Free UK delivery on orders over £50Doctor-guided selectionReviewed by a GMC-registered clinicianBuy 3, get 1 free on selected supplementsFree UK delivery on orders over £50Doctor-guided selectionReviewed by a GMC-registered clinicianBuy 3, get 1 free on selected supplements

Why The Wellness recommends this

Curated, not stocked.

Magnesium is one of the few supplements our clinicians recommend across multiple use cases — muscle recovery, sleep, stress — because the underlying physiology genuinely supports each one. TRACE specialises in mineral-focused formulations, and sourcing magnesium from trace minerals rather than synthetic salts aligns with the approach we look for. We recommend confirming your baseline via a blood panel before committing to long-term supplementation.

About this product

Mega-Mag

Mega-Mag by TRACE is a magnesium supplement sourced from trace minerals. Magnesium is one of the most studied micronutrients in sports and general health: it functions as a cofactor in hundreds of enzymatic reactions, with particular relevance to muscle contraction and relaxation, nerve signalling, energy metabolism, and sleep regulation. Deficiency is common, especially in people under physical or psychological stress, those who train regularly, and individuals with diets low in leafy greens, nuts, and wholegrains.

This product sits within TRACE's performance pillar, making it a sensible option for athletes in heavy training blocks, people experiencing muscle cramps or tension, or anyone whose blood work has flagged low magnesium. It also suits those who struggle with sleep onset or restlessness at night, since magnesium is studied for its role in supporting the nervous system's shift into a more relaxed state.

Magnesium sourced from trace minerals typically refers to ionic forms drawn from mineral-dense water or brine, which may support absorption compared to some oxide forms. As with all magnesium supplements, individual response varies depending on baseline status and the form used. A blood test remains the most reliable way to confirm whether supplementation is warranted for you.

What it does

Benefits

  1. 01

    Supports muscle relaxation and may ease cramping

  2. 02

    Studied for role in sleep onset and quality

  3. 03

    Contributes to normal energy-yielding metabolism

  4. 04

    Relevant for those with low dietary magnesium intake

  5. 05

    Suited to athletes in sustained or heavy training

Get the most from it

How to use

Follow the dosage directions on the packaging. Magnesium is generally better tolerated when taken with food, and many people find an evening dose suits them well given its association with relaxation and sleep support.

What's inside

Ingredients

View full ingredient list

Magnesium from trace minerals

Common questions

Frequently asked

How do I know if I need a magnesium supplement?

The most reliable way is a blood test. Common signs of low magnesium include muscle cramps, poor sleep, fatigue, and irritability, but these are non-specific. A clinician can interpret your levels in context and advise whether supplementation is appropriate.

Is this suitable for people who exercise regularly?

Magnesium losses increase with sweat and physical exertion, making regular exercisers a group who may benefit from supplementation. It is particularly relevant during heavy training blocks where muscle recovery and sleep quality are priorities.

Can I take this alongside other supplements?

Magnesium is generally well tolerated alongside most common supplements. However, it can interact with certain medications, including some antibiotics and diuretics, so check with a pharmacist or your GP if you are on prescription medicines.

What is the difference between magnesium from trace minerals and standard magnesium oxide?

Trace mineral-sourced magnesium typically provides ionic magnesium in forms that may be more readily absorbed than magnesium oxide, which has a relatively low bioavailability. Check the packaging for the specific form and concentration used in this product.

When is the best time of day to take it?

Many people take magnesium in the evening given its association with relaxation and sleep support, though timing can depend on personal preference and tolerance. Taking it with food reduces the chance of digestive discomfort.

Doctor-guided care

Performance has a baseline.

Body composition, hormones, VO₂ max — we measure them all. Train against the picture, not against guesswork.

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TRACE Mega-Mag

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