Isotonix® Magnesium

S$70.25

+ S$1.29 / 1.84% Cashback

GST of S$5.80 included

The GST (Goods and Services Tax) amount is a government-imposed tax.

Single Bottle (90 servings)

Code: SG12989

Daily Magnesium Support for Muscle, Nerve, and Sleep Health
Magnesium is an abundant mineral that supports normal protein synthesis—the process by which your body creates proteins. Because daily dietary needs vary, Isotonix Magnesium provides a high-absorption formula to help meet your body's daily requirements. Made with two distinct forms of magnesium for better absorption, it supports muscle health, nerve function, and restful sleep quality.

Active Ingredients: Magnesium (as magnesium citrate and magnesium glycinate), potassium (as potassium bicarbonate)


Other Ingredients: Fructose, malic acid, citric acid, orange juice powder, orange flavor, passion fruit flavor, silicon dioxide, rebaudioside A (stevia leaf), luo han guo fruit extract, stearic acid.

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An Essential Mineral for Daily Health

300+

Magnesium supports over 300 enzymatic functions in the body crucial for overall wellness and daily energy release.

4th

It is the fourth most abundant mineral in the human body and plays an essential role in daily health.

Magnesium: Foundational Support with Citrate & Glycinate

Adequate magnesium intake plays a key role in supporting proper nerve function, muscle comfort, and restful sleep quality. Isotonix Magnesium is expertly formulated with two highly bioavailable forms of magnesium — citrate and glycinate — to maximize absorption. It helps the body maintain healthy magnesium levels to support muscle health and comfort, sleep quality, and bone health.

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Product Classification

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Gluten-Free

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No Detectable GMO

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Vegan

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Isotonic

Essential Support Beyond Daily Nutrition

Magnesium plays a vital role in supporting overall health and physical well-being. As an important component of the mineralized part of bone, it works alongside calcium and vitamin D to help keep bones strong, support bone mineral density, and assist the normal metabolism of calcium and potassium in adults. Additionally, magnesium supports the transmission of nerve impulses to the muscles to promote muscle comfort, healthy nervous tissue function, and restful sleep quality.

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Key Ingredients & Benefits

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Magnesium

Supports Bone & Mineral Health

Promotes Muscle & Nerve Function

Maintains Normal Regulation of Heart & Blood Pressure

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Potassium

Maintains Fluid Balance

Promotes Muscle Relaxation

Directions For Use

image of person pouring IX Magnesium into a glass

Pour one small capful (3.3 g) of Isotonix® Magnesium into your favorite cup.

image of person mixing Isotonix Magnesium with 2 oz of water in a glass

Add 2 fl oz (60ml) of water for each capful and mix.

image of a person raising a glass of Isotonix Magnesium to drink

For best results, take twice daily — one capful in the morning and evening. If mixed with other Isotonix® products, add 2 oz (60ml) of water for each capful.

Isotonix Delivery System

:05 Minutes

Isotonix Liquid Vitamins

  • Formulated to survive digestion.
  • Delivers concentrated nutrients to the site of absorption.
  • Contains no fillers or binders.
  • No artificial color or flavors. 

:40 minutes

Standard Vitamin Tablet

  • Contains lab-created coatings and lubricants.
  • Often contains artificial colors, nutrients and flavors.
  • Limited absorption of nutrient utilization. 

Frequently Asked Questions

With regards to bone health, it is an important component of the mineralized part of bone, and supports the normal metabolism of calcium and potassium in adults. Magnesium works together with calcium and vitamin D to help keep bones strong and support bone mineral density. Magnesium also supports muscle and the transmission of nerve impulses to the muscles. Adequate magnesium levels are also important for cardiovascular health. Magnesium supports a healthy heart.

The recommended dietary allowance for adult males between the ages of 19 and 30 should be receiving 400 mg of magnesium daily. Adult females of the same age should receive 310 mg daily. For older males, the recommendation is 420 mg daily, while older females should consume 320 mg daily. Daily lifestyle factors and poor dietary choices adversely affect the amount of magnesium we are ingesting. Foods rich in magnesium include whole grains, nuts and green vegetables, which are good sources of magnesium because of their chlorophyll content. Meats, starches, dairy products and refined and processed foods – which make up a large portion of the typical diet in today’s society – contain low amounts of magnesium. High-fat diets provide lesser amounts of magnesium. For these reasons, it is important to help balance our diets with nutritional supplements that can provide additional nutritional assistance.

Both forms of magnesium were carefully chosen based on scientific research, as they work well within the Isotonix delivery system.

Yes. For maximum absorption, this product should be taken on an empty stomach.

Anyone who has an ongoing medical condition, is pregnant or breastfeeding, or is taking prescription medication should speak with their healthcare provider before taking this product. Also, magnesium should be used cautiously by those with reduced kidney function.

Isotonix Magnesium can be taken with Isotonix OPC-3, Isotonix Calcium Plus, and Heart Health™ Omega III Fish Oil with Vitamin E.

* This product is not intended to diagnose, treat, cure or prevent any disease.

Reviews

Customer Rating

4.9 out of 5 star rating.

(65 reviews)

Break down of ratings:
(61) 5 star ratings.
or, 94% of total reviews.
(4) 4 star ratings.
or, 6% of total reviews.
(0) 3 star ratings.
or, 0% of total reviews.
(0) 2 star ratings.
or, 0% of total reviews.
(0) 1 star ratings.
or, 0% of total reviews.
100%

would recommend this product.

Write a Review

Improve my sleep

5 out of 5 star rating.

by EShop

Shop Consultant

on 14/7/2026

Love this Isotonix Magnesium very much. After i srarted this supplement. My sleeping quality is improved.

Cramp free and sleep well

5 out of 5 star rating.

by ONG

Shop Consultant

on 21/6/2026

Use to suffered leg cramp in the middle of the night. With 1 cap Mix with 2 caps of OPC3, I NO Longer suffer leg cramp in the middle of the night and I gained a good night sleep as well. Isotonix Magnnesium Rocks!

Better Sleep & Relief from Menstrual Cramps

5 out of 5 star rating.

by Lee

Shop Consultant

on 25/5/2026

I used to experience painful foot cramps whenever my menstrual cycle was approaching. Ever since I was introduced to Magnesium, it has been a lifesaver whenever the cramps start to kick in.

Besides helping with cramps, it has also improved both my husband’s and my sleep quality. We take it about an hour before bedtime, and it helps us relax and enjoy a much deeper, more restful sleep.

It has definitely become part of our daily routine!

Works great for menses

5 out of 5 star rating.

by Anonymous

on 25/5/2026

Less uncomfort and smooth after taking this magnesium.

Recovery Support Activated, Goodbye Jaw Tension

5 out of 5 star rating.

by LUM

Shop Consultant

on 24/5/2026

A shot of Magnesium before bed has been a great support for my sleep quality and muscle recovery.

I used to feel a lot of body tightness and tension in my head after a long day of work. Since taking Magnesium in the evenings, my jaw muscles feel more relaxed, and I no longer grind my teeth during sleep.

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