10 Best Forms Of Magnesium For Muscle Cramps in 2026

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The best form of magnesium for muscle cramps is magnesium glycinate. Pure Encapsulations Magnesium Glycinate Capsules earn our Best Overall nod for their clean, allergen-free formulation that supports muscle function without digestive upset. For those who want a certified-purity option for evening relaxation, THORNE Magnesium Glycinate Capsules is our Best For Muscle Relaxation pick. SaltWrap Mag R&R Nighttime Muscle Cramp Relief takes Best For Night Cramps with its sleep-friendly blend.

Muscle cramps during or after exercise often stem from low magnesium levels, but choosing the right form matters. Glycinate is gentle on the stomach and well-absorbed, while other forms like citrate or oxide can cause loose stools or offer lower bioavailability. The wrong supplement can leave you frustrated and still cramping.

We built this guide by analyzing manufacturer specifications, expert round-ups on absorption and bioavailability, and patterns in owner feedback across hundreds of reviews. Our goal is to help you match the right magnesium form to your specific cramp pattern, whether that means nighttime relief, high potency, or a budget-friendly staple.

Top 10 Forms Of Magnesium For Muscle Cramps in the Market

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The Best Forms Of Magnesium For Muscle Cramps, Reviewed

#1Best Overall

Pure Encapsulations Magnesium Glycinate Capsules

Pure Encapsulations Magnesium Glycinate Capsules
FormCapsule
Magnesium TypeGlycinate
Servings90 capsules
Key BenefitSupports muscle, heart, sleep, stress
Free FromCommon allergens, GMOs, artificial ingredients
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What We Like

  • Free from common allergens and GMOs
  • Supports sleep, stress, and muscle function
  • Trusted brand with clean formulation

Trade-offs

  • Only one magnesium form (glycinate only)
  • No added electrolytes or cramp-specific blend

This 90-capsule bottle of magnesium glycinate provides a form of magnesium that supports neuromuscular contractions, cardiac function, and the metabolism of carbohydrates and amino acids. That means it can help with energy production and the use of calcium, phosphorus, sodium, and potassium. It also supports the metabolism of vitamin B6, vitamin C, and vitamin E, and may help support the sleep cycle and a sense of relaxation by increasing total dietary magnesium intake.

If you want a single-form magnesium glycinate supplement that covers the basics without extra ingredients, this one delivers exactly what it promises. For a targeted nighttime leg cramp formula, something like SaltWrap Mag R&R is an alternative, but this capsule keeps things simple and fits easily into a daily routine.

Best for: Someone wanting a clean, gentle, daily magnesium glycinate for muscle cramps and overall recovery. Not ideal for those seeking a multi-form or electrolyte-enhanced cramp formula.

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#2Best For Muscle Relaxation

THORNE Magnesium Glycinate Capsules

THORNE Magnesium Glycinate Capsules
FormCapsules
Key IngredientMagnesium Glycinate
Servings90 Capsules
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What We Like

  • NSF Contents Certified for purity
  • Contains calming glycine for relaxation
  • Trusted by 100+ pro sports teams
  • Supports muscle relaxation and sleep

Trade-offs

  • Only one form of magnesium included
  • No powder option for those who dislike pills

Magnesium is involved in over 600 enzymatic reactions in the body, and this capsule form delivers it as magnesium glycinate, a chelated type that includes glycine, a calming neurotransmitter. That combination makes it especially useful for winding down after a workout or before bed, when muscle tension tends to flare up. The NSF Contents Certification adds a layer of trust: what’s on the label is what’s in the bottle, which matters when you’re relying on a supplement for recovery and relaxation. For anyone dealing with cramps that hit hardest at night, this is a straightforward, no-nonsense option that prioritizes purity and function over flashy extras.

The trade-off here is simplicity. Unlike blends that pack seven forms of magnesium into one pill (like BIOptimizers Magnesium Breakthrough), Thorne sticks with a single, well-researched form. That’s great if you know glycinate works for you, but less flexible if you want a broader spectrum. The capsule format also means you’re swallowing pills rather than mixing a powder, fine for most, but worth noting if you prefer a powder. Compared to the SaltWrap Mag R&R option, which targets nighttime cramps specifically, Thorne takes a more general approach to muscle relaxation, making it a reliable daily staple rather than a targeted rescue remedy.

