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Thompson's Organic Magnesium


  • 50 tablets

    RRP: $23.00

    You save 20% ($4.60)

  • 120 tablets

    RRP: $40.30

    You save 31% ($12.60)

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Thompson's Organic Magnesium is a high potency Magnesium complex for the relief of cramps, nervous tension and the symptoms of PMS.

Magnesium is a 'master mineral' that coordinates the proper function of nerves, muscle, blood vessels and bones, with 70% of the body's magnesium stored in the bones and teeth. Processed foods, alcohol, the use of diuretics, liver or kidney disease, and the use of oral contraceptives can all deplete magnesium in the body and bones.

Because Magnesium is best absorbed in a 'bound' form, Thompson's Organic Magnesium Complete has been formulated to include a range of forms of magnesium that help the body absorb and use the mineral. Thompson's Magnesium Complete contains Magnesium aspartate, Magnesium orotate and Magnesium amino acid chelate. These organic forms are better absorbed and better utilised than inorganic forms, because they are presented to the body in a form which can be more readily and rapidly absorbed. Thompson’s Organic Magnesium Complete is, thus, a highly bioavailable form of Magnesium, in a base of the Magnesium-rich wholefoods, Kelp. It also contains Vitamin B6 and Vitamin D as cofactors involved in the absorption and utilisation of Magnesium.

Indications for use: 

  • Gallstones or kidney stones
  • Brittle or porous bones
  • Muscle cramping
  • Anxiety, depression and irritability
  • PMS symptoms, including breast tenderness, weight gain and cravings
  • Fatigue, including chronic fatigue.


Adults take one tablet a day (between meals), or as professionally prescribed.

Each Tablet Provides:


  • Pyridoxine Hydrochloride (Vitamin B6) 30mg
  • Cholecalciferol 2.5mcg (Equiv. Vitamin D 100 IU)


  • Magnesium Aspartate 100mg (Equiv. Magnesium 7.5 mg)
  • Magnesium Orotate 100mg (Equiv. Magnesium 6.4 mg)
  • Magnesium Amino Acid Chelate 805.5mg (Equiv. Magnesium 161 mg)
  • Magnesium-Rich Wholefoods:
  • Kelp (Equiv. Fucus vesiculosus herb dry) 25mg

No Added: Dairy, gluten, egg, nuts, shellfish, soy, wheat, yeast, artifical colouring, flavouring or preservatives.


There are a variety of health concerns that Thompson's products may be able to assist with, such as General Energy and Vitality, Healthy Aging, Stress Management and Children’s Health.

Junior Immunofort is a popular immune boosting formula that children love. It is packed full of vitamins, minerals and nutrients that may help support their overall health. 

Thompson's Grape Seed 19,000 tablets are rich with antioxidants like proanthocyanidins, which may protect cells from rogue free radical damage.

Thompson's is an established market leader in New Zealand, and now proudly exports its products internationally.

Your satisfaction is of paramount importance to us! If we can help in any way please contact us using the details below.

Email: [email protected]

Australia Free Phone: 1800 040 156

Other Countries Phone: +64 3 265 9758

Live Chat: Between the hours of 7am – 3pm AEST

You can also subscribe to the HealthPost email newsletter for all the latest news, health info and exclusive special offers. Find out more about our guarantee, payment options and delivery times, or view our FAQs page for frequently asked questions and answers.

We also highly recommend reading product reviews. They can be a great way of finding out that little bit extra about products you're interested in.

We publish all helpful customer reviews, including negative reviews - these are genuine!

Customer Reviews

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Items 1 to 10 of 45 total

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Thompsons Magnesium Review by

I'm impressed with this brand, bought for cramps at night but find I am sleeping much better also. Seems to help the arthritis at night too.

Highly Recommended Review by

It is very important for us to have organic supplements, and Thompson's is....helped me to get to sleep as I was having trouble. Also muscle recovery after any hard work has been quite noticeable.

A really good product! Review by

This magnesium was suggested to me to use to help sleep and anxiety which I had suffered from for the past ten years. I was very dubious as had tried magnesium before and everything else but decided to give it a go and some time. After a couple of weeks I really noticed a difference. I am sleeping much better and my anxiety is way more manageable. I would really recommend this product.

Best magnesium on the market Review by

I've tried cheaper brands but this organic magnesium seems to be the only once that makes a difference to both mine and my husband's sleep. I started taking it when I was pregnant to help with night muscle cramps (totally eradicated them) and soon realised that I started sleeping much better as well. I've put so many people on to this brand but I do really believe in it!

Very Good Review by

I notice if I don't take this, the tightness in my shoulders and neck comes back. Has helped with mild headaches and my husband has even noticed I am sleeping better! Healthpost you're awesome, the reviews are so helpful to make a decision as there are so many products.

The Best Review by

Great product, no more monthly cramps, better post recovery from exercise, better sleep, fabulous service, best price...
How does it get better than that! :-)

Sleep Well Review by

I seem to sleep very well taking Magnesium at night. Having a good sleep works well for a nice relaxing day the following day.

Good value product Review by

I have been taking Thompson's Organic Magnesium for years now, it is really effective for reducing muscle cramps. I have tried other brands but always come back to this one. It works and is cost effective, especially when buying 120 tablet jars.
I recommend this product to anyone who has a magnesium deficiency.

Tell the world Review by

I tell all my clients that exercise to take magnesium....anyone who needs a better sleep....restless legs....cramps...brilliant product!!!

Very good Review by

Excellent product. Been using it a long time. Dont feel nervous now.

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Product Highlights


  • TRUSTED NZ SUPPLIER To Australia for over 20 years
  • FREE DELIVERY Free Tracked Airmail Delivery within Australia When You Spend Over $79
  • EARN BONUS Reward Points With Every Order learn more

    30 Days Hassle Free Return Service

    Your satisfaction is extremely important to us. Any problems will be addressed in a friendly and efficient manner, with your total satisfaction as our over-riding concern.

    Our Return Policy

    If you have changed your mind about a product and it is in re-saleable condition (unopened, with undamaged packaging) you can return it within 30 days of receipt for a full refund.

    For more info on returns, visit our Guarantee page.

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