Magnesium Citrate
Magnesium citrate is a saline laxative taken as a liquid to relieve occasional constipation, with several oral products and one product labeled for topical use.
🧬 Where this information comes from
The clinical label records used on this page are FDA-filed Structured Product Labeling (SPL) retrieved through openFDA. We identified 58 clinical label sets within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. Forms, routes, brands, labelers, strengths, and NDC product-record counts are built separately from matching FDA National Drug Code Directory records. The linked DailyMed document is a representative official source for verification, not the page’s only clinical source. View the linked label on DailyMed →
Magnesium citrate is an over-the-counter saline laxative for occasional constipation that draws water into the bowel, usually bringing a bowel movement within ½ to 6 hours; it is an older standby, widely available generically and as store brands. Most people tolerate an occasional dose well but notice cramping and an urgent, watery bowel movement, so stay near a bathroom. Stop and call a doctor if you have rectal bleeding or no bowel movement afterward. Check with a doctor first if you have kidney disease (magnesium can build up), belly pain, nausea or vomiting, or have used laxatives for over a week.
Clinical pearls
- Space your other medicines at least 2 hours before or after magnesium citrate, since it can change how they work.
- Drink a full 8-ounce glass of liquid with each dose to replace the water it pulls into the bowel.
- Children under 2 should only take it on a doctor’s advice, and for OneLAX that age is under 6.
- It is meant for occasional use, so constipation that keeps coming back calls for a gentler daily plan instead.
Patient Information Guide A plain-language walkthrough of Magnesium Citrate, written from its FDA label.
What Magnesium Citrate Is Used For
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Magnesium citrate is used for one main purpose across the supported products.
- Relief of occasional constipation (irregularity), listed for Magnesium Citrate Saline Laxative (grape, cherry, lemon), Citroma, OneLAX, generic Magnesium Citrate and EZ2Go.
- Generally produces a bowel movement in ½ to 6 hours.
Magnesium Citrate Dosage
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Follow the label on your specific product and your prescriber’s or pharmacist’s advice. Most labels say to shake well, then drink a full glass (8 ounces) of liquid with each dose.
- Citroma, Magnesium Citrate Saline Laxative and generic Magnesium Citrate labels give amounts by age group, with a daily maximum.
- OneLAX gives its amounts in fractions of a bottle, by age.
- These labels say it may be taken as a single daily dose or in divided doses.
Dosing details from the FDA-approved label
From the Magnesium Citrate prescribing information (“Dosage and Administration”). Doses are set by your prescriber for your product, condition, kidney function and age — never change a dose on your own.
- Adults and children 12 years of age and over
- 6.5 to 10 fl oz
- May be taken as a single daily dose or in divided doses
- Drink a full glass (8 ounces) of liquid with each dose
- Shake well before using
- Maximum: 10 fl oz in 24 hours
- Children 6 to under 12 years of age
- 3 to 7 fl oz
- May be taken as a single daily dose or in divided doses
- Drink a full glass (8 ounces) of liquid with each dose
- Shake well before using
- Maximum: 7 fl oz in 24 hours
- Children 2 to under 6 years of age
- 2 to 3 fl oz
- May be taken as a single daily dose or in divided doses
- Drink a full glass (8 ounces) of liquid with each dose
- Shake well before using
- Maximum: 3 fl oz in 24 hours
- Children under 2 years of age
- Ask a doctor
- OneLAX: adults and children 12 years of age and over
- 1/2 bottle to 1 bottle (10 fl oz)
- Drink a full glass (8 ounces) of liquid with each dose
- May be taken as a single daily dose or in divided doses
- OneLAX: children 6 to 11 years of age
- 1/3 bottle to 1/2 bottle
- Drink a full glass (8 ounces) of liquid with each dose
- May be taken as a single daily dose or in divided doses
- OneLAX: children under 6 years of age
- Consult a doctor
Read the label’s full dosing text
Directions shake well before using drink a full glass (8 ounces) of liquid with each dose may be taken as a single daily dose or in divided doses adults and children 12 years of age and over 6.5 to 10 fl oz maximum 10 fl oz in 24 hours children 6 to under 12 years of age 3 to 7 fl oz maximum 7 fl oz in 24 hours children 2 to under 6 years of age 2 to 3 fl oz in 24 hours maximum 3 fl oz in 24 hours children under 2 years of age ask a doctor
Read the full Dosage and Administration section on DailyMed →
Magnesium Citrate Side Effects
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The label does not list specific common side effects, but it names warning signs to act on.
