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Top 5 Magnesium Supplements for Women Over 40 (2024)

If you’ve been looking into supplements for better sleep, reduced anxiety, or overall health, you’ve probably come across magnesium.

This essential mineral plays a crucial role in over 300 biochemical reactions in your body, yet studies show that nearly half of Americans don’t get enough of it through their diet alone. But with so many options available, choosing the right magnesium supplement can feel overwhelming.

That’s why today in this comprehensive guide, we’ll be sharing with you the different types of magnesium supplements, what to look for when choosing one, and review the top 5 products available today.

The 3 Most Popular Magnesium Types Compared

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Source

Absorption Rate

Additional Minerals

No / Little Side Effects

Marine Magnesium *Winner*Seawater High (up to 65%)
Magnesium Glycinate Chemically Bonded Moderate (50%)
Calcium Citrate Chemically Bonded Good (45%)
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Marine Magnesium *Winner*

Marine magnesium is sourced directly from pristine seawater, offering a pure, non-dolomite (not from dolomite rocks) form of this essential mineral. Unlike traditional limestone-derived supplements, this seawater-sourced magnesium undergoes a careful extraction process that preserves its natural mineral matrix and bioavailability. The result is a form of magnesium that’s both pure and potent, free from the contamination concerns associated with mined sources.

Key Benefits:

  • Superior bioavailability compared to conventional forms
  • Natural matrix of essential trace minerals from seawater
  • Non-dolomite (no from a rock) source ensures better absorption
  • Gentle on the digestive system
  • Environmentally sustainable seawater sourcing
  • Pure form without limestone contamination
  • Contains naturally occurring minerals in balanced ratios

Created through a synthetic process that chemically bonds elemental magnesium to the amino acid glycine. The magnesium is typically derived from mineral sources, while glycine can be produced through fermentation or chemical synthesis.

Key Benefits:

  • High absorption rate (around 80%)
  • Very gentle on the digestive system
  • Additional calming effects from glycine
  • Excellent for sleep and anxiety support
  • Less likely to cause laxative effects
  • Good option for those with sensitive stomachs

Drawbacks:

  • Synthetic production process
  • More expensive than basic magnesium forms
  • Large tablets due to glycine molecule size
  • May cause drowsiness due to glycine content
  • Limited additional mineral benefits

Produced by combining magnesium with citric acid. The magnesium is typically sourced from limestone or other mineral deposits, while citric acid is usually produced through fermentation of glucose or extracted from citrus fruits.

Key Benefits:

  • Good absorption rate (around 75%)
  • Affordable and widely available
  • Helpful for occasional constipation
  • Smaller tablet size
  • Easily dissolved in water
  • Often used in powder form

Drawbacks:

  • Can cause digestive issues and diarrhea
  • May not be suitable for long-term use due to laxative effects
  • Limited additional nutritional benefits
  • Often contains artificial sweeteners in powder form
  • Not ideal for those with sensitive digestive systems
Vitamin B6 Content

Vitamin B6 plays a crucial role in magnesium absorption and utilization. When these nutrients work together, they create a synergistic effect that enhances overall benefits. Look for supplements that include this essential vitamin to maximize magnesium’s effectiveness.

Why it matters: Studies have shown that B6 can increase magnesium absorption by up to 20-25%, making your supplement more effective and potentially reducing the dose needed.

While magnesium is generally safe, some forms can cause issues with prolonged use. The key is choosing a form that your body can process efficiently without building up tolerance or causing side effects.

What to consider:

  • Look for forms with high bioavailability
  • Avoid supplements with artificial fillers or preservatives
  • Choose products that have been tested for heavy metals and contaminants

The source of magnesium significantly impacts its quality and effectiveness. Traditional supplements often use magnesium derived from limestone, which isn’t as bioavailable as natural sources.

Natural vs. Synthetic:

  • Natural sources (marine, plant-based): Better absorption, additional trace minerals
  • Synthetic sources (limestone): Lower cost but potentially less effective

Top 5 Magnesium Supplements For Women Over 40

Why We Like Marine Magnesium + B6

Marine Magnesium + B6 sets itself apart from the rest by offering a wholesome magnesium solution. It uses marine magnesium that’s naturally derived from pristine seawater without any chemical processes, and even comes enhanced with the optimal dosage of vitamin B6 for maximum absorption and utilization.

The reason why we love Marine Magnesium is that it comes naturally packed with essential trace minerals. Trace minerals play a crucial role in countless bodily functions – they’re like the spark plugs of your cellular engines. These minerals:

  • Act as cofactors for enzyme reactions that drive metabolism
  • Support immune system function
  • Help maintain proper hydration and electrolyte balance
  • Enhance nutrient absorption and utilization
  • Contribute to bone density and strength
  • Support hormone production and regulation

Now, unlike conventional magnesium supplements that often provide excessive doses that your body can’t fully utilize, Marine Magnesium + B6 delivers an optimal amount that ensures maximum bioavailability without overwhelming your system.

