Product image of Magnesia (Magnesium Oxide, Light) supplied by GNH India

Magnesia

Active Ingredient:
Magnesium Oxide, Light
Origin:
EU

Magnesia (Magnesium Oxide, Light)

Magnesium oxide, the active ingredient in Magnesia, is a magnesium supplement presented as an oral tablet for oral use. Classified as an antacid and electrolyte supplement, it neutralizes gastric acidity, contributes to magnesium homeostasis, and may provide mild laxative effect for occasional constipation in adults. The product conforms to EU pharmacopeial standards.

GNH India supplies Magnesia as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, ensuring consistent quality and regulatory compliance across markets and reliable delivery.

Manufacturer / TM Owner

Viatris Aps

1
Pack/s
This product is added to your enquiry list

Request a Quote

Please fill out the form below and our team will get back to you shortly with pricing and further information.

A minimum order value applies. Our team will confirm the exact amount or quantity after reviewing your requirements.

Indications & Clinical Uses

Magnesia (magnesium oxide) is used as an antacid and magnesium supplement to address several gastrointestinal and electrolyte‑related conditions.

  • Heartburn and indigestion: provides rapid relief by neutralizing excess gastric acid.
  • Magnesium deficiency: supplies magnesium ions to help restore normal serum levels.
  • Constipation: exerts an osmotic effect in the intestines to promote bowel movements.

How It Works

  • Magnesium oxide reacts chemically with hydrochloric acid in the stomach, forming magnesium chloride and water, which raises gastric pH and reduces acidity. The resulting magnesium ions are absorbed systemically, contributing to extracellular magnesium pools and supporting enzymatic reactions. Unabsorbed magnesium exerts an osmotic effect in the intestines, drawing water into the lumen and promoting bowel motility. These actions together provide antacid relief and a mild laxative effect.

Side Effects

Magnesia may cause a range of adverse reactions, most of which are mild and dose‑related.

Common Side Effects

  • Diarrhea: loose stools occurring after ingestion.
  • Abdominal cramping: discomfort or pain in the stomach area.
  • Nausea: feeling of unease or urge to vomit.
  • Flatulence: increased gas production in the intestines.

Serious or Rare Side Effects

  • Hypermagnesemia: elevated serum magnesium that can affect cardiac and neuromuscular function.
  • Electrolyte imbalance: disturbances in calcium or potassium levels, especially with excessive use.

Precautions & Warnings

Before using Magnesia, consider the following safety measures.

  • Assess magnesium status: check serum levels prior to chronic therapy.
  • Avoid in severe renal impairment: reduced excretion may lead to accumulation.
  • Use with caution when combined with other antacids or laxatives: risk of additive effects.
  • Pregnancy and breastfeeding: safety not established; consult a healthcare professional.
  • Review concomitant medications for potential magnesium binding interactions.
  • Store at ambient temperature: keep in the original container, protect from moisture.

Avoid Interactions

Magnesia can interact with several medicines; awareness helps prevent reduced efficacy or toxicity.

Major Interactions (Avoid)

  • Tetracycline antibiotics: chelation reduces antibiotic absorption.
  • Fluoroquinolone antibiotics: chelation decreases drug bioavailability.
  • Bisphosphonates: magnesium binding impairs absorption.
  • Warfarin: magnesium may potentiate anticoagulant effect.
  • Digoxin: increased serum levels possible.

Moderate Interactions (Monitor Closely)

  • Calcium supplements: competition for intestinal absorption may lower effectiveness of both.
  • Potassium‑sparing diuretics: additive risk of hypermagnesemia.

Frequently Asked Questions

Magnesia is an oral magnesium oxide product used primarily as an antacid to relieve heartburn and indigestion, as a supplement to correct magnesium deficiency, and as a mild laxative to ease occasional constipation.

