia mint 1200 mg/15mL 79481-0647-01 | Meijer, | 769 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 79481-0648-01 | Meijer, | 769 ml | — | — | FDA listed | — |
| Gentle Laxative 1200 mg/15mL 79903-0324-12 | WALMART | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 80447-0649-12 | Fact | 355 ml | — | — | FDA listed | — |
| Milk of Magnesia 400 mg/5mL 81033-0014-52 | Kesin | 100 cups | — | — | FDA listed | — |
| Milk Of Magnesia Original 1200 mg/15mL 83324-0188-12 | Chain | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 85740-0647-12 | Power | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia Cherry 1200 mg/15mL 85740-0648-12 | Power | 355 ml | — | — | FDA listed | — |
| Milk Of Magnesia 1200 mg/15mL 85740-0649-12 | Power | 355 ml | — | — | FDA listed | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Oct 3, 2026
- CMS NADAC weekly file
Availability & generic status
We did not find an FDA-approved generic match for this exact strength, form and route.
Where does this data come from?
- FDA Orange Book · refreshed Oct 3, 2026
Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.
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UNII CZ227117JE
A silicone-based compound made of linked silicon and oxygen atoms arranged in a ring structure. It acts as a solvent, carrier, or conditioning agent to help distribute active ingredients evenly and improve product texture and spreadability.
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UNII RN3152OP35
Hypromellose is a plant-based thickener and film-former derived from cellulose. In medicines, it's used to create coatings on tablets and capsules, control how fast the drug dissolves, and improve the product's texture and stability.
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UNII A2I8C7HI9T
Methylparaben is a preservative derived from benzoic acid that prevents growth of bacteria, fungi, and mold in medicines. It extends the product's shelf life and maintains safety during storage.
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UNII EE90ONI6FF
Potassium citrate is a salt derived from citric acid and potassium. In medicines, it acts as a buffer to adjust and maintain the pH balance of the product, helping keep it stable and palatable.
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UNII 6DC9Q167V3
Propylene glycol is a clear liquid derived from petroleum or vegetable sources. It acts as a solvent, humectant, and preservative in medicines, helping dissolve active ingredients and maintain product stability.
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UNII Z8IX2SC1OH
Propylparaben is a chemical preservative used to prevent bacterial and fungal growth in medicines and personal care products. It helps extend shelf life and maintain product safety during storage.
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UNII SB8ZUX40TY
Saccharin sodium is an artificial sweetener made from saccharin salt. It's added to medicines to improve taste, especially in liquid formulations for children or bitter drugs.
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UNII 506T60A25R
Sorbitol is a natural sugar alcohol derived from glucose. It serves as a sweetener, humectant, and bulking agent in medications to improve taste and help maintain moisture in the product.
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UNII 059QF0KO0R
Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.
9 inactive ingredients listed in the exact product block matched to this NDC.
Label-section wording can be broader than the structured product block and may mention additional formulation ingredients.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.- FDA label on DailyMed · label index refreshed Oct 5, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
Manufacturer & labeler
More NDCs from PAI Holdings, LLC dba PAI Pharma labeler code 00121
- DIPHENHYDRAMINE HYDROCHLORIDE 12.5 mg/5mL Solution NDC 0121-0489-00
- Acetaminophen and Codeine Phosphate 120 mg/5mL; 12 mg/5mL Solution NDC 0121-0504-00
- Phenobarbital 20 mg/5mL Solution NDC 0121-0531-05
- Metoclopramide 5 mg/5mL Solution NDC 0121-0576-16
- Haloperidol 2 mg/mL Solution NDC 0121-0581-04
- Sodium Citrate and Citric Acid 500 mg/5mL; 334 mg/5mL Solution NDC 0121-0595-00
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
FDA label — Drug Facts FDA SPL
🎯 Indications and Usage ▾
Uses as Antacid • relieves • heartburn • sour stomach • acid indigestion • and upset stomach associated with these symptoms
Uses as Saline Laxative • for relief of occasional constipation (irregularity) • this product generally produces bowel movement in 1/2 to 6 hours
⏱️ Dosage and Administration ▾
Directions for Antacid • shake well before use • mL=milliliters • adults and children 12 years of age or older: 30 mL (1 dose) up to 2 times a day or as directed by a doctor • children under 12 years of age: ask a doctor
Directions for Saline Laxative • do not exceed the maximum recommended daily dose of 60 mL in a 24 hour period • shake well before use • mL=milliliters • drink a full glass (8 oz) of liquid with each dose • adults and children 12 years of age or older: 30 mL to 60 mL (1 to 2 doses) • children under 12 years of age: ask a doctor • the dose may be taken as a single daily dose or in divided doses
⚠️ Warnings ▾
Warnings for Antacid 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. When using this product • do not take more than 60 mL (2 doses) in a 24-hour period • do not use the maximum dosage for more than 2 weeks except under the advice and superision of a doctor • may cause a laxative effect If pregnant or breast-feeding, ask a health professional before use.
