If you've ever stood in the supplement aisle trying to pick a magnesium for yourself, you'll know how the shelves are organised: pink packaging, female silhouettes, "for women" stamped across the front. Most of the time, the actual formulation is identical to the unisex version next to it, plus a 30% markup.

The truth is plainer. Magnesium is magnesium. What changes between products isn't gender — it's the form, the dose, the co-factors and the quality. What changes between women and the rest of the population isn't the mineral itself — it's the contexts in which it matters most: dietary intake gaps, cycle-related shifts in nutrient needs, pregnancy and breastfeeding, and bone health across mid-life and beyond.

This is a guide to picking a magnesium that actually does the job — useful at twenty-five, at forty-five, and at sixty-five. No pink tax. No pseudo-feminine marketing. Just the criteria that matter.

A few things are true on average for women that change the magnesium picture.

Dietary intake tends to be lower. Population surveys in the UK and US consistently find women come up short of the magnesium reference intake more often than men. Smaller portion sizes are part of it. Modern food processing — which strips magnesium out of grains in particular — is the other part.

Active losses still apply. Women who train, run, lift or cycle lose magnesium through sweat and increased urinary excretion in the same way men do. The 20% increased demand of regular training applies regardless of gender.

Life-stage shifts increase demand. Pregnancy raises magnesium requirements. Breastfeeding maintains them. Post-menopause, bone health becomes a more pressing reason to keep magnesium and vitamin D status adequate — both contribute to bone maintenance.

The result is a population where daily magnesium supplementation makes practical sense for more women than men, more consistently, across more life stages. The supplement itself isn't gendered. The use case is.

Six things separate a useful daily magnesium from an expensive shelf-filler.

1. The form (or, ideally, forms)

Magnesium is always bound to something — an amino acid, an organic acid, a mineral salt, or a natural complex. The binding partner determines how well it absorbs and what it does in the body.

Forms worth taking:

• Glycinate — well absorbed, gentle on the gut, supports relaxation and the nervous system. The best-tolerated form and the one most often recommended for sleep and stress.

• Malate — well absorbed, supports energy production via the Krebs cycle, useful for daytime energy and reduction of fatigue.

• Taurate — supports cellular and metabolic function.

• Aquamin — a multi-mineral complex from red seaweed; delivers bioavailable magnesium plus 72 trace minerals.

Forms to be cautious of:

• Oxide — cheap, very poorly absorbed (around 4%). Common in mass-market multivitamins and budget magnesium products.

• Citrate — reasonably absorbed but has a well-known laxative effect at supplement doses. Useful for occasional constipation; not what you want as a daily mineral.

A blend of the four useful forms covers more ground than any single one. Our full breakdown is in the types of magnesium guide.

2. The elemental magnesium dose

The number that matters isn't "1000mg of magnesium glycinate." It's the elemental magnesium per serving — how much actual magnesium your body sees.

Look for around 375mg of elemental magnesium per daily serving. This is 100% of the EU Nutrient Reference Value, sits within safe supplemental ranges for long-term use, and provides enough to meaningfully top up the dietary gap most women have. Lower doses (50–200mg) won't move the needle. Higher doses move into territory where digestive tolerance becomes a real factor.

4. The format

Capsules, tablets, gummies and powders all work in principle. Practically:

• Capsules offer the cleanest dosing and the simplest ingredient list. Easy to swallow if size is reasonable.

• Tablets are common but often packed with binders and coatings to hold them together.

• Gummies rarely deliver a full daily dose — they're a low-magnesium format dressed as a treat. Often loaded with added sugar.

• Powders work for some, but the most absorbable forms (glycinate especially) taste bitter and tend to be blended with flavour systems.

For most women, a capsule format is the cleanest route.

5. The clean-label test

Read the ingredients list. If you can't pronounce it and it isn't there for a clear functional reason, ask why it's in your daily mineral.

What you want to see: the four magnesium forms, their elemental contribution, the vitamins, any functional botanicals, the capsule shell, and nothing else.

What you don't want to see: artificial colours, sweeteners, preservatives, anti-caking agents you don't recognise, "proprietary blends" that hide the dose, generic "magnesium" without the form specified.

6. Vegan, gluten-free, allergen-clear

Most modern formulations should meet this baseline. If they don't, there's no good reason — vegan and gluten-free magnesium supplements are no harder to make and no more expensive than the alternative.

The criteria above are the same regardless of age. A few additional notes for specific stages.

Twenties and thirties. Daily magnesium is mostly about closing the dietary gap, supporting energy and the nervous system, and matching the demands of an active life. The full-spectrum complex is the right choice — covers training recovery, sleep quality and daily energy in one.

Pregnancy and breastfeeding. Magnesium needs increase during pregnancy, but this is a stage where supplement choice should be GP-led. Speak to your GP or midwife before starting or changing any supplement.

Forties and perimenopause. Sleep quality and energy stability often become more variable in this stage. Daily magnesium with vitamin D and B vitamins supports the systems that influence both — though we don't make therapeutic claims here. If you're managing specific symptoms, your GP is the right starting point.

Fifties, sixties and beyond. Bone health becomes a more central reason to keep magnesium and vitamin D status adequate. Both contribute to maintenance of bones, and the two work together — magnesium activates vitamin D, vitamin D supports magnesium absorption. A complex that includes both is more useful than supplementing either alone.

MagnesiumPro is built around the criteria above — not retrofitted for marketing.

• Four forms of magnesium: malate, glycinate, taurate and Aquamin

• 375mg of elemental magnesium per daily serving (100% NRV)

• Plant-based vitamin D3, B6 and B12 — the co-factors that make magnesium work

• Functional botanicals: ginger, turmeric and black pepper extract

• Clean label: no fillers, no artificial additives, vegan, gluten-free

• Capsule format: three plant-based pullulan capsules per daily serving

It's a supplement we'd recommend to any active adult, gender aside, and one that holds up across most of the life stages above. Where it doesn't apply: pregnancy and breastfeeding, where we'd point you to your GP first.