Two supplements can both say “magnesium” on the label and behave completely differently in your body. Here’s why the form matters more than the milligrams — and why we build our complex around glycinate, malate and citrate instead of cheap oxide.
Magnesium is never sold on its own — it’s always bound to something else to make it stable. That “something else” decides two things: how much elemental magnesium you get per gram, and how much of it your gut can actually take up. Those two numbers pull in opposite directions, and that’s where most cheap supplements quietly fall down.
Magnesium oxide looks brilliant on paper. It’s roughly 60% elemental magnesium by weight, so a single small tablet can claim a big number. The problem is absorption: oxide is poorly soluble, and controlled studies have put its bioavailability in the low single digits — some as low as ~4%. A large “500mg” number that your body can’t use isn’t a bargain; it’s mostly destined for the toilet, which is also why oxide doubles as a laxative.
Magnesium glycinate (often listed as magnesium bisglycinate) binds magnesium to glycine, a small amino acid. Chelated this way, the magnesium rides through the gut wall more efficiently and tends to be far gentler on the stomach — far less of the urgency and loosening that high-dose oxide is famous for. Glycine itself is calming, which is part of why glycinate is the form so many people reach for in the evening.
Because different forms have different strengths, and we’d rather play to all of them:
One smart capsule, three jobs — calm, energy and everyday recovery — instead of one cheap salt doing none of them especially well.
Judge a magnesium supplement by its form and tolerance, not just the headline milligrams. We use chelated glycinate plus malate and citrate at 102% NRV so more of every capsule actually reaches your cells — no fairy-dusting, no filler, no laxative surprise.
For most people, yes. Magnesium oxide is high in elemental magnesium by weight but poorly absorbed and prone to a laxative effect. Glycinate is chelated to glycine, which makes it more bioavailable and much gentler on the stomach.
It is far less likely to than magnesium oxide or citrate at high doses. Binding magnesium to glycine makes it gentler on the gut, which is why it is a popular choice for daily and evening use.
It delivers magnesium at 102% of the NRV across three forms — glycinate, malate and citrate — in 90 capsules with zero fillers.