Best for: Someone who wants a clean, third-party-certified magnesium glycinate supplement for evening muscle relaxation and sleep support. Not ideal for those seeking a multi-form magnesium blend or a powder format.

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#3Best High Absorption

Nature Made Magnesium Glycinate Capsules

Nature Made Magnesium Glycinate Capsules
Serving Size2 Capsules
Magnesium per Serving200 mg
FormMagnesium Glycinate (Bisglycinate)
Supply30 Days (60 Capsules)
Key FeatureChelated for absorption
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What We Like

  • Chelated magnesium glycinate for high absorption
  • Gentle on the stomach
  • Supports muscle relaxation and heart health
  • Gluten-free, no artificial flavors

Trade-offs

  • Requires 2 capsules daily for full serving
  • Not suitable for those wanting a one-capsule dose

Each serving of two capsules provides 200 mg of magnesium in the glycinate form, which the manufacturer describes as gentle on the stomach and highly bioavailable. That makes it a practical option if you want a form that’s less likely to cause digestive issues compared to some other magnesium types. The supplement is also listed as supporting muscle relaxation, heart health, bone health, and nerve health, so it covers several daily wellness needs in one routine.

The serving requires two capsules per day, which is straightforward enough for a daily habit. Some users might prefer a higher elemental magnesium dose per capsule, but the focus here is on a form that’s chelated for better absorption. For someone who wants a trusted brand with a stomach-friendly magnesium glycinate, this bottle offers a 30-day supply without added colors or artificial flavors.

Best for: Anyone looking for a high-absorption, gentle-on-the-stomach magnesium glycinate for daily muscle cramp prevention and relaxation. Not ideal for those wanting a very high elemental magnesium dose per capsule.
#4Best For Night Cramps

SaltWrap Mag R&R Nighttime Muscle Cramp Relief

SaltWrap Mag R&R Nighttime Muscle Cramp Relief
Form90 Capsules
Magnesium TypeMagnesium Glycinate (Bisglycinate)
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What We Like

  • 8 natural muscle-supporting ingredients
  • Includes 5-HTP and GABA for sleep

Trade-offs

  • Formula targets night cramps, not daytime use
  • Contains 5-HTP and GABA, which some avoid

The formula combines eight natural ingredients, including magnesium glycinate, 5-HTP, and GABA. It targets both muscle tension and sleep support, so if your cramps strike at night, this blend works to calm your nerves and legs before bed. It skips cheaper magnesium forms like oxide or chloride that can cause stomach distress, and the manufacturer offers a full refund if you don’t love it after one dose, no questions asked.

This is a night-specific tool, not an all-day muscle relaxant. If your cramps hit during workouts or mid-afternoon, the sleep-focused blend may not be ideal for daytime use. Compared to a straightforward magnesium glycinate supplement like Pure Encapsulations, this one adds extra ingredients that some people prefer to keep separate, especially 5-HTP and GABA, which aren’t for everyone. But for those whose main frustration is being woken by leg cramps, the targeted formula makes sense.

Best for: Anyone whose muscle cramps strike mostly at night and wants a sleep-friendly blend with extra calming ingredients. Not ideal for those who need daytime cramp relief or prefer a single-ingredient magnesium supplement.
#5Best Organic Magnesium

Cramp Defense Leg Cramps Pills

Cramp Defense Leg Cramps Pills
FormOrganic magnesium (Truemag)
Dosage1-2 capsules per day
Supply3-6 month supply
ProcessingTriple-milled, fully-reacted
Made InUSA
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What We Like

  • Organic magnesium for better absorption
  • Fully-reacted to reduce digestive upset
  • Triple-milled for faster absorption
  • Capsules, not tablets, for easier digestion

Trade-offs

  • Works for about 80% of people, not all
  • Not suitable for those with cramps from non-magnesium causes

The organic magnesium compound here, called Truemag, is fully-reacted and triple-milled, which means your body can absorb it faster and with less digestive fuss than many cheaper magnesium pills. That matters when you’re dealing with muscle cramps that keep you up at night or interrupt a workout. For someone who wants a gentle, effective supplement that mimics how magnesium naturally appears in food, this is a smart place to start.

