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Sanderson Magnesium FX 1000


  • 60 Tablets

    RRP: $26.20

    Save 50% ($13.00)

  • 120 tablets

    RRP: $38.90

    Save 41% ($15.90)

Magnesium Organic Ultra-Absorption FX 1000 is a high absorption complex of organic magnesium salts and does not contain inorganic magnesium oxide or phosphate, which have poor bioavailability. Magnesium FX 1000 has been formulated to include magnesium citrate, magnesium aspartate, magnesium orotate and magnesium amino acid chelate. Research has shown these organic forms are much better absorbed and are better utilised than inorganic forms. This formulation also contains vitamin B6, vitamin D and selenium as cofactors involved in the optimal absorption and utilisation of magnesium.

It is well known that some forms of minerals or other substances can be absorbed better by the body than others. The most commonly used form of magnesium in supplements is inorganic magnesium oxide (MgO), because it is cheap and because it has a high (up to 60%) elemental magnesium content. HOWEVER, the availability of the magnesium in MgO has been assessed at only around 4-5%. So a tablet boasting 500mg MgO is actually only likely to provide around 15mg magnesium. Compare this is with the availability of Magnesium Aspartate at around 42%, Magnesium Citrate at 25%, Magnesium Amino Acid Chelate at 25% or Magnesium Orotate at 20% for example. Organic forms of Magnesium are better tolerated and better absorbed by the body.

Magnesium Organic Ultra-Absorption FX 1000 may be useful to support healthy heart function; muscle relaxation; sleep and relaxation; nervous system balance; PMS associated with cramps and changes in mood; anxiety, mood & irritability.



Take 1-2 tablets, or as prescribed by a healthcare professional. As magnesium may promote restful sleep it is suggested that tablets are taken in the evening.


Taking too much magnesium may lead to diarrhoea. More serious problems can develop with excessive magnesium intake from magnesium-containing laxatives. However the amounts of magnesium found in nutritional supplements are unlikely to cause such problems.

People with kidney disease should not take magnesium supplements without consulting a doctor. 

Magnesium has a range of beneficial and adverse interactions with various medications so if you are taking a medication you should check with your health professional before taking it. 


  • Magnesium Citrate (providing 70mg elemental magnesium)  451.61mg
  • Magnesium Amino Acid Chelate (providing 80mg elemental magnesium)  400mg
  • Magnesium Orotate (providing 5mg elemental magnesium)  76.92mg
  • Magnesium Aspartate (providing 5mg elemental magnesium)  66.76mg
  • (Total elemental magnesium 160mg)
  • Pyridoxine Hydrochloride  5mg
  • Selenium (as Selenomethionine)  75mcg
  • Vitamin D3 100iu

Superior Low Allergy Formulation:

Free from added sugars, yeast, starches, gluten, wheat, corn or other cereals, dairy products, colouring, preservatives, or artifical flavours.


Each Sanderson product bears the signature of Warren Sanderson, one of the original founders, and represents an assurance of quality. Their range includes: probiotics, multivitamins and homeopathic sleep supplements. They also have a range for children that includes the Smarty Fish – One-a-day, rich in omega-3 and colostrum, which may help with brain and physical development.

Superior Organic Iron is another highly reviewed product and helps with increasing deficient iron levels, which may help improve stamina levels and mental activity.

You may like to see more of our leading brands here.

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Customer Reviews

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Items 1 to 10 of 51 total

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Excellent Review by
  • star

My husband was having trouble sleeping,due to restless legs .He takes 2 at night and falls asleep great price .

Excellent Review by
  • star

I take 2 tablets before going to bed each night and I am them able to sleep without cramp. Highly recommanded.

Really pleased with this magnesium Review by
  • star

I am really glad to find a good magnesium product.I can get restless legs at night and this stops that.I highly recommend this one.

Good stuff Review by
  • star

I'm a regular taker of magnesium as I get cramps at night when sleeping, have found Magnesium FX 1000 is very good as I am not getting cramps anymore. I also take a smaller dose in the morning and at lunch time,great for nervous system as well. Its worth a try if you suffer from cramps.Give it a go.

The Best Magnesium Review by
  • star

I have tried many magnesium to help me sleep. I take two in the morning and two tablets at night. Excellent product and yes I think it is better absorbed than other magnesium.

The best magnesium I've used Review by
  • star

I switched to this from another brand, this one seems to be better absorbed and I find I can use less to prevent the night cramps in my legs and feet.
Great stuff!

Really good product Review by
  • star

It is always tricky to know what the contributing factors to a good night sleep are; not too much stress during the day; time to process and unwind; enough sunshine; supplements etc. I have been using Magnesium supplements for many years and have found this product to be very good.It seems consistent in its delivery. What I especially like is that 1 tablet a night seems to really do the job!

Fantastic Review by
  • star

Love this product. It helps me relax at night and I get to sleep a lot better.

easily absorbed and good to add to plant/nut milks Review by
  • star

I make my own nut milks and supplement each bottle I make with ground-up tablets mixed into it - these easily absorbed magnesium tabs combined with calcium (I use Thompsons). I add one calcium to one and a half magnesium as calcium and magnesium work together.

Awesome Review by
  • star

Relieves cramp immediately. I do a lot of diving and find that after diving and mammalian diving reflex has resulted in an electrolyte deficiency, one Tablet of Magnesium FX1000 will relieve any cramp immediately.

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Product Highlights


  • healthy heart function
  • muscle relaxation
  • sleep and relaxation
  • nervous system balance
  • PMS associated with cramps and changes in mood
  • anxiety, mood & irritability.


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