Best Magnesium Supplement in 2025: Find Your Perfect Type

Magnesium plays a vital role in many bodily functions, from muscle relaxation to energy production and more. Finding the best magnesium supplement for your needs is no easy task, with the market saturated with many different types today.

Different products offer unique benefits and drawbacks, so we aim to help you understand these pros and cons and help you make an informed decision the next time you buy a magnesium supplement.

Our guide closely examines popular magnesium types and compares their benefits. It also explores some of the top brands of magnesium supplements in 2025, including six different types and all-in-one supplements like BIOptimizers Magnesium Breakthrough. So, let’s get started!

What Is the Best Magnesium Supplement in 2025?

Let's explore some top-notch magnesium supplements designed to help you unlock the benefits of the essential mineral:

1. BIOptimizers Magnesium Breakthrough - Best Magnesium Supplement Overall

Pros

• Vegan friendly

• Huge savings and freebies with bulk orders

• Earn $15 in BIObucks with subscribe-and-save option

• Certified by Informed Sport

Cons

• Free shipping is only available for bulk orders

Why Buy BIOptimizers Magnesium Breakthrough? 

For those seeking a quality magnesium supplement with a wide range of benefits, BIOptimizers Magnesium Breakthrough may have it all! For one, it is the best magnesium supplement for sleep on our list, and it also helps reduce stress while maintaining overall wellness. It has eight easily absorbable magnesium types and no artificial additives.

Price

• 1-month supply: $40 or $35 for subscribers

• 3-month supply: $99 or $87 for subscribers

• 5-month supply: $160 or $136 for subscribers

User Feedback

Amazon users are satisfied with BIOptimizers Magnesium Breakthrough, which promotes better sleep and reduces stress levels. Many report much-improved sleep quality alongside noticeable drops in their stress levels [3] [4]. However, some point out that this supplement is quite expensive for their liking [5].

>>BIOptimizers Magnesium Breakthrough from the official website

2. Akasha Naturals Magnesium Glycinate - Best Magnesium Supplement for Women

Pros

• You can pay in installments

• Third-party tested

• Suitable for vegetarians

• Dairy and gluten-free

Cons

• No subscribe-and-save option

Why Buy Akasha Naturals Magnesium Glycinate? 

If you're a woman seeking a magnesium supplement that's both gentle and effective, Akasha Naturals Magnesium Glycinate rises to the occasion. It includes just 100 mg of magnesium bis-glycinate, which is highly absorbable and less likely to cause digestive upset (like diarrhea), which can come with other forms of the mineral.

Price

• 1-month supply: $39.75

• 3-month supply: $79.50

• 5-month supply: $119.25

User Feedback

On the official product page, Tusahr praised its rapid absorption and effectiveness in addressing a severe deficiency. They described it as "the best Magnesium on the market" and expressed gratitude for the fast improvement in well-being. However, Kyla S. noted a drawback: she found the tablets a "little difficult to swallow [6]."

>>Buy Akasha Naturals Magnesium Glycinate here

3. Natural Stacks MagTech - Best Magnesium Supplement for Weight Loss

Pros

• 20% off when you subscribe

• 50% off + free U.S. shipping for the first order

• Convenient mobile app

• Open-source third-party test results

Cons

• Limited 30-day return/refund policy

Why Buy Natural Stacks MagTech? 

Aside from being a practical choice for maintaining cognitive health, Natural Stacks MagTech is the best magnesium supplement for weight loss. With three forms of magnesium, it offers a targeted trifecta designed to nourish your brain and heart while supporting your overall magnesium levels and fitness goals.

Price

• 1-month supply: $36.95 or $29.56 for subscribers

• 3-month supply: $99.77 or $88.68 for subscribers

• 6-month supply: $188.45 or $177.36 for subscribers

User Feedback

As reported by users on r/Supplements, many users like the product's ability to help them relax and improve cognitive function. Some comments also mention improved focus and help with nervousness, while a few complaints on Trustpilot mainly revolve around customer support [7] [8].

>>Buy Natural Stacks MagTech here

4. Ancient Nutrients Magnesium - Best Magnesium Supplement for Muscle Tension Relief

Pros

• Subscribers save 15% 

• Earn points with every purchase

• Manufacturer follows CGMP practices

• Third-party certified

Cons

• It may contain common allergens

Why Buy Ancient Nutrition’s Ancient Nutrients Magnesium?

