I Compared the Best Magnesium Glycinate Brands – Here’s What I Found

Do you want to buy Magnesium glycinate? It seems to be the trend now, all thanks to viral videos and posts sharing the benefits of this supplement.

This month alone, I’ve received ten emails from my blog readers asking me to look into the top magnesium brands; Orvela, FEELGOOD Company, SP Nutrition, Natrol and Nature’s Bounty.

Some wanted to know which one was the best, while others simply wanted to know whether the expensive ones were actually different from the cheaper ones.

So, here’s my honest take as a stay at home product analyst who spends her time researching and investigating product claims.

The best Magnesium Glycinate Brands

Nature’s Bounty is particularly interesting from a value perspective. Its High Absorption Magnesium Glycinate currently sells for around $15.97 for 120 capsules, with a 240 mg elemental magnesium serving. Amazon marketplace tracking shows a 4.7-star rating and roughly 6,000 reviews for the listing, although the exact review count changes constantly.

Natrol is also inexpensive by comparison. The 60-capsule version was listed at $12.49 on Amazon. Its capsule formulation provides 120 mg per capsule, meaning two capsules provide 240 mg.

Nature’s Bounty Magnesium Glycinate

This High Absorption Magnesium Glycinate provides 240 mg of elemental magnesium per two-capsule serving. There are 120 capsules in the bottle, which means it works for 60 servings.

Amazon marketplace data currently puts the product around 4.7 stars with roughly 6,000 reviews, giving it a much larger review footprint than some of the newer brands in this comparison.

Pros

• 240 mg elemental magnesium per serving
• Established supplement brand
• Large Amazon review history
• Straightforward capsule formulation
• Around $15.97 for 120 capsules
• Good price per serving

Cons

• Two capsules per serving
• Capsules won’t appeal to everyone
• A high Amazon rating does not prove that it treats insomnia or anxiety

Natrol Magnesium Glycinate

Natrol is another established name that doesn’t need to rely entirely on the current magnesium trend. Its magnesium glycinate capsules provide 120 mg per capsule, meaning two capsules provide 240 mg.

The current Amazon price I found was about $12.49 for 60 capsules, making it one of the cheaper options in this comparison.

Natrol also sells a 100 mg magnesium glycinate soft chew. That version contains 2 grams of added sugar per serving, so I would personally compare the label rather than assuming the chew is automatically a better option simply because it is easier to take.

Pros

• Established supplement brand
• 240 mg when taking two capsules
• Relatively inexpensive
• Capsule and chewable formats available
• Straightforward formulation

Cons

• Two capsules needed for 240 mg
• Chewable version contains added sugar
• The evidence for sleep benefits remains limited

FEELGOOD Company Magnesium Glycinate

FEELGOOD Company takes a slightly different approach, with a lower elemental magnesium amount than some of the other brands I compared.

The current formulation provides 125 mg of elemental magnesium per two capsules. The price I found was roughly $27 to $30, depending on the retailer and current offer.

That makes it considerably more expensive per amount of elemental magnesium than Nature’s Bounty or Natrol. That doesn’t automatically make it a bad product. But when I’m doing a value comparison, I have to mention it.

Pros

• Vegan capsule format
• Relatively simple formulation
• Lower dose may appeal to people who don’t want a high-dose supplement
• Established retail presence

Cons

• Only 125 mg elemental magnesium per two capsules
• More expensive than some established competitors
• Smaller independent review footprint
• Less compelling on price per serving

Orvela Magnesium Glycinate

Orvela provides 275 mg of elemental magnesium per serving, which is a substantial amount. The price I found varied considerably because the brand frequently uses promotional pricing, but it was roughly $25 to $40 depending on the offer and package.

Pros

• 275 mg elemental magnesium per serving
• Convenient capsule format
• Large volume of reviews displayed by the brand
• Competitive promotional pricing

Cons

• Very few consumer reviews
• More magnesium isn’t automatically better

SP Nutrition Magnesium Bisglycinate Gummies

If you hate swallowing capsules, I can understand the attraction here. SP Nutrition sells magnesium bisglycinate as gummies, which makes the product much easier for some people to take.

The issue I kept coming back to was the difference between magnesium bisglycinate and elemental magnesium.

The product’s headline figure is 400 mg of magnesium bisglycinate, while the two-gummy serving provides 72 mg of elemental magnesium.

The price I found was around $27, depending on the seller and current promotion.

Pros

• Convenient gummy format
• Useful for people who dislike capsules
• 72 mg elemental magnesium per two gummies
• Easy to incorporate into a routine

Cons

• The 400 mg headline can be confusing
• Only 72 mg elemental magnesium per serving
• Gummies contain additional ingredients
• More expensive per amount of elemental magnesium than some capsule options

What Exactly Is Magnesium Glycinate?

