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Magnesium Glycinate vs Magnesium Threonate: What’s the Difference?

Magnesium glycinate vs magnesium threonate each serve unique purposes: glycinate is valued for its calming effects, aiding with stress, sleep, and muscle relaxation, while also being easy on the digestive system. On the other hand, magnesium threonate specifically targets cognitive function due to its ability to cross the blood-brain barrier, making it a solid choice for memory support and brain health. For those looking for general relaxation, glycinate is typically more suitable, whereas threonate is often preferred for cognitive benefits and long-term mental clarity.

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We all know magnesium is important for numerous bodily functions, but the form in which you take it can significantly impact its effectiveness. Magnesium glycinate and magnesium threonate are two specific types that serve different purposes. Glycinate is known for its calming effect, commonly used to help with stress, sleep, and muscle relaxation. It’s easily absorbed and gentle on the digestive system, making it a reliable choice for general magnesium supplementation.

Magnesium threonate, on the other hand, is specifically formulated to support cognitive function. Its unique ability to cross the blood-brain barrier has made it the focus of research into improving memory and learning. By increasing magnesium levels in the brain, threonate may help enhance neuroplasticity and long-term cognitive health.

Understanding how these two forms work can provide clarity when choosing the right one for your specific health needs.

What is Magnesium Glycinate?

Magnesium glycinate (also known as magnesium bisglycinate) is magnesium bound to glycine, a non-essential amino acid. This form is known for its gentle effect on the stomach and its calming properties.

  • Absorption: Magnesium glycinate is highly bioavailable, meaning it is well absorbed by the body. It's one of the least likely forms to cause digestive upset like diarrhea, which is common with other forms of magnesium.
  • Best for: Stress reduction, anxiety, sleep support, muscle relaxation, and general magnesium supplementation.
  • How it works: The glycine component helps promote relaxation and sleep, making this form a go-to for people looking for help with insomnia, stress, or muscle tension.

What is Magnesium Threonate?

Magnesium threonate is a newer form of magnesium supplement. It’s magnesium combined with threonic acid, a metabolite of vitamin C. This form is prized for its ability to cross the blood-brain barrier, making it particularly beneficial for brain health.

  • Absorption: Magnesium threonate is specifically designed to enhance cognitive function. It has a unique ability to penetrate the brain, which is why it’s often recommended for improving memory and brain function.
  • Best for: Cognitive support, memory enhancement, learning, and potentially preventing age-related cognitive decline.
  • How it works: Studies suggest that magnesium threonate can elevate magnesium levels in the brain, which may enhance neuroplasticity, the brain’s ability to adapt and form new neural connections, particularly as we age.

Feature Comparison At A Glance: Magnesium Glycinate vs Magnesium Threonate

Feature

Magnesium Glycinate

Magnesium Threonate

Absorption

High bioavailability, gentle on the stomach

Designed to cross the blood-brain barrier

Best For

Stress relief, anxiety, muscle relaxation

Cognitive support, memory, brain health

Side Effects

Low risk of digestive issues

Typically well-tolerated, but can be more expensive

Common Uses

Sleep aid, muscle recovery, mood stabilization

Enhancing memory, improving learning, neuroprotection

 

Benefits of Magnesium Glycinate

Calming Effects
Magnesium glycinate is often praised for its calming properties, largely due to the presence of glycine. Glycine, an amino acid, acts as a neurotransmitter in the brain, promoting relaxation and reducing anxiety. This makes magnesium glycinate an excellent choice for individuals dealing with stress or who need help calming their nervous system. Its gentle, calming nature makes it less likely to overstimulate or cause the jitteriness that some other supplements can.

Improved Sleep Quality
Magnesium glycinate is also frequently used as a sleep aid. Magnesium plays a crucial role in regulating neurotransmitters that promote restful sleep, such as gamma-aminobutyric acid (GABA). By increasing GABA activity, magnesium glycinate helps the body transition into a more relaxed state, which can result in better sleep quality. Many people turn to this form of magnesium for help with insomnia or simply to improve their overall sleep cycle without relying on prescription sleep aids.

Muscle Health
Magnesium is essential for healthy muscle function. It helps to regulate muscle contractions and prevent cramps and spasms. For individuals who experience frequent muscle cramps—whether from exercise, prolonged sitting, or even during sleep—magnesium glycinate can offer relief. It supports the proper balance of calcium and magnesium in muscle tissue, which helps muscles contract and relax efficiently.

Digestive Health
One of the standout benefits of magnesium glycinate is that it is gentle on the stomach. Unlike other magnesium supplements that can lead to digestive issues such as diarrhea, magnesium glycinate is well-tolerated, even in higher doses. This makes it a good option for those who need to boost their magnesium levels but are sensitive to other forms that tend to cause gastrointestinal distress.

Benefits of Magnesium Threonate

Cognitive Health
Magnesium threonate has gained attention for its ability to directly increase magnesium levels in the brain. Unlike other forms of magnesium, threonate crosses the blood-brain barrier more effectively, making it a valuable tool for enhancing cognitive function. By increasing brain magnesium, it may improve memory, learning, and focus. This makes it particularly useful for individuals looking to support mental clarity, whether it’s for everyday cognitive performance or age-related cognitive decline. As magnesium is critical in synaptic plasticity, which is essential for learning and memory, threonate’s ability to increase these levels can have noticeable benefits in these areas.

Neuroprotection
Beyond just improving cognitive function, magnesium threonate may also provide neuroprotective benefits. Studies suggest that raising magnesium levels in the brain can enhance neuroplasticity—the brain’s ability to form and reorganize synaptic connections, especially in response to learning or after injury. This means magnesium threonate could help protect the brain from damage and aid recovery from injuries like concussions or strokes. Increased neuroplasticity also supports overall brain health, potentially slowing or preventing the natural cognitive decline associated with aging.

Potential in Alzheimer's Research
Magnesium threonate has shown promise in early studies related to Alzheimer's disease and other forms of cognitive impairment. Preliminary research suggests that increasing brain magnesium levels with threonate could help slow down the progression of these neurodegenerative diseases. While more research is needed to fully understand the extent of its effects, the current studies are promising, indicating that it may play a role in reducing the severity of symptoms and possibly delaying the onset of cognitive decline associated with Alzheimer's.

Magnesium Glycinate vs Magnesium Threonate: Which One Should You Choose?

  • For General Magnesium Deficiency: Magnesium glycinate is a solid choice for most people looking to address a magnesium deficiency. It’s well-tolerated, easy to absorb, and has a calming effect, making it ideal for stress, sleep, and muscle health.
  • For Brain Health: Magnesium threonate is the best option if you’re specifically looking for cognitive benefits. Its ability to cross the blood-brain barrier makes it a targeted supplement for improving memory and protecting against age-related cognitive decline.
  • For Sleep: Magnesium glycinate may have an edge due to the calming properties of glycine, which aids in better sleep quality.
  • For Cognitive Function: Magnesium threonate wins here, given its specific role in brain magnesium levels and neuroplasticity.