Choose Ancient Nutrients Magnesium if you seek a holistic approach to magnesium supplementation and a muscle-building companion. It includes vitamin D3 and a superfood blend inspired by the traditional Chinese method (TCM) to support energy, resilience, and overall vitality.

Price

• 1-month supply: $29.95 or $25.46 for subscribers

• 3-month supply: $80.87 or $68.74 for subscribers

• 6-month supply: $152.75 or $129.84 for subscribers

User Feedback

Judy K. expressed satisfaction on the official website, saying that Ancient Nutrition is her "go-to" brand for herbal nutrition. Emphasizing magnesium's positive effects, Jamie shared a less favorable review. Although he acknowledged the product's high quality (consistent with other Ancient Nutrition products), it caused him significant bloating [9].

>>Buy Ancient Nutrients Magnesium from Ancient Nutrition

What Does Magnesium Do for the Body?

As mentioned, magnesium is essential for many bodily functions, so let’s list some of the most important ones! Firstly, it helps regulate muscle contractions, supports the immune system, and is critical for maintaining healthy bones [1]. Additionally, magnesium helps in protein synthesis, enzyme functioning, and blood sugar regulation. 

When Is the Best Time to Take a Magnesium Supplement?

The timing can undoubtedly impact a supplement’s effectiveness. Taking magnesium in the evening is your best bet for general health and relaxation. However, taking magnesium during the day may be more effective if you're using it for digestive health. 

Check out the dosage instructions provided by the manufacturer and consult a healthcare provider for personalized advice when unsure​.

Signs of Magnesium Deficiency

Lack of magnesium can lead to various symptoms, including muscle cramps, fatigue, irritability, or irregular heartbeats [2]. Additionally, many believe prolonged magnesium deficiency can lead to mental disorders, osteoporosis, and even an increased risk of heart disease. 

For obvious reasons, older people, those with gastrointestinal diseases, and people with diets low in magnesium-rich foods​ are all at greater risk of magnesium deficiency and should have it checked regularly.

What Are the Side Effects of Too Much Magnesium?

Generally, magnesium from food isn't a problem, but too much from supplements can cause diarrhea, abdominal cramping, and nausea. In rare cases, very high doses can lead to serious complications like irregular heartbeat and cardiac arrest. Always follow dosage instructions and consult your doctor.

Who Should Avoid Magnesium?

Given that impaired kidney function can lead to magnesium buildup, those with significant kidney problems should consult their doctor. Similarly, if you're taking diuretics, heart medications, or antibiotics, checking for potential interactions with your physician is crucial. 

If you've had a severe allergic reaction to magnesium in the past, it's best to steer clear of magnesium supplements. Have a discussion with your healthcare provider to ensure magnesium supplementation is safe and appropriate for your health.

Types of Magnesium in Popular Supplements

We'll examine the common magnesium forms offered by popular brands, discussing their benefits and downsides.

Magnesium Glycinate

Magnesium glycinate (also known as magnesium bisglycinate) is a magnesium salt of glycine. It is a chelated form of magnesium that binds magnesium to two glycine molecules, aiming to improve the body's ability to absorb it. It is mainly known for being gentle on the digestive system. Here are its benefits and drawbacks:

• Benefits: One of the most significant advantages of magnesium glycinate is its high absorption rate. Magnesium glycinate has also been shown to have calming effects, which may suit you if you suffer from anxiety, stress, sleep issues, or struggle with muscle cramps. This makes it a key ingredient in the best magnesium supplement for leg cramps, sleep, and anxiety.
  

• Downsides: Magnesium glycinate tends to be more expensive than other forms of magnesium. While it is praised for being gentle on the stomach, it is not the best option for people with diarrhea.

Magnesium L-Threonate

Magnesium L-threonate is a relatively new form of magnesium derived from the metabolite of vitamin C. It got attention for its ability to penetrate the blood-brain barrier, with many benefits for cognitive health reported. Here are its benefits and drawbacks:

• Benefits: Magnesium L-threonate’s primary selling point is its potential to improve memory and cognitive function. It may enhance synaptic plasticity, which is crucial for learning and memory processes.
  

• Downsides: Magnesium L-threonate supplements can be pricey; many consider this its main downside. Some users also experience mild side effects, including headaches or digestive discomfort.

