The Most Effective Magnesium Supplements In 2025 – A Buyer’s Guide
How important is magnesium?
Magnesium is an essential mineral that contributes to many key functions in the body, including energy production, muscle function, and nervous system health. Despite its importance, many Australians don’t get enough from diet alone.
That’s why magnesium supplements have become so popular. They’re often chosen by people interested in supporting energy, muscle recovery, and overall wellbeing.1 But with so many options on the shelves, it can be hard to know which formula is right for you.
In this guide, we’ll break down the benefits of magnesium, what to look for in a supplement, what to avoid, and share our picks for the best magnesium supplements in Australia.
Did you know that only around one in three Australians are meeting their recommended daily magnesium intake?2
That means two out of three people may be falling short, even though magnesium supports essential functions like energy production, muscle function, and nervous system health.
Because of this widespread dietary gap, magnesium supplements are becoming a go-to for everyday wellness support—especially when diet alone may not be enough.
Fortunately, magnesium supplements can be a convenient way to support daily intake and help meet recommended nutritional needs.
What are the Benefits of Magnesium?
- Contributes to normal energy-yielding metabolism
- Helps reduce tiredness & fatigue
- Supports muscle function & relaxation
- Plays a role in bone and teeth structure
- Contributes to normal nervous system function
- Contributes to the process of cell division
- & More...
With its wide range of recognised functions, magnesium has become one of the most popular wellness supplements on the market. But with so many different options available, it can be difficult to tell which ones are truly high-quality and which may fall short.
Keep in mind, not all magnesium supplements are the same. Different brands use different forms of magnesium, and each form may offer slightly different benefits or levels of absorption. Choosing the right one depends on your individual needs and preferences.
At Theonia Reviews, we've analyzed some of the top-selling magnesium supplements on the market to help guide you in the right direction. We'll show you what to look for and what to avoid in a high-quality supplement, plus, we share our top 5 picks of the year.
What should I look for in my supplement?
High-potency
When choosing a magnesium supplement, it’s important to check not only the ingredient list but also the elemental magnesium content (the actual amount your body uses). Many products list big numbers, but these may reflect the compound weight rather than true magnesium levels. Look for a supplement that provides around 100 mg of elemental magnesium per capsule, clearly labelled.
Well-Absorbed Forms of Magnesium
Different forms of magnesium vary in how well they’re absorbed by the body. Look for magnesium supplements that contains the following well-studied forms of Magnesium:
- Magnesium Citrate
- Magnesium Glycinate
- Magnesium Phosphate Pentahydrate
Research has focused on several forms of magnesium — including glycinate, citrate, and phosphate — which are often chosen for their role in supporting absorption and tolerance. Some supplements include just one type, while others combine multiple forms to provide a broader spectrum of support. Checking the label can help you understand which forms are included in your supplement.
Added Zinc
Zinc is another important mineral often included in magnesium supplements. It contributes to normal immune function, supports cellular health, and plays a role in normal skin and tissue repair. Including both magnesium and zinc in the same formula can provide complementary mineral support.
Money-back guarantee
It’s also worth considering brands that offer a clear money-back guarantee. This can give you extra peace of mind when trying a new supplement and shows that the company stands behind the quality of its products.
What should I avoid?
Beware of online reviews (especially on Amazon).
Before purchasing any product, one of the first things we do when researching it is check its online reviews. Unfortunately, these are not always a trustworthy way to measure the quality and effectiveness of a product. Companies often pay for reviews on popular online retailers, like Amazon, to try and trick their way to a five star rating. While you should definitely consult these reviews before purchasing, do your own research as well.
Supplements with calcium
Calcium is an essential mineral in its own right, but when taken in high amounts at the same time as magnesium, it may compete for absorption. For this reason, some people prefer taking these minerals separately.
Supplements containing ONLY Magnesium Citrate
Magnesium citrate is a well-absorbed form of magnesium, but when taken in high doses it may have a laxative effect. That’s why many high-quality formulas include a blend of different magnesium forms rather than relying on citrate alone, like our #1 choice!
Poor quality ingredients and low potency.
It’s best to avoid supplements that contain unnecessary fillers, additives, or that don’t clearly state their elemental magnesium content. Checking the label is the easiest way to ensure you’re choosing a product that provides meaningful support.
