Cooper Complete Nutritional Magnesium Glycinate Review – Everything You Need To Know

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Cooper Nutritional Magnesium Glycinate offers a high amount of Magnesium (as Magnesium Glycinate) to help support bone health, energy production, heart health, and promote restful sleep health.

Magnesium is an essential nutrient for the human body thanks to its involvement in numerous body processes that help maintain health. Magnesium is involved in crucial functions in your body, including blood pressure regulation, muscle contractions, blood sugar control, brain function, and heart health, among others.

According to a study by the American Physiology Society, magnesium-based supplements have been proven to help with migraine, diabetes, chronic pain, heart disease, anxiety, and blood pressure. 

Although Magnesium is available in many food sources such as whole grains, vegetables, nuts, and beans, research shows that most people don’t get sufficient amounts from their diets. One of the most common supplements used to curb magnesium deficiency is magnesium glycinate.


Also referred to as magnesium diglycinate, this is a salt of glycine. It is one of the easier forms of Magnesium for your stomach to digest. Magnesium glycinate boasts exceptional absorption levels. This implies that your body can easily make the most of it once it gets ingested.

According to Cooper Complete Nutritional, Magnesium Glycinate is a highly versatile supplement used by nearly anybody. This is because it improves sleep and energy production and promotes better bone health, cognitive function, and optimal heart health. 

However, it is most suitable for older people simply because magnesium deficiency tends to increase with age.


Cooper Complete Nutritional supplements is a reputable company established in 1997 to help address weaknesses found in many supplements that were already on the market. 

When the line was initially released, it only featured two products. After more than two decades on the market, the company has grown into a line of more than twenty products, ranging from multivitamin products to a range of supplements with focused ingredients that help support skin, brain, joint, eye, and prostate health. 

The company’s primary mission is to help improve the quality and length of people’s lives, and their line of health supplements is a true expression of that mission.

How to contact Cooper Complete Nutritionals:

  • Address: 12330 Preston Road, Dallas, TX 75230
  • Email:
  • Phone: 888.393.2221 / 972.560.6307 Mon – Fri: 9:00 AM – 5:00 PM CST
  • Website:


Magnesium Glycinate contains the following active ingredients per serving (1 tablet):

  • Magnesium (as Magnesium Glycinate) 100 mg

Inactive ingredients include hydroxypropyl cellulose, ascorbyl palmitate, croscarmellose sodium, silica, carnauba wax, and coating (hypromellose and glycerin). 

The only active ingredient found in this dietary supplement is Magnesium (as Magnesium Glycinate). 

As earlier mentioned, Magnesium is a nutrient involved in numerous body processes, ranging from blood pressure and blood sugar levels to nerve function and brain health. What’s more, Magnesium mineral supports the making of bone, protein, and DNA. As such, your body requires Magnesium in large amounts.

Even though the best way to consume nutrients is in their natural forms, supplements are a great way to enhance your magnesium intake, especially if you are Magnesium deficient.

Energy production is a necessary body process that helps your body to function correctly. To produce the required energy, your body uses this mineral to convert the food you eat into fuel. Magnesium also boosts bone density. This critical mineral functions holistically with Calcium and Vitamin D to form strong and healthy bones.

You may already know that lack of adequate sleep can be a contributing factor in numerous health problems. Research has shown that you are increasingly likely to suffer from diabetes, heart disease, common cold, and flu if you are sleep deprived. Thankfully, the mineral can help alleviate sleeping problems, significantly improving your sleep in that matter.

Magnesium is also an important mineral for heart health function. It interacts with your heart in a variety of ways, and one way is allowing blood vessels to relax and pump blood at a relatively lower pressure. It is imperative to note that Magnesium is an essential electrolyte for optimal muscle function. 

Low electrolyte levels have been shown to increase the risk of muscle spasms and cramps. And because your heart is a muscle, a healthy electrolyte can promote healthy heart function.

Magnesium also plays a vital role in promoting healthy brain function. To be more precise, Magnesium acts as the gatekeeper for the NMDA (N-methyl-D-aspartate) receptors, which are found on the nerve cells and are vital for brain development, memory, and learning.

Are There Any Benefits of Taking Magnesium?

It promotes optimal heart health – Research has shown that higher levels of Magnesium showed a reduced risk of both heart disease and cardiovascular disease. Magnesium helps protect blood vessels by allowing them to relax and pump blood at a somewhat lower rate.

Supports better bone health – Magnesium also plays a significant role in the development of healthy bones. People having higher levels of Magnesium also have a higher bone mineral density. And this, in turn, may help minimize the risk of osteoporosis and bone fractures.

Enhances energy production – Magnesium also helps convert carbs and other foods into energy for your body. Magnesium deficiency has been associated with insulin resistance, which leads to fatigue.

Helps improve sleep – Magnesium plays a significant role in the regulation of sleep. Studies have proven that Magnesium helps promote muscle relaxation, decrease muscle spasms and leg cramps, reduce anxiety and tension, all of which can potentially keep you awake at night. And bearing in mind that it improves your sleep quality, magnesium glycinate may also help fight daytime fatigue and boost focus, memory, and focus.

May reduce blood pressure – Taking magnesium supplements may help lower blood pressure levels. Studies show that people with high blood pressure may experience improvements when supplementing with this mineral.

How Much Does Magnesium Glycinate Cost?

