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Blackmores Bio Magnesium

Bio Magnesium

A small, high dose magnesium tablet to support normal muscle function.

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Blackmores Bio Magnesium conveniently supports normal muscle function and may help prevent muscle cramps and spasms, in a high strength one-a-day dose.

Why use

  • May assist in the prevention of muscular cramps and spasms
  • Great for people who exercise regularly

The Blackmores difference

Blackmores Bio Magnesium is formulated with a combination of two forms of magnesium plus extra nutrients including vitamins B, & D. Formulated to assist in the prevention of muscular cramps and spasms.

It uses premium quality ingredients to deliver a high dose (300 mg) of magnesium plus co-factors to support increased absorption; all in one small, easy to swallow tablet a day.

Active ingredients per tablet

Magnesium oxide-heavy
(magnesium 265 mg)

440 mg

Magnesium phosphate
(magnesium 36 mg)

175 mg



Magnesium is an essential nutrient that plays a role in over 300 enzymatic reactions in the body and plays a role in a large number of biological processes. Magnesium containing foods include green leafy vegetables, nuts, cocoa and whole grains.

Calcium ascorbate dihydrate
(ascorbic acid, vitamin C 38.4 mg)

50 mg

Vitamin B6


Pyridoxine hydrochloride (vitamin B6) is a water-soluble nutrient involved in the production of proteins, neurotransmitters and haemoblobin. Whole grains, legumes, bananas, seeds, nuts and potatoes are good sources of vitamin B6.

(vitamin D3 100 IU)

2.5 µg



Manganese is an essential trace mineral that is a co-factor in many of the body's enzymes, including superoxide dismutase. Manganese can be found in hazelnuts, blackberries, pineapple, lentils, beans and whole grains.


Adults and children over 9 years - Take 1 tablet a day with a meal, or as professionally prescribed

Contraindications and cautions

  • WARNING - This product contains Pyridoxine hydrochloride which may be dangerous when used in large amounts or for a long time
  • Pyridoxine-induced peripheral neuropathy is most commonly reported with doses of 1 g or more daily, taken for 2 months to 3 years
  • If symptoms persist, see your healthcare professional
  • Vitamins and minerals can only be of assistance if dietary intake is inadequate

Medicine interactions

This product may interfere with certain other medications you may be taking. Click here to learn more.

Physical description

A white, medium capsule shaped tablet with a break bar.
Always read the label. Use only as directed.

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Why do a lot of your products contain high amounts of vitamin B6 ( Pyridoxine hydrochloride) ? , Much higher than the recommended daily intake and at levels that if used over a long period of time could possible cause nerve damage
luke 29 Jun 2018
How come I can buy your own product cheaper at Chemist Warehouse - 200 tablets for $26.99? Seems ridiculous to me!
Paula 17 Jan 2017
Is this product okay for those with sulphite/sulphur reactions?
Lia Inmtousley
Lia Inmtousley 05 Nov 2015
Can I take this along with a multi vitamin and a hair,skin, nails supplement?
Anonymous 15 Oct 2015
I have accidently taken two tablets in one day, will this cause any harm?
Anonymous 12 Oct 2015
Can this tablet be crushed? I find it difficult to swallow.
Anonymous 08 Oct 2015
Hi, Can you create an Mg product for elderly but reduce or even completely remove the B6 component so that the product is safe to use every day indefinitely? There are warnings about prolonged daily use of B6 since it comes with side effects.
Anonymous 24 Sep 2015
Is this the same as Super Magnesium+? Ingredients seem to be the same
Anonymous 02 Jul 2015