How we evaluated the top 5
For years, research has highlighted the important roles of magnesium in supporting everyday health. This has made magnesium supplements some of the most popular wellness products on the market. But with so many options available, it can be difficult to know which ones are truly worth considering.
That’s why we reviewed some of the top-rated magnesium products available online, evaluating them on product quality, customer service, and pricing.
Here are our top 5 magnesium supplement picks for 2025.
1. Magnesium Complex
Total Ranking
963 votes
9.7/10
A+
Overall GradePROS
- Provides 205mg of elemental magnesium per daily serve (2 capsules)
- Triple-magnesium blend: citrate, glycinate, and phosphate forms
- Includes zinc (as citrate and gluconate) and vitamin D3 for added support
- Vegan-friendly, non-GMO, gluten-free, and free from artificial additives
- Third-party tested and transparently labelled
- Made in Australia to high-quality and purity standards
CONS
- Only Available Online
The Bottom Line
Theonia’s Magnesium Complex sets a strong benchmark for daily magnesium support. It delivers 205mg of elemental magnesium per serve from three well-absorbed forms—magnesium citrate, glycinate, and phosphate—to promote muscle function, energy, and overall wellness.
It’s further enhanced with zinc and vitamin D3, creating a more comprehensive formula for nervous system support and bone health. With clean, vegan-friendly capsules made in Australia and backed by third-party testing, this supplement offers both efficacy and trust for daily use.
*Results are based on the TheoniaLiving Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn About Our Top Pick2. Mega Magnesium
Total Ranking
412 votes
8.6/10
B
Overall GradePROS
- High-strength formula with 200mg elemental magnesium per tablet
- Uses Meta Mag® magnesium diglycinate for superior absorption
- Includes supportive nutrients like Zinc, B6, Selenium, and Chromium
- Designed for muscle support, energy production, and PMT relief
- Free from gluten, wheat, dairy, soy, nuts, and artificial additives
- Made in Australia and practitioner-formulated
CONS
- Larger tablet size may be harder for some to swallow
- Lacks Vitamin D for added musculoskeletal and immune support
The Bottom Line
Ethical Nutrients’ Mega Magnesium is a practitioner-grade blend designed for active Australians managing muscle function, energy, and mild cramps. Its combination of magnesium amino acid chelate and Meta Mag® diglycinate ensures good absorption, while additional nutrients like Zinc and B6 round out its everyday benefits.
It’s a strong, well-balanced option—especially for those needing more than just magnesium alone. However, it skips Vitamin D, which may be a drawback for users seeking more comprehensive support for bone and immune health in a single formula.
*Results are based on the TheoniaLiving Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn More3. Magnesium Forte
Total Ranking
269 votes
8.5/10
B
Overall GradePROS
- Provides 220mg of elemental magnesium from four organic forms
- Includes amino acid chelate, citrate, glycinate, and orotate forms
- Formulated without gluten, lactose, dairy, soy, or artificial additives
- 100% vegan and suitable for people with dietary restrictions
- Australian-made and practitioner-formulated
CONS
- Doesn’t include complementary nutrients like vitamin D or zinc
- Larger tablet size may not suit all users
The Bottom Line
Herbs of Gold Magnesium Forte is a strong, well-rounded choice for those wanting high elemental magnesium from organic, bioavailable sources. With four distinct forms—citrate, glycinate, orotate, and amino acid chelate—it supports everything from muscle function and nervous system health to energy and stress recovery.
The formula is vegan, allergy-friendly, and made in Australia with a clean label and no unnecessary additives. However, it skips supportive co-nutrients like vitamin D or zinc, and its tablets may be on the larger side for some users. Still, it’s an excellent pick for purists looking for a straightforward, high-strength magnesium complex.
*Results are based on the TheoniaLiving Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn More4. Magnesium Advanced
Total Ranking
301 votes
8.4/10
B-
Overall GradePROS
- Delivers 200mg total elemental magnesium from 4 well-absorbed forms
- Balanced formula targeting muscle function, energy, and stress relief
- Vegan-friendly and free from gluten, dairy, nuts, and animal products
- No artificial flavours, sweeteners, or preservatives
- Made in Australia by a trusted integrative health brand
CONS
- Doesn’t include additional co-nutrients like Vitamin D or Zinc
- Strict return policy due to regulations
The Bottom Line
Fusion Health Magnesium Advanced delivers 200mg of elemental magnesium from four gentle, highly absorbable forms—glycinate, citrate, amino acid chelate, and aspartate. This multi-action blend supports muscle recovery, steady energy, and relief from daily stress.