Magnesium oxide neutralizes stomach acid by reacting with hydrochloric acid to form magnesium chloride and water, raising gastric pH. The released magnesium ions are absorbed systemically, supporting magnesium-dependent enzymes, while unabsorbed magnesium draws water into the intestines, promoting bowel movement.

The appropriate dose of Magnesia is determined by a prescriber based on the individual’s condition, age, renal function and other medications. Patients should follow the healthcare professional’s instructions and not exceed the recommended amount.

Safety of magnesium oxide in pregnancy and lactation has not been definitively established. Women who are pregnant, planning pregnancy, or breastfeeding should discuss potential risks and benefits with their healthcare provider before using Magnesia.

To order Magnesia, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Compared with calcium carbonate, magnesium oxide provides a milder antacid effect but also supplies magnesium, which calcium salts lack. Unlike aluminum‑based antacids, magnesium oxide is less constipating and may actually promote bowel movements, making it a useful alternative for patients who experience constipation with other antacids.

Magnesia should be stored at ambient temperature, preferably below 25 °C, in its original packaging to protect it from moisture and light. Keep the container tightly closed and out of reach of children.

Magnesia is taken orally, usually as a tablet, with a full glass of water. It can be taken with or without food, but patients should follow the prescribing clinician’s guidance regarding timing relative to meals or other medications.

The most serious risks include hypermagnesemia, especially in patients with renal impairment, and severe electrolyte disturbances that can affect cardiac rhythm or neuromuscular function. Prompt medical attention is required if symptoms such as muscle weakness, irregular heartbeat or prolonged diarrhea occur.

Magnesia should be avoided in individuals with severe renal failure, known hypermagnesemia, bowel obstruction, or those taking medications that may interact dangerously, such as certain antibiotics, bisphosphonates, or anticoagulants, unless supervised by a healthcare professional.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

Disclaimer

At GNH India, we aim to provide information that is expert-reviewed, accurate, and reliable. However, all content on this platform is intended for general informational purposes only and does not constitute professional medical advice, diagnosis, or treatment. While efforts are made to maintain accuracy and currency, the information may contain errors, omissions, or may not reflect the latest developments. Always consult a qualified healthcare professional regarding any medical concerns.

All product names, brand names, trademarks and registered trademarks displayed on this website are the property of their respective owners. This website and its operator are not affiliated with, endorsed by, or authorized by any such trade mark owners unless expressly stated. Any reference to product names or trademarks is made solely for descriptive and informational purposes. No commercial relationship, sponsorship, approval, or association with any trademark owner should be inferred. Information provided herein does not constitute promotion, advertising, or an offer for sale of any medicinal product and is intended solely for general informational purposes.

All trademarks and brand names displayed on this website are used strictly in accordance with the provisions of the Trade Marks Act, 1999, specifically Sections 30 and 30(1) governing fair use. Trademark ownership has been accurately attributed under the "Manufacturer/ TM Owner" section in compliance with statutory requirements.

Related Products

Other formulations containing Magnesium Oxide, Light

A

A
A

A
A

A
A

A

Browse all products →

Ordering Process

Simple, Secure, and Seamless

Learn how our streamlined ordering process guarantees fast, compliant, and reliable access to essential medicines worldwide.

Quote request form

01

Submit Quote Request Form

Tell us what medications you need by filling out our simple form and uploading a valid document.

Price estimate review

02

We Review & Send Estimate

Our licensed pharmacists will verify your details and provide you with a detailed cost estimate.

Secure payment

03

Confirm & Make Payment

Discuss any queries, approve the estimate, and complete your payment.

Worldwide delivery

04

Get Delivered

Your medicines, safely packed and delivered to your door or nearest airport — hassle-free.

Regulatory recognitions

Quality You Can Trust

Our internationally recognized certifications underscore our commitment to safety, quality, and excellence.

SGS GSDP Certification

GSDP Compliant from SGS

URS ISO 9001

URS ISO 9001 Certification

FDA Maharashtra

Licensed by FDA Maharashtra

IEC License DGFT

IEC License issued by DGFT