MagActive powder
"This product is great and is the only product that I have found that actually works to massively decrease the amount of leg cramps I have been experiencing in the last few years."
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Always read the label and follow the directions for use. Read the warnings before purchase.
SKU MAR210
SKU MAR210
Formerly Fibroplex MagActive.
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Always read the label and follow the directions for use. Read the warnings before purchase.

MagActive™ Muscle is neutral flavoured for versatile blending and is an easy way to provide magnesium supplementation. It contains Magnesium Glycinate, an exclusive form of magnesium with enhanced bioavailability.
MagActive™ Muscle supports muscle relaxation and reduces muscle cramps, when dietary magnesium intake is inadequate. The ingredients in MagActive™ Muscle, which include activated vitamin B6 and vitamin B12, help to support energy levels, maintain a healthy stress response and maintain healthy muscle and nerve function.
Adults 19 years and over: Add 1 level scoop (7g) in 200mL of water or juice twice daily, or as directed by your healthcare professional.
Stop taking this medication if you experience tingling, burning or numbness and see your healthcare practitioner as soon as possible. [Contains vitamin B6].
This medicine contains selenium which is toxic in high doses. A daily dose of 150 micrograms for adults of selenium from dietary supplements should not be exceeded. Vitamin and mineral supplements should not replace a balanced diet.
Contains 52mg potassium per 7g dose.
This product is sold by weight not volume. Some settling may occur
If symptoms persist consult your healthcare professional.
Store below 30°C.
MagActive® – Magnesium bisglycinate
Acetyl-L-Carnitine
Glutamine
Taurine
Selenium
Activated B6 & B12
MagActive® Magnesium bisglycinate blend
Magnesium glycinate
1.3 gMagnesium glycinate dihydrate
1 gEquivalent Magnesium
300 mgTaurine
600 mgGlutamine
500 mgAscorbic acid (Vitamin C)
300 mgCalcium hydrogen phosphate dihydrate
269 mgEquivalent Calcium
63 mgMonobasic potassium phosphate
182 mgEquivalent Potassium
52 mgAcetyl levocarnitine hydrochloride (Acetyl-L-Carnitine)
118 mgPyridoxal 5-phosphate monohydrate (Vitamin B6)
50 mgNicotinamide (Vitamin B3)
50 mgRiboflavin sodium phosphate (Riboflavin 5-phosphate sodium)
2.4 mgEquivalent Riboflavin (Vitamin B2)
1.9 mgChromium nicotinate
250 microgramsEquivalent Chromium
25 microgramsMecobalamin (Vitamin B12)
150 microgramsSelenomethionine
62.5 microgramsEquivalent Selenium
25 microgramsFree from:
Excipients:
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This magnesium supplement helps reduce muscle soreness, improve recovery after exercise, and support healthy muscle function. It’s especially helpful for people who are active or play sports.¹ Magnesium is an essential mineral required for over 300 functions in the body, helping with sleep, energy, relaxation, premenstrual syndrome and muscle cramps.
References:
[1] Tarsitano MG, et al. J Transl Med. 2024 Jul 5;22(1):629.
Most people feel less muscle soreness and better recovery within 1 to 3 days of taking magnesium daily, especially after exercise.¹
References:
[1] Tarsitano MG, et al. J Transl Med. 2024 Jul 5;22(1):629.
You can take it daily during your active season or when you’re exercising a lot. It’s also okay to take breaks during the off-season if your diet has enough magnesium.¹
References:
[1] Tarsitano MG, et al. J Transl Med. 2024 Jul 5;22(1):629.
Magnesium bisglycinate is an easily absorbed form of magnesium (compared to other forms), so your body can utilise it more rapidly and effectively.
We created a neutral flavour for versatility, meaning the magnesium powder can be added into other flavoured blends, such as protein powder or even your morning green smoothie or juice!
At Metagenics, we use a specific form of high-quality magnesium known as magnesium bisglycinate. This form of magnesium is bound to the amino acid glycine, which improves its bioavailability and absorption. It is also gentler on the stomach and less likely to cause gastrointestinal upsets. However, some people may still experience loose stools or diarrhea when taking high doses of magnesium. If this happens, try reducing your dose by half, e.g. Instead of taking two serves per day, cut down to one serve. You can then gradually increase it over a week or two to find the optimal dose for you.
Yes, MagActive™ Muscle contains no animal products and is suitable for vegetarians and vegans.
Overall rating: 4.9375 / 5 from 16 reviews.
Review topics: [].
"This product is great and is the only product that I have found that actually works to massively decrease the amount of leg cramps I have been experiencing in the last few years."
— Herman (5/5)
"Good choice of daily magnesium for my husband. Never misses a day"
— Juliet L. (5/5)
"My feet were sooo sore ! Helped within a day"
— liz (5/5)
"Because it actually works for me"
— Steve C. (5/5)
"Sleep like a baby and has definitely helped with recovery from my 10km walks each day."
— Danielle P. (5/5)
"Ive been taking MetaRelax for 3mths now and my body tells me if I miss a day or two. The following are some of my symtons that have changed for the better. . . Restless legs x Sleeplessness x Trouble falling asleep x Stressed x I am enjoying the changes & benefits and will stay with this product!"
— Gwenda T. (5/5)
"Great for my muscles when playing sport"
— Sue D. (5/5)
"Easy to take"
— Annette V. (5/5)
"I’ve suffered restless legs on and off for years. Magnesium powder is easily absorbed and has worked for me. If I don’t take magnesium regularly the restless legs come back."
— Angela M. (5/5)
"I have been using magactive for a few months now and have noticed the difference, my energy levels and no cramping, training daily both cardio and strength"
— Jessica A. (5/5)
1. Souza ACR, et al. Nutrients. 2023;15(24):5127;
2. Euser AG, et al. Stroke. 2009 Apr 1;40(4):1169-75
3. Tarsitano MG, et al. Transl Med. 2024;22(1):629.
4. ABS Data, 2011-12