NOT ALL MULTIVITAMINS
ARE CREATED EQUAL
Most high-street multivitamins use magnesium oxide and zinc oxide — mineral forms with lower bioavailability. That means a significant portion of what you swallow passes straight through.
£17.99

ENGINEERED FOR MEN. NO MARKETING.
Stop flushing money (and minerals) away. MenTools One-a-Day replaces cheap oxides with high-absorption chelated minerals and active vitamins your body actually uses. Engineered for energy, testosterone support, and focus—with 11 EU-authorized health claims.
FULL 30-DAY SUPPLY | IRON-FREE | 100% VEGAN

Most high-street multivitamins use magnesium oxide and zinc oxide — mineral forms with lower bioavailability. That means a significant portion of what you swallow passes straight through.

Most generic formulas include iron — which most men already get enough of from diet. The NHS notes excessive iron intake can be harmful for men. They focus narrowly on “energy” while ignoring mental performance, cognitive function, and the nutrients men specifically need.
One A Day replaces cheap oxides with high-absorption chelated bisglycinate minerals and active B-vitamins (methylcobalamin, P-5-P, 5-MTHF) that are ready to use with no conversion required. Vitamin D3 at 500% NRV from vegan lichen, paired with K2 MK-7 the partner most multivitamins leave out entirely.
One Capsule. Everything Your Body Actually Uses.
Who it s for, why it s different, and how one capsule covers your foundation.
Every ingredient is selected for absorption, efficiency, and real impact — not just label appeal.



Every ingredient chosen for a reason. Chelated minerals, active vitamins, and exact doses — no proprietary blends, no hidden numbers.



6 nutrients in this capsule are authorised for claims around mental performance, cognitive function, psychological function and fatigue reduction. That’s not marketing — that’s what men need.

Here’s what it looks like when you put One A Day next to what most men are currently taking. Competitor data from publicly available labels, April 2026.

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Different stage. Different priorities. Same daily foundation.



Results vary between individuals depending on baseline nutrient status, diet and lifestyle.

Water-soluble B-vitamins replenish relatively quickly with consistent daily intake.
Magnesium and zinc stores may begin normalising. Research associates adequate magnesium status with improved stress resilience.
Studies on zinc supplementation in men with low zinc status have measured changes in testosterone markers after 3–6 months.






