Magnesium is the supplement most adults are short on. It's also the supplement most people take wrong.
Walk into any drugstore and you'll find magnesium oxide on the shelf for five bucks. It says "magnesium" on the label. It's also barely absorbed, mostly used as a laxative, and won't do a thing for the reasons most people want magnesium in the first place.
Here's a clean breakdown of the four forms that actually work, what each does, and how to think about stacking them.
Why form matters
Magnesium has to bind to something to be absorbed. The thing it's bound to (the chelate) decides where the magnesium ends up in the body. Cheap forms bind to molecules that don't absorb well or that pull the magnesium straight through the digestive tract. Quality forms bind to amino acids that ferry the mineral into cells, across membranes, and into the tissues that need it.
Different chelates target different systems. There is no one perfect magnesium. There is a right form for the goal.
The four that earn shelf space
Magnesium Glycinate (or Bisglycinate)
Bound to: Glycine, an amino acid that's also a calming neurotransmitter.
What it's best for: Sleep, anxiety, GABA support, muscle relaxation.
Why it works: Glycine itself crosses the blood-brain barrier and binds to receptors that quiet the nervous system. The magnesium handles muscle relaxation and nervous system regulation. Stacked, the two work together to drop you into deeper sleep.
Note: A real magnesium bisglycinate has both molecules of glycine attached. Cheap "bisglycinate" is often magnesium oxide blended with free glycine, which performs nothing like the chelated version. Look for the words "fully reacted" or "true chelate" on the COA.
Best taken: Evening, 30-60 minutes before bed.
Magnesium L-Threonate
Bound to: L-Threonic acid, a vitamin C metabolite that's small and fat-soluble.
What it's best for: Memory, focus, brain plasticity, learning.
Why it works: L-Threonate is the only form proven in human trials to raise magnesium levels inside the brain itself. A 2010 study from MIT showed it improved synaptic density and learning in aging adults. Most other forms can't cross the blood-brain barrier efficiently.
Note: Threonate is expensive to produce. If a product lists a clinical dose (1500-2000mg of magnesium L-threonate compound, which delivers 144mg of elemental magnesium), you're looking at a serious formula.
Best taken: Morning or daytime, with food. Doesn't make most people drowsy.
Magnesium Malate
Bound to: Malic acid, a compound your mitochondria use directly to produce ATP (cellular energy).
What it's best for: Energy, fibromyalgia symptoms, daytime fatigue, exercise endurance.
Why it works: Malic acid is a key intermediate in the Krebs cycle, your body's primary energy production pathway. Pairing it with magnesium gives your cells both the chelated mineral and the substrate they need to make ATP. Studies on people with fibromyalgia show meaningful symptom relief at doses of 1000-1500mg of malate compound.
Best taken: Morning, on an empty stomach or with a light breakfast.
Magnesium Taurate
Bound to: Taurine, an amino acid concentrated in the heart and nervous system.
What it's best for: Cardiovascular function, blood pressure regulation, blood sugar control.
Why it works: Taurine itself supports calcium channel function in heart cells. Magnesium plays a similar role. Together, they regulate the electrical activity of the heart, support healthy vascular tone, and help moderate insulin sensitivity. Research on hypertensive adults shows blood pressure reductions with consistent supplementation.
Best taken: Evening, often paired with glycinate for a cardio-plus-calm combo.
How to think about stacking
For sleep and stress: Glycinate + Taurate in the evening. Glycinate puts you down. Taurate slows the heart rate enough to stay down.
For focus and energy: Threonate + Malate in the morning. Threonate sharpens cognition. Malate fuels the mitochondria.
That's the split we built into WOLV's two-bottle protocol. One bottle for the day, one for the night, each loaded with the forms that actually work for that window.
What to avoid
Magnesium Oxide. Roughly 4% bioavailable. Mostly a laxative. The default cheap-brand filler.
Magnesium Citrate. Decent absorption, but high doses cause loose stools. Fine for occasional use, not a daily mineral foundation.
"Magnesium Complex" with no breakdown. If the label doesn't say which forms and at what milligrams, assume it's mostly oxide. Proprietary blends hide bad chemistry.
The bottom line
Magnesium is one of the highest-impact, lowest-cost supplements you can stack. But only if you pick the form that matches the job. Glycinate and taurate for the calm. Threonate and malate for the work.
The label matters more than the price.
Shop DAY MAG and NIGHT MAG, our clinical-dose two-bottle protocol →
The Pack