Magnesium Tablet Side Effects in Pakistan

A complete guide to the side effects of Magnesium Tablet. From common effects to serious warnings — everything you need to know is on this page.

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-07-09

Side Effects

Quick Answer

Common side effects of Magnesium Tablet include diarrhoea and stomach cramps, particularly at higher doses. Serious effects such as hypermagnesaemia in kidney disease (low blood pressure, muscle weakness) require immediate medical attention. Most patients tolerate Magnesium Tablet well at the correct dose. Contact your doctor if any side effect persists or worsens.

Side Effects at a Glance

Common

Diarrhoea (especially at higher doses)
Nausea
Stomach cramps

Serious — See a Doctor

Hypermagnesaemia (magnesium toxicity) in kidney disease — low blood pressure and muscle weakness
Respiratory depression at very high doses
Cardiac arrhythmia (rare, at toxic levels)

When to See a Doctor Immediately

If you develop severe diarrhoea or abdominal pain
If you feel unusually weak or your blood pressure drops suddenly
If you have kidney disease and develop any new symptoms while taking magnesium

Magnesium Tablet Side Effects (Nuksanat)

Magnesium Tablet (Magnesium as Magnesium Oxide / Magnesium Sulphate) is generally safe when taken at the correct dose. However, like all supplements, it can cause side effects in some patients.

Common Side Effects (Aam Nuksanat)

Diarrhoea (especially at higher doses)
Nausea
Stomach cramps

These side effects are usually mild and dose-dependent. Taking the tablet with food can help reduce them. If they continue, inform your doctor.

Serious Side Effects (Sanjeedah Nuksanat)

Hypermagnesaemia (magnesium toxicity) in kidney disease: low blood pressure and muscle weakness — see a doctor immediately
Respiratory depression at very high doses — see a doctor immediately
Cardiac arrhythmia (rare, at toxic levels) — see a doctor immediately

When to See a Doctor (Kab Doctor Se Milna Zaroori Hai)

If you develop severe diarrhoea or abdominal pain
If you feel unusually weak or your blood pressure drops suddenly
If you have kidney disease and develop any new symptoms while taking magnesium

Warnings and Precautions (Ihtiyat)

Don't use Magnesium Tablet if you have severe kidney disease without medical supervision
Inform your doctor of all medicines you take, including antibiotics

Side Effects Summary Table

Type	Side Effect	Action
Common	Diarrhoea	Take with food / reduce dose / inform doctor
Common	Nausea	Take with food / monitor
Common	Stomach cramps	Take with food / monitor
Serious	Hypermagnesaemia (kidney patients)	See a doctor immediately
Serious	Respiratory depression	See a doctor immediately

Reporting Side Effects

If you notice any unexpected side effect, report it on the DRAP pharmacovigilance portal: https://www.dra.gov.pk/pharmacovigilance

The information in this guide is for educational purposes only. If you notice any side effect, contact your doctor or pharmacist.

Frequently Asked Questions

What are the most common side effects of Magnesium Tablet?

The most commonly reported side effects of Magnesium Tablet are diarrhoea and stomach cramps, which are dose-dependent and more likely at higher doses. These are usually mild and improve when taken with food or at a lower dose. Inform your doctor if they persist.

Can Magnesium Tablet cause allergic reactions?

Yes, like all medicines, Magnesium Tablet can rarely cause allergic reactions. Signs include rash, itching, swelling, or difficulty breathing. Stop use and seek medical help immediately if this happens.

Is Magnesium Tablet safe to take for a long time?

Long-term use at standard doses is generally safe for patients with normal kidney function. Your doctor will monitor for signs of hypermagnesaemia if you have kidney disease and continued use is needed.

What should I do if I experience side effects from Magnesium Tablet?

For mild side effects such as diarrhoea or cramps, try taking with food or reducing the dose temporarily. For serious effects such as muscle weakness or breathing difficulty, stop the medicine and contact your doctor immediately.

Does Magnesium Tablet affect the liver or kidneys?

Magnesium is excreted by the kidneys. Patients with severe kidney impairment are at high risk of magnesium accumulation (hypermagnesaemia). Always inform your doctor of kidney problems before taking magnesium.

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Sources

DRAP Registered Products Database — Drug Regulatory Authority of Pakistan
WHO Model List of Essential Medicines, 23rd ed. (2023) — World Health Organization
British National Formulary (BNF) — BMJ Group & Pharmaceutical Press

Medical disclaimer

This page is for educational use only and does not replace professional medical advice. Always confirm diagnosis, dose, and interactions with a qualified doctor or pharmacist before starting or changing any medicine.