Even a well-absorbed magnesium won’t fix every cramp. The brand’s own data shows it works for about 80% of people, meaning some cramps stem from other causes, so it’s not a guaranteed cure. Compared to a glycinate option like Pure Encapsulations Magnesium Glycinate, this one leans on its organic, fully-reacted design to minimize side effects, while the glycinate form is also gentle but uses a different binding molecule. If your stomach is sensitive to supplements, the processing here is a real plus.

Best for: Someone who wants an organic, stomach-friendly magnesium supplement for muscle cramps and is okay with a non-instant solution that builds up over time. Not ideal for those who need a quick fix or have cramps unrelated to magnesium levels.
#6Best Powdered Formula

THORNE Magnesium Bisglycinate Powder

THORNE Magnesium Bisglycinate Powder
FormPowder
Servings60
CertificationNSF Certified for Sport
SweetenerLightly sweetened
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What We Like

  • NSF Certified for Sport purity
  • Powder allows flexible dosing
  • Supports muscle relaxation and sleep

Trade-offs

  • Requires mixing before drinking
  • Not as portable as capsules

A 60-serving powder format means you can dial in exactly how much magnesium you want, which is handy when muscle cramps hit at different intensities or times of day. This makes it a strong fit for active folks who like to adjust their dose without swallowing multiple capsules, and the NSF Certified for Sport badge gives extra confidence for anyone serious about training clean. The formula is designed to support restful sleep and muscle relaxation, so it pulls double duty for recovery after a hard workout or a long day on your feet.

The powder form requires a glass and a stir, so it’s less grab-and-go than the THORNE Magnesium Glycinate Capsules from the same brand. If you’re someone who tosses a bottle in your gym bag and drinks on the move, the capsule version might suit you better. But if you’re at home or in the office and prefer customizing your serving size, this powder delivers a more flexible option without the extra binding agents that capsules often require.

Best for: Active individuals who want flexible dosing and a third-party-tested powder for muscle relaxation and sleep support. Not ideal for those who need a portable, no-prep supplement.

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#7Best Multi-Form Blend

BIOptimizers Magnesium Breakthrough Capsules

BIOptimizers Magnesium Breakthrough Capsules
Magnesium per serving500 mg
Forms of magnesium7 types
Forms includedGlycinate, malate, citrate
Capsule count30 capsules
Daily dose2 capsules
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What We Like

  • 7 forms for varied absorption pathways
  • Includes glycinate, malate, and citrate
  • Free from artificial ingredients and preservatives
  • Supports muscle recovery and sleep

Trade-offs

  • Not a single-form magnesium for targeted dosing
  • Contains no single-form option for those who prefer targeted magnesium dosing.

The 500 mg of magnesium in each serving comes from seven different forms, glycinate, malate, citrate, and four others, so your body gets multiple absorption routes instead of relying on just one. That variety matters for muscle cramps because different tissues use magnesium differently: glycinate tends to relax muscles, malate supports energy production in cells, and citrate is quickly absorbed. If you’ve tried single-form magnesium and still wake up with tight calves, this blend gives you a broader toolkit without needing to buy three separate bottles.

This is a premium approach, more forms, more flexibility, but less time between refills. For someone who wants to experiment with different magnesium types in one capsule and doesn’t mind ordering again soon, it’s a smart starting point.

Best for: Someone who wants a multi-form magnesium blend to address muscle cramps from different angles. Not ideal for those who prefer a single, straightforward supplement with a longer-lasting bottle.