Magnesium Glycinate supplement not only boasts numerous health benefits but is also available at an affordable price. One bottle of this dietary supplement (120 tablets / 120 servings) is priced at $20.98. A “Subscribe & Save” option is also available at $19.93 per month. 

You can buy the product directly from the manufacturer’s official website (they offer free shipping for orders of two or more bottles) or from several online retailers.

Magnesium Glycinate Review – Pros & Cons


  • Supports proper bone health;
  • It helps convert carbs, and other foods, into energy for the body;
  • Supports heart health;
  • Improves melatonin regulation for better sleep cycles;
  • Non-GMO;
  • Physician formulated and made by a reputable company.


  • While affordable, it still is more expensive than other similar magnesium supplements;
  • Not available for purchase from some of the biggest online retailers like Amazon or Walmart.

Potential Side Effects

Most individuals don’t experience any side effects while taking Magnesium. In very rare cases, Magnesium might cause vomiting, stomach upset, diarrhea, and nausea. 

When taken in substantial amounts (greater than 350 mg daily), Magnesium is POSSIBLY UNSAFE. It may cause serious adverse effects, including low blood pressure, an irregular heartbeat, slowed breathing, and confusion.

Though magnesium supplements are generally considered safe, you should check with your healthcare provider before taking them, especially if you have a medical condition or under treatment with prescriptions. 

Magnesium may interact with some medications, especially with certain antibiotics, muscle relaxants, or high blood pressure medications.

Does Magnesium Glycinate Work?

One reason magnesium glycinate is a popular magnesium-based supplement is how easy it is for your stomach to digest. What this means is that the supplement will get absorbed in your bloodstream relatively fast. 

Users usually experience improvements in their overall health within three weeks. However, you’ll only see significant changes after taking Magnesium for at least 30 days.

Customer Testimonials

OneBrainReviews Avatar

This supplement has helped me to sleep more soundly than I have slept in my adult life. I thought I would always be a light and restless sleeper. Did not want to use sleep aid medications. I have been amazed at the difference Magnesium Glycinate has made (with no side effects). I have recommended it to several friends. It is a godsend for postmenopausal women.

Similar Products

Magnesium Glycinate made by Cooper Complete Nutritional looks like a decent magnesium-based supplement, but it’s not the only supplement of this type available on the market. In fact, similar products are sold by dozens of other supplement manufacturers. 

Here are three good alternatives to Magnesium Glycinate made by Cooper Nutritional. 

High Absorption Magnesium Glycinate Lysinate made by Doctor’s Best – This magnesium supplement is, without doubt, one of the most popular magnesium-based products on Amazon. Doctor’s Best is a trusted American brand that repeatedly proved that it could make both quality and affordable supplements. With 200 mg of Magnesium, High Absorption Magnesium Glycinate Lysinate made by Doctor’s Best is a potent formulation recommended to anyone looking for a magnesium-based supplement. 

Magnesium Glycinate made by Solaray – Solaray is another American company known for producing high-quality dietary supplements. Their Magnesium Glycinate offers 400 mg of Magnesium (as Magnesium Glycinate) for healthy relaxation and bone & cardiovascular support. Solaray’s formula is lab-verified for potency and purity.

Magnesium (Glycinate) made by Pure Encapsulations – This is another top-rated magnesium supplement. With an average rating of 4.8 out of 5 (6,000+ user ratings on Amazon alone), this formulation is designed for stress relief, sleep, heart health, nerves, muscles, and metabolism. Magnesium (Glycinate) made by Pure Encapsulations is suitable for vegans and vegetarians, is gluten-free, non-GMO, and hypoallergenic.

Bottom Line

If you are Magnesium deficient, magnesium glycinate offers you the best option to boost Magnesium in your body. Studies have proven that nearly 50% of people in the developed world fail to get enough Magnesium from their diet. Also, our stressful lives coupled with other medical conditions are only likely to deprive our body of this important nutrient.

Magnesium glycinate not only guarantees all the potential benefits of magnesium mineral, but it is also relatively more manageable for your body to absorb. What’s more, it is arguably the gentlest supplement on your stomach. 

As opposed to other Magnesium forms that can cause myriad unpleasant symptoms, magnesium glycinate is fairly safer. 

When used appropriately according to the manufacturer’s instructions, this excellent supplement will boost your cognitive function and promote better bone health, improve sleep, and boost energy production and optimal heart health.

Frequently Asked Questions

As a dietary supplement, adults take one (1) tablet, 1-2 times daily or as directed by your health care professional.

You can purchase Magnesium Glycinate from Cooper Nutritional’s official website ( or several online stores.

This form of Magnesium has a calming effect on your brain due to the presence of glycine. It helps keep bones strong by maintaining healthy bone density. It can also help promote better sleep and relieve anxiety.

Pregnant or nursing mothers should consult a healthcare professional before taking Magnesium Glycinate.

In general, it is recommended that users begin with the lowest suggested dose and gradually increase as needed. For general health, sleep, and stress, the recommended dose is between 100 and 250 mg of Magnesium daily.

To contact Cooper Complete Nutritional customer service, call 888.393.2221 or 972.560.6307 Mon – Fri: 9:00 AM – 5:00 PM CST or email them at

Cooper Complete Nutritional Magnesium Glycinate is not intended for children and adolescents under 18.


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