- Rectal bleeding
- No bowel movement after use
Either one means you should stop use and ask a doctor, as they could signal a serious condition.
Magnesium Citrate Warnings and Precautions
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- Ask a doctor before use if you have kidney disease or follow a magnesium-restricted diet.
- Ask a doctor first if you have abdominal pain, nausea or vomiting.
- Ask first if your bowel habits changed suddenly for 2 weeks, or if you have used a laxative for more than 1 week.
- Stop use and ask a doctor for rectal bleeding or no bowel movement.
- Keep out of reach of children.
Magnesium Citrate Interactions
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Laxatives may affect how other drugs work.
- Take magnesium citrate 2 or more hours before or after other drugs to avoid changing how they work.
- Ask a doctor or pharmacist before use if you take any other drug.
Not a complete list. The label covers the interactions the manufacturer studied or reported, and our own interaction database does not cover every medicine either. Bring your full medication list, including vitamins and herbal products, to your pharmacist.
Before Taking Magnesium Citrate
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- Kidney disease
- Magnesium-restricted diet
- Abdominal pain, nausea or vomiting
- Sudden change in bowel habits lasting 2 weeks
- Laxative use longer than 1 week
- Pregnancy or breastfeeding: ask a health professional first
- Young children: ask a doctor for those under 2 (OneLAX: under 6)
Magnesium Citrate Overdose
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In case of overdose, get medical help or contact a Poison Control Center right away.
How to Store Magnesium Citrate
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Store at temperatures between 46 and 86 °F (8 and 30 °C).
Written from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →
Magnesium Citrate: Pharmacist Answers to Common Questions
Quick, plain-English answers to the questions patients ask most about Magnesium Citrate — the kind of thing our pharmacy team would talk through with you at the counter.
What is magnesium citrate for?
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How should I take it?
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Can I take it with my other medicines?
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Who should check with a doctor first?
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When should I stop and call someone?
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Is Magnesium Citrate available over the counter?
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When was Magnesium Citrate first available?
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Who makes Magnesium Citrate?
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Answers drafted from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →
More About Magnesium Citrate on HelloPharmacist
Magnesium Citrate Forms and Strengths (How It Comes)
Magnesium Citrate is available in 2 forms. Different forms and brands can have different approved uses, doses, schedules, and directions. Follow the instructions for your exact product, and do not switch forms without guidance from your prescriber or pharmacist.
Need a version that does not list lactose, a gluten source, a dye or gelatin? Inactive ingredients differ by manufacturer: see Magnesium Citrate inactive ingredients by manufacturer.
Oral solution
How this form is used
- Magnesium Citrate Saline Laxative (cherry, grape and lemon) is used for relief of occasional constipation.
- Citroma is used for relief of occasional constipation.
- Citroma directions say to shake well and drink a full glass (8 ounces) of liquid with each dose.
- Magnesium Citrate Saline Laxative (grape and lemon) directions say it may be taken as a single daily dose or in divided doses.
- Citroma directions say children under 2 should ask a doctor first.
Topical solution
How this form is used
- EZ2Go Magnesium Citrate Saline Laxative Lemon Flavor is used for relief of occasional constipation.
- EZ2Go directions say to shake well and drink a full glass (8 ounces) of liquid with each dose.
- EZ2Go directions say children under 2 should ask a doctor first.
Magnesium Citrate on the U.S. Market: Products, Makers and Brands
How Magnesium Citrate appears in the FDA’s National Drug Code Directory — including its dosage forms, strengths, brand names, manufacturers, and FDA-listed product records. These are directory records, not sales or prescription volume.
29 companies list 58 Magnesium Citrate product records with the FDA, mostly as oral solution, topical solution; the earliest marketing or approval year on record is 2008. Brand names on the directory include citroma, EZ2G0 Stimulax, Gadavyt and 8 more; the rest are generics.
FDA-listed product records by dose form (tablet variants merged) — FDA National Drug Code Directory. Record counts are not sales or prescription volume.