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#8Best High Potency 400mg

Nobi Nutrition Magnesium Glycinate Capsules

Nobi Nutrition Magnesium Glycinate Capsules
FormMagnesium Glycinate
Dosage400mg per serving
Capsule SizeSmall, easy-to-swallow
Third-Party TestedYes
DietaryVegan, Gluten-Free
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What We Like

  • High absorption chelated magnesium glycinate
  • 400mg per serving for potent support
  • Third-party tested for quality assurance
  • Small capsules are gentle on stomach

Trade-offs

  • Only one form of magnesium, not a blend
  • Capsules only, no powder option for mixing

At 400mg per serving of chelated magnesium glycinate, this supplement delivers a high dose aimed at supporting muscle, bone, and heart health, as well as sleep and calm. The glycinate form is known for its bioavailability and gentle digestion, so you get the support you need without the stomach upset some other forms can cause. It also brings sleep and calm support into the mix, which fits well if you want nighttime relaxation or post-workout recovery. Third-party testing adds a layer of trust for a product you’re taking daily.

The trade-off here is that it sticks to a single form of magnesium, glycinate only, while some options like BIOptimizers Magnesium Breakthrough blend seven forms for broader coverage. If you prefer a straightforward, high-potency approach and don’t mind capsules, this is a clean choice. But if you want a variety of magnesium types or a powder format to mix into a drink, you might look toward THORNE Magnesium Bisglycinate Powder instead.

Best for: Anyone wanting a potent, easy-to-swallow magnesium glycinate capsule for muscle support and nighttime relaxation. Not ideal for those seeking a multi-form magnesium blend or a powder supplement.

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#9Best Budget Pick

Double Wood Magnesium Glycinate Capsules

Double Wood Magnesium Glycinate Capsules
Servings180 capsules
Elemental magnesium60 mg per capsule
FormMagnesium glycinate (bisglycinate)
CertificationNSF Contents Certified
Capsule count180
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What We Like

  • Six-month supply per bottle
  • NSF certified for purity and potency
  • Chelated glycinate for gentle absorption
  • Third-party tested for heavy metals

Trade-offs

  • Low elemental magnesium per capsule (60 mg)
  • Only one form of magnesium included

A single bottle delivers 180 servings, which means you can keep a consistent magnesium routine for six months without reordering. That kind of supply makes it easy to stay on track with muscle recovery and nighttime relaxation, especially if you are new to supplementing and want something simple. The chelated bisglycinate form is known for being gentle on the stomach, so you are less likely to deal with the digestive discomfort some other magnesium types cause. This is a straightforward, no-fuss option for anyone who values long-term value over fancy extras.

Each capsule provides 60 mg of elemental magnesium, which is on the lower end compared to some competitors. If you prefer a budget-friendly, well-tested glycinate option and do not mind adjusting your serving size, this one gets the job done.

Best for: Budget-conscious buyers who want a long-lasting, gentle magnesium glycinate supplement for muscle relaxation and sleep support.
#10Best Sourced From Dead Sea

Organics Ocean Magnesium Glycinate Supplement

Organics Ocean Magnesium Glycinate Supplement
Elemental magnesium275 mg
FormMagnesium glycinate + zinc
SourceDead Sea
AdditivesOne additive only
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What We Like

  • 275 mg elemental magnesium per serving
  • Sourced from mineral-rich Dead Sea
  • Only one additive for easier digestion

Trade-offs

  • Not suitable for those wanting a magnesium powder form

This supplement includes zinc, which is fine for many but not everyone wants an extra mineral in their cramp-relief stack. Compared to Pure Encapsulations Magnesium Glycinate, which is a straight magnesium glycinate product, Organics Ocean adds zinc and highlights its Dead Sea origin. If you are after a straightforward magnesium-only option, Pure Encapsulations might be cleaner, but if you like the idea of a combined mineral boost, this one stands out.

Best for: Someone who wants a high-dose magnesium glycinate from a Dead Sea source with a simple formula. Not ideal for those who prefer a magnesium-only supplement without added zinc.

How We Evaluated Forms Of Magnesium For Muscle Cramps

Our evaluation is research-based. We studied manufacturer documentation for each supplement’s magnesium form, elemental dose, and additional ingredients. We also reviewed expert commentary on absorption rates comparing magnesium glycinate to citrate, malate, oxide, and other forms, and we looked for consistent patterns in owner feedback around cramp relief, digestion, and sleep quality.

