In the world of food supplements, magnesium holds a special place: it is the undisputed champion of self-medication sales. Yet behind what looks like a “reflex” purchase hides a consumer who is increasingly expert and selective. Here is what our latest studies at SYRES taught us.
The figures speak for themselves: in our panels, 1,499 users out of 2,135 say they take magnesium. One might assume an automatic, almost indifferent purchase. On the contrary, magnesium has become the marker of a new market maturity. The more a product becomes part of everyday habits, the more the consumer refines their judgement criteria. They are no longer looking for “some magnesium”; they are looking for an effective solution that fits into their life.
Our studies show that expectations are no longer vague. They crystallise around four major requirements:
- Reputation: a recognised brand, a guarantee of safety and seriousness.
- Compliance: a format and a dosing routine easy to fit into an often busy day.
- Concentration: a high active content to justify the investment.
- Technicality: a clear perception of bioavailability (the consumer wants the product to “reach its destination”).
What this success teaches us is that the battle is no longer won on the mere presence of an ingredient in the formula. It is won on user experience.
On products like magnesium, the difference is no longer made by the ingredient, but by the way the product is understood and evaluated over time.
At SYRES we explore this grey zone. Our tests do not merely measure purchase intent. They analyse how the product survives the test of daily life: is it easy to digest? Are its effects felt quickly enough? Is the bioavailability promise perceived?
Magnesium is the perfect example of a product that, by becoming commonplace, has raised the overall level of expectation. For brands, this means transparency and proof of efficacy through consumer testing have become indispensable to stand out. Do not leave user experience to chance: whether you need to validate a new format or prove the perceived efficacy of your actives, our protocols adapt to real-life conditions.
Originally published in French by SYRES France on 18 February 2026: read the original article.
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