Magnesium glycinate, also called magnesium bisglycinate, is magnesium bound to the amino acid glycine. Magnesium itself is an essential mineral involved in more than 300 enzyme systems in the body. It contributes to normal nerve and muscle function, energy production, bone structure, blood glucose regulation and normal heart rhythm effects.

Benefits

If you are not getting enough magnesium, correcting that inadequate intake can obviously matter.

Magnesium is involved in normal muscle and nerve function, energy metabolism, bone health and electrolyte balance. Adults generally need around 310 to 420 mg of magnesium per day from all sources, depending on age and sex.

But there is a difference between saying magnesium is important and saying a magnesium supplement will improve every symptom you happen to have.

That distinction gets lost online. You will see magnesium glycinate promoted for sleep, anxiety, stress, muscle cramps, recovery, headaches, blood sugar and “cortisol.”

Frequently asked questions about Magnesium Glycinate

Is it Safe?

For most healthy adults taking appropriate amounts, magnesium supplements are generally considered safe.

But supplements aren’t automatically harmless just because magnesium is a nutrient.

Very high supplemental doses can cause diarrhea, nausea and abdominal cramping, while extremely high amounts can cause magnesium toxicity. The risk is particularly important for people with impaired kidney function because the kidneys remove excess magnesium from the body.

Magnesium can also interfere with the absorption of certain medications, including some antibiotics and oral bisphosphonates.

If you take prescription medication or have kidney problems or another medical condition, it is worth checking with your doctor or pharmacist before adding a magnesium supplement.

What are the symptoms of Magnesium Deficiency

Actual symptomatic magnesium deficiency is relatively uncommon in otherwise healthy people.

Early deficiency symptoms can include loss of appetite, nausea, vomiting, fatigue and weakness. More severe deficiency can cause numbness, tingling, muscle contractions and cramps, seizures and abnormal heart rhythms. Certain medical conditions and medications can increase the risk of magnesium inadequacy or deficiency.

But having trouble sleeping for three nights or feeling stressed does not automatically mean you have a magnesium deficiency.

Does Magnesium Glycinate actually work for sleep?

The answer is possibly, but the evidence isn’t nearly as definitive as social media makes it sound.

A 2026 systematic review of randomized controlled trials looked specifically at magnesium supplementation and sleep. It included 12 trials and found that results were inconsistent, with the certainty of evidence rated low to very low. The researchers concluded that current evidence does not support magnesium as a routine treatment for insomnia, although some people may experience modest improvements in certain subjective sleep outcomes.

So if somebody tells you:

“Magnesium glycinate will make you sleep better.” I’d say that is too bold a claim. But, if they say: ”Magnesium may modestly improve some sleep outcomes in some people, particularly where magnesium intake is inadequate.”

That is actually is much closer to what the evidence actually supports.

Does it work for anxiety?

There is some research suggesting magnesium supplementation may help certain anxiety symptoms, but I wouldn’t treat magnesium glycinate as an anxiety medication. The evidence is still developing, and studies vary considerably in their formulations, doses and participants.

Can Magnesium Glycinate Help With Muscle Cramps?

Magnesium is necessary for normal muscle and nerve function, and severe magnesium deficiency can cause muscle contractions and cramps. But having a cramp does not automatically mean you are magnesium deficient.There are many possible causes of muscle cramps.

Does Magnesium Glycinate supplements cause diarrhea?

It can.

Magnesium supplements are well known for causing diarrhea, nausea and abdominal cramping when taken in excessive amounts. The NIH notes that some magnesium forms are more commonly associated with diarrhea, including magnesium carbonate, chloride, gluconate and oxide.

Magnesium glycinate is generally considered a gentler form, which is one reason it has become popular. But “gentler” does not mean “impossible to upset your stomach.”

Your response will depend on the dose, your individual tolerance and other factors.

How Much Magnesium Should You Take?

The recommended daily intake for adults is generally around 310 to 420 mg depending on age and sex. However, the US National Institutes of Health sets the tolerable upper intake level for magnesium from supplements and medications at 350 mg per day for adults. Magnesium naturally present in food is not included in that upper limit.

That does not mean you should automatically take 350 mg of supplemental magnesium.

And it definitely does not mean that a product advertising “500 mg magnesium glycinate” necessarily contains 500 mg of elemental magnesium. That brings me to SP Nutrition.

SP Nutrition is a good example of why reading the Supplement Facts panel matters.

The product is marketed around 400 mg of magnesium bisglycinate, but that is not the same thing as saying the gummies contain 400 mg of elemental magnesium. The two-gummy serving provides 72 mg of elemental magnesium.

That’s a very different number. This isn’t necessarily a problem or proof of deceptive labeling. Magnesium bisglycinate is a compound, and the weight of the entire compound is different from the amount of actual elemental magnesium contained within it.

But as a consumer, you need to know which number you’re comparing.

Always compare elemental magnesium, not simply the largest magnesium number printed on the bottle.