Also listed with the FDA, not a patient dose form: Granule (4) — bulk drug substance and unfinished product sold to compounders and other manufacturers to finish, and multi-item kits. These aren’t counted in the dose-form total above.
Share of FDA-listed product records by manufacturer — FDA National Drug Code Directory. Record counts are not sales or prescription volume.
How Widely Magnesium Citrate Is Used (Medicaid Data)
A general measure of how commonly Magnesium Citrate is prescribed, based on Medicaid — one of the largest public drug programs. The figure below is prescriptions filled in Q1–Q4 2025, summed across every form and brand of the drug.
Think of this as a proxy for how widely Magnesium Citrate is used, drawn from freely available public data. Medicaid is just one program — these numbers don’t include Medicare, other government coverage, or commercial and cash-pay prescriptions, so real-world use is higher than what’s shown here.
How commonly is Magnesium Citrate prescribed? Of the 1,603 medications we measure, Magnesium Citrate ranks #745 by Medicaid prescriptions — more than 54% of them.
Utilization by Magnesium Citrate product
Pick a product to see its own Medicaid numbers. Each chip is one clinical product — a specific strength & dosage form as defined by RxNorm — with brand-name and generic versions combined.
magnesium citrate 58.2 MG/ML Oral Solution
Summed across the 10 of 103 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 1052760
Shares are of the Medicaid prescriptions shown here. Product grouping follows RxNorm (the National Library of Medicine’s drug terminology), so “one product” means one strength & dosage form regardless of manufacturer. Dollar figures are gross Medicaid reimbursement before mandatory rebates — rebates (often large, especially for brand-name drugs) are confidential, so actual net cost to Medicaid is lower than shown.
Source: Medicaid State Drug Utilization Data (CMS), aggregated by generic ingredient — summed across every NDC (all brands, strengths, salt forms and dosage forms) of Magnesium Citrate, and across all states and both fee-for-service and managed-care claims. A general popularity signal; it excludes Medicare, commercial insurance and cash prescriptions, so it is not total U.S. use. Based on the 10 of 103 listed Magnesium Citrate NDCs with Medicaid activity.
Compare Magnesium Citrate Products
A representative set of FDA-listed product records for Magnesium Citrate — across manufacturers, strengths, and dosage forms, grouped by form with each product’s manufacturer and how the FDA approved it. The same medicine may be made and packaged by different companies, so a single drug can have many directory entries. (It’s also why a refill can look different — a new shape, color, or box — even though it contains the same medication.)
| Strength | Route | Manufacturer / Labeler | Category ⓘ | Details |
|---|---|---|---|---|
| 💊Oral solution | ||||
| 1.745 g/29.6 mL | Oral | Aarna Usa Inc. | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Akron Pharma Inc × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Amerisource Bergen × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Better Living Brands, LLC × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Bionpharma, Inc. | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Chain Drug Marketing Association × 5 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | CVS Pharmacy, Inc. × 3 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Discount Drug Mart | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Family Dollar Stores, Inc × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Farmacias De Similares TX LLC | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Geri-Care Pharmaceuticals, Corp | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Hy-Vee, Inc. | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Meijer Distribution Inc × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Meijer Distribution Inc. | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Nice-Pak Products, LLC × 3 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Old East Main Co. × 3 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Pinnacle RX LLC | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Publix Super Markets, Inc. × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Retail Business Services, LLC × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Strategic Sourcing Services × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Target Corporation | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | The Kroger Co. × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Topco Associates LLC | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | United Natural Foods, Inc. dba UNFI × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 0.059 g/mL | Oral | Universal Distribution Center LLC × 3 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | UpLift Brands, LLC × 3 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Valu Merchandisers Company × 2 listings | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Vi-Jon, LLC | OTC MONOGRAPH DRUG | View NDC → |
| 1.745 g/29.6 mL | Oral | Walgreen Company × 4 listings | OTC MONOGRAPH DRUG | View NDC → |
| 💊Topical solution | ||||
| 1.745 g/mL | Topical | Valley Medical Products LLC | OTC MONOGRAPH DRUG | View NDC → |
Showing 58 of 58 products — FDA National Drug Code Directory. See every product, package size and price: browse all 58 Magnesium Citrate NDCs →
Magnesium Citrate Side Effects Reported to the FDA (FAERS)
After a medicine reaches the market, patients, doctors and drugmakers can send the FDA reports of problems they think may be linked to it. Here’s what’s been reported for Magnesium Citrate — a signal of what to watch for, not proof the drug caused it.