Three criteria mattered most. First, bioavailability and form, glycinate and bisglycinate are chelated for better absorption, while oxide is cheaper but less effective. Second, purity and third-party testing. NSF Certification or third-party lab reports reduce the risk of contaminants. Third, targeted use, a nighttime blend with 5-HTP works differently than a straight glycinate capsule for daytime prevention.

The honest limit of a research-led evaluation is that individual response to magnesium varies. What works for one person’s cramps may not work for another’s, especially if the cause is dehydration, electrolyte imbalance, or an underlying condition. We recommend using this guide as a starting point, then paying attention to how your body responds.

What To Look For In Forms Of Magnesium For Muscle Cramps

Choosing the right magnesium starts with understanding the form and dose that fits your lifestyle and cramp pattern.

Look for chelated forms like magnesium glycinate or bisglycinate for best absorption with least digestive upset. Check the elemental magnesium per serving (200-400 mg is typical for cramps). Consider third-party certification for purity. Match the formula to your cramp timing, daytime prevention versus nighttime relief.

Magnesium Form And Bioavailability

Magnesium glycinate is the most researched form for muscle cramps because the glycine molecule helps the magnesium cross the intestinal wall efficiently. This “chelated” form binds magnesium to an amino acid, which also makes it gentle on the stomach. Magnesium oxide, by contrast, is poorly absorbed and often causes loose stools. Magnesium malate is another option for daytime energy support, while magnesium citrate can work but may trigger a laxative effect in sensitive individuals. Our guide to different magnesium forms breaks down each type’s absorption rate and best use case.

Elemental Dose Per Serving

The amount of elemental magnesium per capsule or scoop matters more than the total weight of the compound. A 400 mg magnesium glycinate capsule might contain only 60-100 mg of elemental magnesium, depending on the manufacturer. For muscle cramp prevention, most adults need 200-400 mg of elemental magnesium daily from supplements, though individual needs vary. Check the Supplement Facts panel, not the front label. For a deeper look at dosing, our resource on magnesium dosage for cramping covers the range that studies commonly use.

Third-Party Testing And Purity

Magnesium supplements are not FDA-approved before sale, so third-party certification is your best guarantee of purity and potency. NSF Certified for Sport, USP Verified, or independent lab reports (like those from ConsumerLab) confirm the product contains what the label says and is free from heavy metals and contaminants. THORNE and Double Wood both carry NSF certification, while Pure Encapsulations is a trusted brand that tests every batch. Our article on best magnesium supplements lists which brands meet these standards.

Additional Ingredients For Cramp Relief

Some supplements add complementary nutrients like zinc, 5-HTP, GABA, or electrolytes to target cramps from multiple angles. SaltWrap Mag R&R uses 5-HTP and GABA to support sleep while relaxing muscles, while BIOptimizers Magnesium Breakthrough combines seven magnesium forms for varied absorption pathways. If your cramps are linked to dehydration, electrolytes for cramps may be worth exploring alongside magnesium.

  • Compare the elemental magnesium dose, not the serving size.
  • Check if the form is chelated (glycinate, bisglycinate) for better absorption.
  • Look for third-party certification on the label or website.
  • Match the formula to your cramp timing, daytime or nighttime.
  • Consider whether you want a single form or a multi-form blend.

A good rule of thumb: start with magnesium glycinate at 200 mg elemental per day and adjust based on how your body responds.

Forms Of Magnesium For Muscle Cramps Compared

The table below compares all ten picks across form, elemental dose, and key features so you can quickly see which supplement fits your needs.

