Magnesium Citrate vs Glycinate vs Taurate: Which Magnesium Is Right for You?
Walk into any pharmacy and you'll find a wall of magnesium supplements, and the labels rarely make the choice easy. Citrate, glycinate, bisglycinate, taurate, oxide, "buffered"... they're not interchangeable. The form of magnesium affects how much your body actually absorbs, how gentle it is on your stomach, and what it's typically chosen for.
Here's a plain-English guide to help you pick the right one.
Why the form of magnesium matters
Magnesium never comes on its own in a supplement. It's always bound to something else, and that partner decides how well it dissolves and gets absorbed.
- Well absorbed: soluble forms such as citrate (a salt) and the amino-acid chelates, glycinate and taurate.
- Moderately absorbed: chloride and sulphate.
- Poorly absorbed on their own: insoluble forms such as oxide, carbonate and hydroxide.
Magnesium oxide is common in cheaper products because it packs a lot of magnesium into a small tablet. The catch is that much of it isn't absorbed, and what's left in the gut can have a laxative effect. Watch for the words "buffered" or "blended" on labels too, as these products often contain added oxide.
The main forms, side by side
Magnesium citrate
Magnesium bound to citric acid. It's well absorbed and well tolerated, and citrate plays a role in the body's energy-production cycle. It's often chosen for energy and everyday support.
Magnesium glycinate (bisglycinate)
Magnesium chelated with the amino acid glycine. Because it's absorbed using amino-acid pathways, it's known for being gentle on the stomach. Glycine itself is calming, which is why glycinate is a popular choice for relaxation, mood and sleep.
Magnesium taurate
Magnesium bound to the amino acid taurine. It's often chosen to support heart health, muscle function and leg cramps, and taurine also has antioxidant roles of its own.
Why combine forms?
Each form uses slightly different absorption routes, so combining them gives magnesium more ways into the body. That's the thinking behind Igennus Triple Magnesium Complex, which blends citrate, bisglycinate and taurate in one tablet, all fully reacted with no added magnesium oxide.
Igennus recently put it to the test. In an independent three-month home-use study, 75 adults aged 30–70 took Triple Magnesium Complex every day:*
- 88% noticed beneficial effects after three months
- 92% reported fewer muscle cramps
- 80% fell asleep faster
- 79% felt less stressed
- 77% reported more energy
- 95% rated it stomach-friendly
- 93% said they'd keep taking it
Split your dose: morning and night
This is the tip most people miss. Your gut can only absorb so much magnesium at once. The absorption pathways become saturated, and research suggests the body absorbs a higher proportion from smaller doses than from a single large one (above roughly 250 mg).
That's why Igennus recommends splitting your daily dose between morning and evening, taken with food. Two smaller doses give your body a steadier, more constant supply through the day and night, improve how much you retain, and are gentler on digestion.
With Triple Magnesium Complex, that's simple: one tablet with breakfast and one with dinner (262 mg of magnesium a day across the two).
If you'd rather keep it to one dose, taking it in the evening is a practical option, especially if relaxation and sleep are your goal. You'll just absorb slightly less than you would by splitting it.
How long before you notice a difference?
Magnesium isn't a quick fix. Your body stores most of its magnesium in bone and muscle, so topping up takes time. In the Igennus study the results built steadily:*
- 64% noticed benefits after 1 month
- 84% after 2 months
- 88% after 3 months
Our advice: give it the full three months before you judge it.
Quick chooser
- Want all-round support, or not sure where to start? Igennus Triple Magnesium Complex: citrate, bisglycinate and taurate together.
- Mainly after relaxation and better sleep? Igennus High Strength Magnesium Glycinate: a three-month supply of gentle, high-strength bisglycinate.
- Want magnesium teamed with zinc and B6? Igennus Neurobalance: high-absorption magnesium, zinc and vitamin B6 for the brain and nervous system, restful sleep and healthy hormones. Suitable for adults and children.
- For kids (4+) or if you hate swallowing tablets? Igennus Calm Magnesium Gummies with L-theanine and vitamin B6.
- Supporting bones? Igennus Calcium & Magnesium Algae Mineral Complex with vitamins D3 and K2.
- Stressed and stretched thin? Igennus Ashwagandha+ L-Theanine & Magnesium.
Frequently asked questions
Should I take magnesium with food?
Yes. Igennus recommends taking its magnesium supplements with food.
Can I take both Triple Magnesium tablets at once?
You can, and the evening is the best time if you do. Splitting them morning and night will give you better absorption and more even coverage through the day.
Can I get enough magnesium from food?
Nuts, seeds, leafy greens, whole grains, legumes and dark chocolate are all good sources. But food processing strips out magnesium, and compounds in tea, spinach and cereals can reduce how much you absorb, so many people fall short.
Is magnesium safe to take with medication?
Some medications, including acid reducers, diuretics and laxatives, affect magnesium levels, and magnesium can interact with others. If you take any medication, or you're pregnant or breastfeeding, check with your healthcare professional before starting.
*Self-reported outcomes from an independent 3-month consumer home-use test of Igennus Triple Magnesium Complex in 75 adults aged 30–70 (2026). Percentages reflect the number of respondents answering each question; some results cover all 75 participants, others smaller groups. Individual results may vary.
Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. Always read the label and use as directed.