Source: openFDA, from the FDA Adverse Event Reporting System (FAERS). These are voluntary reports — they don’t prove the drug caused the effect, and counts reflect how often something was reported, not how often it actually happens. Reports also often name the very problem the medicine is taken for — a common reason to file one is that the drug didn’t help — so for a pain reliever you may see “pain” high on the list; that points to why the report was filed, not to the drug causing the symptom. This counts every report that lists Magnesium Citrate in any role, so the total runs higher than the FDA’s official dashboard, which counts only cases where the drug is the suspect. For the authoritative figures, see the FDA FAERS Public Dashboard. Always talk to your pharmacist or doctor.
Magnesium Citrate FDA Approval History
How Magnesium Citrate went from FDA review to the pharmacy shelf — the key milestones in its regulatory journey.
Source: Drugs@FDA.
Magnesium Citrate Recall History
A recall is when a specific batch of a medicine is pulled from the market — usually a manufacturing issue, not a problem with the drug itself. Class I is most serious, Class III least.
The FDA’s enforcement reports list 4 Magnesium Citrate recalls since July 2021, covering 9 product listings. Two of them are still ongoing or began in the last six months and are listed first. A recall names specific lots from one company, so check the lot number on your own bottle rather than assuming every product is affected; your pharmacist can check whether your supply came from an affected lot.
- Meijer Magnesium Citrate Saline Laxative Oral Solution Dye Free, Sugar Free Grape, 10 fl. oz bottle, Distributed by: Meijer Distribution Inc., Grand Rapids,MI 49544, NDC 79481-0034-9 Lots: Lot #: A81834, Exp 1/31/2026 FDA record D-0501-2024 →
- Walgreens Dye-Free Magnesium Citrate Saline Laxative/Oral Solution, Sugar Free Low Sodium, Grape flavor 10 fl. oz, Distributed by: Walgreen Co, 200 Wilmot Rd, Deerfield, IL 60015, NDC 0363-0427-98. Lots: Lot A80623; Exp. 11/30/2025 FDA record D-0228-2024 →
- Good Neighbor Pharmacy, DYE FREE, SUGAR FREE Magnesium Citrate Saline Laxative, Oral Solution, Cherry Flavor 10 fl. oz, Distributed by AmerisourceBergen, 1 West First Ave, Conshochoken, PA 19428, NDC… Lots: Lots A80673, A80742; Exp 10/31/2025 FDA record D-0227-2024 →
- Magnesium Citrate SALINE LAXATIVE, Oral Solution, 1.745 g, Cherry Flavor, 10 FL OZ (296 mL), a) Best Choice UPC 0 70038 58790 3 Proudly Distributed By: Valu Merchandises, Co. 5000 Kansas Ave. Kansas… Lots: All lots remaining within expiry. FDA record D-1512-2022 →
- Magnesium Citrate SALINE LAXATIVE, Oral Solution, 1.745 g, Lemon Flavor, 10 FL OZ (296 mL), a) CVS Health UPC 0 50428 33517 8 or UPC 0 50428 30594 2 Distributed by: CVS Pharmacy, Inc., One CVS Drive,… Lots: All lots remaining within expiry. FDA record D-1511-2022 →
- Rexall, Magnesium Citrate Saline Laxative, Oral Solution, (1.745 g/fl oz), Lemon Flavor, 10 FL OZ (296 mL), Distributed By Dolgencorp. LLC 100 Mission Ridge, Goodlettsville, TN 37072 or Distributed B… Lots: Lot # 0511629, EXP 12/4/2022; 0562243, EXP 2/17/2024 FDA record D-1506-2022 →
- P, magnesium citrate SALINE LAXATIVE, Oral Solution, (1.745 g/fl oz), Lemon Flavor, 10 FL OZ (296 mL), Distributed By Publix Super Markets, Inc. 3300 Publix Corporate Parkway, Lakeland, FL 33811; NDC… Lots: Lot # 0562243, EXP 2/17/2024 FDA record D-1505-2022 →
- Kroger, Magnesium Citrate SALINE LAXATIVE, Oral Solution, 1.745 g, Lemon Flavor, 10 FL OZ (296 mL), Distributed By The Kroger CO Cincinnati, Ohio 45202; NDC 30142-899-38 UPC 0 41260 00182 6 Lots: Lot# 0557622, EXP 1/12/2024 FDA record D-1503-2022 →
- EQUALINE magnesium citrate saline laxative, oral solution, (1.745 g/fl oz), DYE FREE lemon flavor, 10 FL OZ (296 mL), Distributed by Supervalu Inc. Eden Prairie, MN 55344 USA, or Distributed By UNFI… Lots: Lot # 0511629, EXP 12/4/2022 FDA record D-1502-2022 →
Source: FDA enforcement (recall) reports, via openFDA; our copy was last updated Oct 8, 2026.