With a clean, vegan-friendly label and no artificial additives, it’s a solid pick for those prioritising magnesium absorption and ingredient transparency. However, Fusion’s strict return policy may be a downside for those seeking risk-free purchasing flexibility.
*Results are based on the TheoniaLiving Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn More5. Super Magnesium+
Total Ranking
207 votes
7.9/10
C
Overall GradePROS
- High-strength formula with 305mg of total elemental magnesium
- Includes Vitamin D3, Vitamin C, B6, manganese, and chromium
- Designed to support muscle recovery, energy levels, and stress
- Trusted Australian brand with wide national availability
- One-a-day capsule format for simplicity
CONS
- Contains magnesium oxide, which may cause digestive discomfort in some
- Includes soya bean products and sulfites (not ideal for sensitive users)
- Not confirmed vegetarian-friendly
The Bottom Line
Blackmores Super Magnesium+ is a strong all-rounder from one of Australia’s most trusted supplement brands. With 305mg of elemental magnesium from multiple sources—plus Vitamin D3, C, B6, manganese, and chromium—it’s formulated to support energy production, muscle recovery, and stress resilience in one convenient daily capsule.
While it doesn’t explicitly confirm vegetarian status and contains common allergens like soy and sulfites, it remains a popular and accessible option for those seeking a magnesium supplement with broad-spectrum support. For everyday muscle, bone, and metabolic health, it’s a solid pick—especially for those who prefer a one-a-day format from a pharmacy-grade name.
*Results are based on the TheoniaLiving Ranking System and do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn MoreFinal Thoughts
The Bottom Line
When it comes to choosing a magnesium supplement, it’s worth paying close attention to quality. Some products rely on forms of magnesium that are less well absorbed, or don’t clearly state their elemental magnesium content.
After reviewing a wide range of magnesium products and evaluating them on their ingredients, transparency, and customer service, we believe that Theonia’s Magnesium Complex stands out as a top choice.
Theonia also offers a 100% satisfaction guarantee, giving you added peace of mind.
Take advantage of this Offer while supplies last.
CITATIONS
- Fatima, G., Dzupina, A., B Alhmadi, H., Magomedova, A., Siddiqui, Z., Mehdi, A., & Hadi, N. (2024). Magnesium Matters: A Comprehensive Review of Its Vital Role in Health and Diseases. Cureus, 16(10), e71392. https://doi.org/10.7759/cureus.71392
- Australian Bureau of Statistics. (2011, December). Australian Health Survey: Usual Nutrient Intakes. ABS. https://www.abs.gov.au/statistics/health/food-and-nutrition/usual-nutrient-intakes/latest-release.
This is an advertisement and not an actual news article, blog, or consumer protection update.
* The information contained within this site is not intended as a substitute for professional medical advice. If you have, expect to have, or suspect you may have any medical condition, you are urged to consult with a health care provider. These statements have not been evaluated by the Food and Drug Administration or the European Food Safety Authority. These products are not intended to diagnose, treat, cure, or prevent any diseases or medical conditions. Results are based on the opinion of the author and their own rankings and do not necessarily reflect typical results from the use of these products. Trademarks used on our website belong to their respective owners and no implied or expressed endorsement of our website or services is intended. Rankings can be affected by the relationship or ownership interest we have in various products featured.
MARKETING DISCLOSURE: This website is a blog. As such you should know that the we have a monetary connection and the same ultimate beneficial owners (UBO) as some of the products we recommend on this site, including the #1 pick/partner on this blog post (Hey Nutrition). We may receive payments from direct sales of these products or commissions whenever a qualified sale occurs on any of featured sites, including sales from properties owned by the same UBO's, along with other partners through the Amazon Associates program.
ADVERTISING DISCLOSURE: This website and the products & services referred to on the site are advertising marketplaces. This blog post is an advertisement and not a news publication.