Keep out of reach of children. In case of overdose, get medical help or contact a poison control center right away.
📦 Storage and Handling ▾
Other information for Antacid • each 30 mL contains: magnesium 1 g • store at 20-25°C (68-77°F) • protect from freezing • tamper-evident: do not use if seal on cup is missing or torn
Other information for Saline Laxative • each 30 mL contains: magnesium 1 g • store at 20-25°C (68-77°F) • protect from freezing • tamper-evident: do not use if seal on cup is missing or torn
🧪 Active Ingredient ▾
Active ingredient (in each 30 mL dose) Magnesium hydroxide 2400 mg
🧪 Inactive Ingredients ▾
Inactive ingregients Inactive ingredients antifoam af emulsion, flavoring, hydroxypropyl methylcellulose, methylparaben, potassium citrate, propylene glycol, propylparaben, purified water, sodium saccharin, sorbitol
🎯 Purpose ▾
Purpose Antacid / Saline Laxative
📄 Ask a Doctor Before Use If ▾
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 • abdominal pain, nausea, or vomiting • a sudden change in bowel habits that lasts more than 2 weeks
📄 Ask a Doctor or Pharmacist Before Use If ▾
Ask a doctor or pharmacist before use If you are presently taking a prescription drug. Antacids may interact with certain prescription drugs.
Ask a doctor or pharmacist before use If you are • presently taking a prescription drug. This product may interact with certain prescription drugs.
📄 When Using This Product ▾
When using this product • do not take more than 60 mL (2 doses) in a 24-hour period • do not use the maximum dosage for more than 2 weeks except under the advice and superision of a doctor • may cause a laxative effect
📄 Stop Use and Ask a Doctor If ▾
Stop use and ask a doctor if • you have rectal bleeding or no bowel movement after using this product. These could be signs of a serious condition. • you need to use a laxative for more that 1 week
🤰 If Pregnant or Breast-Feeding ▾
If pregnant or breast-feeding, ask a health professional before use.
If pregnant or breast-feeding, ask a health professional before use.
📄 Keep Out of Reach of Children ▾
Keep out of reach of children. In case of overdose, get medical help or contact a poison control center right away.
Keep out of reach of children. In case of overdose, get medical help or contact a poison control center right away.
📄 Questions or Comments ▾
Questions or comments? Questions or comments? call 1-800-845-8210
📄 Package Label / Principal Display Panel ▾
PRINCIPAL DISPLAY PANEL - 30 mL Cup Tray Label Delivers 30 mL NDC 0121-0431-30 Milk of Magnesia USP Magnesium Hydroxide 2400 mg Antacid / Saline Laxative SHAKE WELL Package Not Child-Resistant Dist. by: PAI Parma Greenville, SC 29605 SEE DRUG FACTS INSERT F0431300924 Lidding for 30 mL cup
Medicaid utilization & spend
About this NDC listing & data coverage
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | ✓ Available |
| Inactive ingredients (structured) | ✓ Available |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope. |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | ✓ Available |