RxNorm Concept Web — From Ingredient to Every Form and Strength
This page starts with one ingredient concept (IN). The branches below show its dose-form concepts (SCDF), then the available clinical drug and strength concepts (SCD). Combination products remain separate concepts with their own pages.
RxCUI 52356 4 dose forms · 9 strengths
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Dose form (SCDF) Chewable Tablet RxCUI 441032No current FDA listingClinical drug / strength (SCD) 84 MGRxCUI 271881985 MGRxCUI 2595842100 MGRxCUI 2744162 -
Dose form (SCDF) Oral Capsule RxCUI 372680No current FDA listingClinical drug / strength (SCD) 100 MGRxCUI 2608655125 MGRxCUI 1673024133.3 MGRxCUI 1673073250 MGRxCUI 410995 -
Dose form (SCDF) Oral Solution RxCUI 311424In current FDA listingsClinical drug / strength (SCD) 58.2 MG/MLRxCUI 1052760 -
Dose form (SCDF) Oral Tablet RxCUI 204730No current FDA listingClinical drug / strength (SCD) 100 MGRxCUI 1313985
Look up RxCUI 52356 in the RxCUI Atlas →
RxNorm is the U.S. National Library of Medicine’s normalized drug vocabulary. Its concept hierarchy can include forms that are not currently marketed; the status on each branch compares that concept with current FDA listings. RxCUIs identify vocabulary concepts, not individual packages or manufacturers.
Magnesium Citrate Supply and Shortage Status
Whether Magnesium Citrate is in short supply in the U.S. right now, plus any shortage history the FDA has on record. A shortage usually reflects a manufacturing or demand issue — not a safety problem with the drug.
Source: openFDA, from the FDA Drug Shortages database.
Magnesium Citrate Brand Names
Magnesium Citrate is sold under 11 brand names in the FDA directory — citroma, EZ2G0 Stimulax, Gadavyt, PenPrep and others. A brand and its generic contain the same active ingredient; the brand name belongs to one company's product.
Who Makes Magnesium Citrate: Manufacturers and Labelers
29 companies list Magnesium Citrate products with the FDA. By number of product records, the largest are Chain Drug Marketing Association, Walgreen Company, CVS Pharmacy, Inc.. Labelers include manufacturers and repackagers; the product in your bottle depends on which one your pharmacy stocks.
…and 5 more on the FDA NDC directory.
Magnesium Citrate Drug Class (RxNorm)
Magnesium Citrate belongs to the Osmotically acting laxatives class.
Classified by RxNorm RxClass — the U.S. National Library of Medicine's standardized drug-classification service (Established Pharmacologic Class from the FDA, the ATC drug family from the WHO, and mechanism of action). Reference only, not medical advice.
Sources for This Magnesium Citrate Page
Core label, product, RxNorm, safety, and utilization data on this page come from the sources identified below. AI-written, editorial, and licensed sections are labeled separately.
How this page is built
HelloPharmacist combines public FDA and NLM records and does not author the underlying clinical facts. The plain-language sections are written with AI from the FDA-approved label text and reviewed by our pharmacy team before publication. Farmacias De Similares TX LLC is the representative DailyMed label linked for verification and dates. This is general education, not medical advice: always talk to your doctor or pharmacist about your own medicines. How we build and review drug pages →