ProductFormMagnesium TypeServingsKey Benefit
Pure Encapsulations Magnesium Glycinate CapsulesCapsuleGlycinate90 capsulesSupports muscle, heart, sleep, stress
THORNE Magnesium Glycinate CapsulesCapsulesMagnesium Glycinate90 CapsulesSupports Restful Sleep, Muscle Relaxation, Stress Management, Heart Health & Metabolism
Nature Made Magnesium Glycinate CapsulesMagnesium Glycinate (Bisglycinate)Magnesium Glycinate (Bisglycinate)60 CapsulesHigh Absorption Magnesium Supplement for Muscle, Heart and Bone Support
SaltWrap Mag R&R Nighttime Muscle Cramp Relief90 CapsulesMagnesium Glycinate (Bisglycinate)90 CapsulesNight Leg Cramps Defense with Magnesium Glycinate, Ease Spasms and Tension
Cramp Defense Leg Cramps PillsOrganic magnesium (Truemag)Organic magnesium (Truemag)3-6 month supplyRelief for All Muscle Cramps, Day and Night
THORNE Magnesium Bisglycinate PowderPowderMagnesium Bisglycinate60 ServingsSupports Restful Sleep, Muscle Relaxation, Heart Health & Metabolism
BIOptimizers Magnesium Breakthrough CapsulesCapsules7 Forms of Magnesium30 capsulesRestful Sleep, Stress Resilience & Muscle Recovery
Nobi Nutrition Magnesium Glycinate CapsulesMagnesium GlycinateMagnesium Glycinate120 CapsulesSleep, Calm & Muscle Support
Double Wood Magnesium Glycinate CapsulesMagnesium glycinate (bisglycinate)Magnesium glycinate (bisglycinate)180 capsulesHighly Bioavailable Bisglycinate, Magnesium Supplement with 60mg Elemental Magnesium
Organics Ocean Magnesium Glycinate SupplementMagnesium glycinate + zincMagnesium glycinate + zinc90 Capsulessleep & muscle support, high absorption

Frequently Asked Questions

What form of magnesium is best for muscle cramps?

Magnesium glycinate is widely considered the best form for muscle cramps because it is chelated for high absorption and gentle on the digestive system. The glycine molecule also supports relaxation, which can help prevent nighttime cramping. Other forms like citrate may work but often cause loose stools at higher doses.

How much magnesium should I take for muscle cramps?

Most adults find benefit from 200-400 mg of elemental magnesium per day, taken in divided doses. Start at the lower end and increase gradually. The exact dose depends on your diet, activity level, and individual absorption, so it is best to follow the label directions and consult a healthcare provider.

Can magnesium help with nighttime leg cramps?

Yes, magnesium supplements are a common recommendation for nighttime leg cramps, especially when the cramps are linked to low magnesium levels. Forms like magnesium glycinate and bisglycinate are particularly helpful because they support both muscle relaxation and sleep quality. The best options for sleep and cramps combine these benefits.

What is the difference between magnesium glycinate and magnesium citrate?

Magnesium glycinate is chelated to the amino acid glycine, making it highly absorbable and gentle on the stomach. Magnesium citrate is bound to citric acid and is also well-absorbed, but it has a mild laxative effect that can be uncomfortable for some people. For muscle cramps, glycinate is usually the preferred choice.

Should I take magnesium with other supplements for cramps?

Yes, combining magnesium with other supplements for cramps like potassium, calcium, and electrolytes can address multiple causes of muscle cramping. Dehydration and electrolyte imbalance are common triggers, so key electrolytes like sodium and potassium play a supporting role alongside magnesium.

The Bottom Line

For most people dealing with muscle cramps, Pure Encapsulations Magnesium Glycinate Capsules is the best overall choice. Its clean, allergen-free formulation provides gentle, well-absorbed magnesium glycinate without unnecessary additives, making it a reliable daily supplement for cramp prevention and recovery.

If your cramps strike mostly at night, SaltWrap Mag R&R Nighttime Muscle Cramp Relief adds 5-HTP and GABA for sleep support. For budget-conscious buyers, Double Wood Magnesium Glycinate Capsules offers a six-month supply with NSF certification at a low cost per serving. Those who want a multi-form approach should consider BIOptimizers Magnesium Breakthrough.

The single most important factor is choosing a chelated form like glycinate or bisglycinate. Everything else, dose, timing, additional ingredients, comes second to absorption and stomach comfort. Start there, and your cramps will thank you.