Research has consistently shown that when taken together, B6 and magnesium create a synergistic effect that amplifies their individual benefits. This combination is particularly beneficial for:

  • Stress reduction and mood regulation
  • Energy production and metabolism
  • Muscle recovery and relaxation
  • Sleep quality improvement
  • Nervous system support

Marine Magnesium + B6 takes mineral supplementation further with its unique extraction process, which preserves the natural mineral structure and ensures maximum purity. This careful processing method results in a form of magnesium that’s highly bioavailable and gentle on the digestive system.

The combination of pure, seawater-sourced magnesium and optimally dosed B6 makes this formula one of the most effective and well-tolerated magnesium supplements available.

Pros

Cons

For those seeking a complete mineral support system, the Bone & Stress Essentials Bundle provides an exceptional solution that combines two premium marine-sourced supplements.

What makes this bundle particularly valuable is that it harnesses the intricate relationship between calcium and magnesium. Studies have that calcium and magnesium share many of the same transport pathways in your body. When these minerals are out of balance, they can actually compete with each other for absorption.

This is why taking magnesium alone, while beneficial, may not provide optimal results if your calcium levels aren’t properly maintained. The Bone & Stress Essentials Bundle solves this common supplementation problem by providing both minerals in their ideal ratio.

The magic of this bundle lies in its precise 2:1 calcium-to-magnesium ratio, which mirrors your body’s natural mineral balance. This ratio isn’t just a number – it’s based on extensive research showing that:

  • It optimizes the absorption of both minerals
  • Prevents them from competing with each other
  • Supports proper muscle and nerve function
  • Maintains healthy bone density
  • Promotes cardiovascular health
  • Enhances sleep quality and stress management

Each serving is precisely measured to maximize absorption: 500mg of  sustainably harvested marine calcium and 250mg of pure seawater-sourced magnesium. This careful portioning ensures you get the most benefit from every dose while preventing the waste that can occur with excessive doses.

Along with the perfect balanced dose of magnesium and calcium, this marine-sourced mineral bundle also delivers multiple benefits like:

  • Optimizes absorption through natural cofactors and helper vitamins
  • Provides comprehensive bone support with ideal mineral ratios
  • Supports muscle function and reduces cramping risk
  • Promotes better sleep quality and stress reduction
  • Maintains cardiovascular health through proper mineral balance
  • Delivers a full spectrum of trace minerals from pristine marine sources

With this thoughtfully designed combination of essential minerals and their cofactors, the Bone & Stress Essentials Bundle represents the most complete and bioavailable mineral support system available today.

Pros

Cons

Natural Vitality Calm is a magnesium supplement, marketed as an anti-stress drink mix powder.

The type of magnesium used in Natural Vitality Calm is magnesium citrate, which is usually sourced from limestone or other mineral deposits.

Now, Natural Vitality Calm comes in an effervescent powder-form, which means you’ll have to have water to take this supplement. Now, it may taste better, but when you take it this way you can’t be absolutely sure how much magnesium you’re getting as each dose may differ.

Overall, a more appetizing way to be taking magnesium supplements, but we hope they can do something to lower the chance of varying doses.

Pros

Cons

SlowMag is a magnesium & calcium supplement, marketed to support muscle relaxation, occasional muscle cramping & heart health.

The type of magnesium used in SlowMag is magnesium chloride, usually extracted from brine or seawater. The formula seems to be quite clean, with calcium, magnesium and chloride. However, the calcium used in their formula is calcium carbonate, which could be made from limestone or obtained from crushed marble and chalk.

Now, SlowMag does contain quite a number of additives, like titanium dioxide, talc, sodium lauryl sulfate and more. We recommend choosing another supplement if a clean ingredient list is an important criteria to you.

Pros

Cons

MagOx is a magnesium mineral dietary supplement tablet, marketed to supplement magnesium intake for adults.

The type of magnesium used in MagOx is magnesium oxide, mostly derived from limestone. The formula is really clean, and it only contains one singular ingredient, elemental magnesium. We really like that.

However, we hoped that alongside its clean ingredient list, MagOx could have included a booster or two to further increase the absorbability of the magnesium. Overall, a pretty good pick.

Pros

Cons

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Nancy Grace
Researcher and Science Writer
Nancy specializes in science journalism and factual information in the fields of health, medicine, and nutrition. She spends hours each week pouring through 100s of medical journals and research studies to increase accessibility to the depths of information by the everyday person.

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