Magnesium Citrate

Magnesium citrate is a combination of magnesium and citric acid. It is one of the most commonly used forms of magnesium in supplements, mainly because of its bioavailability and palatability. Here are its benefits and drawbacks:

• Benefits: This form of magnesium is often praised for its laxative properties,​ and we think it’s the best magnesium supplement for constipation on our list. It draws water into the intestines and promotes bowel movement, besides improving overall magnesium levels​.
  

• Downsides: While this magnesium form is very effective, one should note that even the best magnesium citrate supplement can still cause gastrointestinal upset in some people, leading to diarrhea or abdominal cramps on occasion. It is not recommended for those with kidney problems; others should focus on hydrating properly when taking it​.

Magnesium Malate

Magnesium malate combines magnesium with malic acid, which is found in many fruits and is involved in energy production, so it is often recommended when addressing fatigue​. Here are its benefits and drawbacks:

• Benefits: Combining magnesium and malic acid can enhance energy levels and reduce muscle pain. It is a popular choice among athletes and people with fibromyalgia, but malate is also known to support mitochondrial function​.
  

• Downsides: Some people experience digestive discomfort or diarrhea when taking magnesium malate, particularly in higher doses. Therefore, it may be a good idea to consult a healthcare provider before using it.

Magnesium Oxide

Magnesium oxide is a relatively inexpensive form of magnesium. It consists of magnesium and oxygen. While it often contains a high percentage of elemental magnesium, its absorption rate is lower than many other types. Here are its benefits and drawbacks:

• Benefits: The best magnesium oxide supplement can relieve heartburn and indigestion due to its antacid properties. It also has laxative effects, making it suitable for occasional constipation relief.
  

• Downsides: Magnesium oxide's low bioavailability can make it less effective for raising general magnesium levels in the body. Those with kidney conditions should avoid magnesium oxide, as excessive intake can lead to toxicity buildup​.

Magnesium Taurate

Magnesium taurate is formed by combining magnesium with taurine, an amino acid. This combination isn't random; it's designed to deliver the benefits of both. Here are its benefits and drawbacks:

• Benefits: This form of magnesium stands out for its potential cardiovascular benefits. It's often highlighted as the best magnesium supplement for blood pressure and heart function. Beyond that, magnesium and taurine regulate blood sugar levels, and magnesium taurate may contribute to nerve function and muscle health.
  

• Downsides: While less likely to cause digestive issues than other magnesium forms, it can still lead to mild gastrointestinal discomfort in some individuals.

Choosing the Best Magnesium Supplement: Factors To Consider

Selecting the best magnesium supplement brand depends on individual needs, lifestyle, and specific goals. For example, those seeking general relaxation and improved sleep may be best off with magnesium glycinate, while magnesium L-threonate is best suited for cognitive benefits. 

On the other hand, if digestive health is your primary concern, magnesium citrate or oxide might be more suitable. It’s best to consult a healthcare provider to choose the best magnesium supplement for you and to ensure it aligns with your needs​.

Here’s what you should pay attention to when looking for the best magnesium supplement for men and women who value fitness:

Ingredients

When selecting a magnesium supplement, examine the ingredients and find a supplement that fits your needs. Also, check for additional ingredients and see their benefits, confirming they align with your goals​.

Pricing

Prices vary widely and are determined by branding, type, and specific dosage. If you plan to use the supplement in the long run, compare different products and seek solid bulk order deals.

Value for Money

Evaluate the magnesium supplement's cost-effectiveness. Consider the price per serving and the value you get for your money. High-quality formulations often mean a high absorption rate and a high price.

User Reviews

Read user reviews online and focus on a product’s effectiveness, potential side effects, and overall satisfaction. This feedback can help gauge whether the product meets the needs of others with similar goals.

FAQs on the Best Magnesium Supplements 

Below, we address some commonly asked questions about the best magnesium supplements and their uses.

What Is Magnesium?

Magnesium is a mineral that plays an essential role in over 300 biochemical reactions in the body, including muscle function, nerve transmission, and energy production. It is naturally found in green leafy vegetables, nuts, seeds, and whole grains. However, many people do not get enough magnesium through diet alone, which leads to a need for supplementation​.

What Is the Healthiest Type of Magnesium To Take?

The answer can differ depending on your needs and what you're trying to achieve. Magnesium glycinate is the best magnesium supplement for anxiety and sleep, while magnesium citrate is effective for constipation relief. Additionally, magnesium malate may be the best magnesium supplement for muscle recovery and dealing with muscle aches.

Is It Better To Take Magnesium Citrate or Magnesium Glycinate?

The two are both highly bioavailable forms of magnesium but may have different effects. Magnesium citrate is a laxative in high enough doses, especially if your diet already has plenty of fiber. You'd be better off with glycinate if you’re looking for high bioavailability with regular use—with benefits like bone health, improved sleep, and anxiety relief.

Which Vitamins/ Medications Should Not Be Taken With Magnesium?

The best magnesium complex supplement can interact with several medications. Key ones to watch out for include some antibiotics, diuretics, and bisphosphonates for osteoporosis. While vitamin and other mineral interactions are less about danger and more about timing, calcium and magnesium compete for absorption, so it's generally best to take them at different times.

What Is the Best Magnesium Supplement for Pregnancy?

While magnesium is crucial during pregnancy, there isn't one type that takes all the shine. Magnesium glycinate is often favored for its optimum absorption rate and how gentle it is on the stomach, but it's essential to consult your doctor for personalized recommendations on the dosage and type of magnesium supplement to use, as well as safety measures to take.

Best Magnesium Supplement: Final Thoughts

With so many choices online, it’s hard to make the right choice when looking for the best magnesium supplement for women and men with ambitious health and fitness goals. This guide’s aim was to provide an in-depth look at quality products like BIOptimizers Magnesium Breakthrough and key considerations when choosing a magnesium supplement for yourself.

We highlighted unique benefits and potential drawbacks, showing what these supplements are best for and what they lack in efficacy. However, always consult a doctor to ensure specific products align with your needs and watch out for potential side effects.

References 

1. Fiorentini D, Cappadone C, Farruggia G, Prata C. Magnesium: Biochemistry, Nutrition, Detection, and Social Impact of Diseases Linked to Its Deficiency. Nutrients. 2021 Mar 30;13(4):1136. doi: 10.3390/nu13041136. PMID: 33808247; PMCID: PMC8065437.

2. DiNicolantonio JJ, O'Keefe JH, Wilson W. Subclinical magnesium deficiency: a principal driver of cardiovascular disease and a public health crisis. Open Heart. 2018 Jan 13;5(1):e000668. doi: 10.1136/openhrt-2017-000668. Erratum in: Open Heart. 2018 Apr 5;5(1):e000668corr1. doi: 10.1136/openhrt-2017-000668corr1. PMID: 29387426; PMCID: PMC5786912.

3. “Check out This Amazon Review of BiOptimizers Magnesium Breakthrough Supplement 4.0 - Has 7 Forms of Magnesium: Glycinate, Malate, Citrate, and More - Natural Sleep and Brain Supplement - 60 Capsules.” Amazon.Com, https://www.amazon.com/gp/aw/review/B08WPLW4VN/RABTXO7NDB1K6?ref=pf_vv_at_pdctrvw_srp. 

4. “Check out This Amazon Review of Magnesium Breakthrough Supplement 4.0 - Has 7 Forms of Magnesium: Glycinate, Malate, Citrate, and More - Natural Sleep and Brain Supplement - 30 Capsules.” Amazon.Com, https://www.amazon.com/gp/aw/review/B08WPLW4VN/R3OXECLBALO66T?ie=UTF8&ASIN=B09R2DCRMY. 

5. “Check out This Amazon Review of Magnesium Breakthrough Supplement 4.0 - Has 7 Forms of Magnesium: Glycinate, Malate, Citrate, and More - Natural Sleep and Brain Supplement - 30 Capsules.” Amazon.Com, https://www.amazon.com/gp/aw/review/B09R2DCRMY/RU1SU4HRNXEV9?ie=UTF8&ASIN=B09R2DCRMY.

6. “Magnesium Glycinate - 120 Tablets.” Akasha Naturals, https://akashanaturals.com/products/magnesium-glycinate-120-tabs-akn. Accessed 4 Apr. 2025.

7. rachs. “Any Experiences with MagTech?” Reddit.Com, https://www.reddit.com/r/Supplements/comments/ya3dts/comment/iul0zdg/. Accessed 4 Apr. 2025.

8. “Steffen Gave Natural Stacks 1 Star. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/628d20e14b16276ac98f524e. Accessed 4 Apr. 2025.

9. “Ancient Nutrients Magnesium.” Ancient Nutrition | Dr. Axe, https://ancientnutrition.com/products/ancient-nutrients-magnesium. Accessed 4 Apr. 2025.