🔥 Launch offer — save up to 57% on the Women's Magnesium Complex ends in 00:10:00
Syntro Women's Magnesium Complex
Syntro Women's Magnesium Complex
Syntro Women's Magnesium Complex
Syntro Women's Magnesium Complex
Syntro Women's Magnesium Complex
Syntro Women's Magnesium Complex
Syntro Women's Magnesium Complex
SAVE 57%
68,124+ women sleeping better

Syntro Women's Magnesium Complex

800 mg of magnesium in 10 forms, plus D3, K2 and methylated B vitamins, built to refill what stress drains — for calmer days, deeper sleep, fewer cramps and steady energy. Just two capsules a day.

  • Deeper sleep
  • Calmer days
  • Fewer cramps
  • Steady energy
  • Gentle on the stomach
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  • 90-Day Money Back Guarantee
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90-Day Money-Back Guarantee

Take it for three full months. If you don't sleep better and feel calmer, we'll refund your first order. No return required.

Who Is It Designed For?

If you're wired at night and tired by mid-afternoon, if your mind races the moment your head hits the pillow, if cramps wake you up or wipe out a day of your cycle, or if perimenopause has turned your sleep and mood upside down — this was made for you.

Stress burns through your magnesium. Every busy, demanding day uses up a mineral your nerves, muscles and sleep depend on. Most women don't get enough from food to begin with, and stress, caffeine, alcohol and intense exercise all draw it down further.

One cheap single-form tablet rarely covers it, and a cabinet of five separate bottles is a routine nobody keeps. This puts 800 mg of magnesium in 10 forms together with the cofactors it works with — D3, K2, methylated B vitamins, inositol and ashwagandha — in two capsules a day.

Made for women who want calmer days, deeper sleep and steady energy again — without juggling a shelf of supplements.

The 6 Things This Formula Was Built For

Twenty ingredients, six jobs. Each one maps to a real reason you feel drained, tense or wired.

1. Winding down at night. Magnesium contributes to the normal functioning of the nervous system. Most women tell us they fall asleep faster and wake less in the night within the first weeks.

2. A calmer, steadier mood. Magnesium and vitamin B6 contribute to normal psychological function, with a little ashwagandha root in the blend.

3. Muscles that let go. Magnesium contributes to normal muscle function — the reason so many women take it for night leg cramps and period cramps.

4. Steady energy, not a 3 p.m. crash. Magnesium, vitamin B6, B12 and folate contribute to the reduction of tiredness and fatigue.

5. Hormone and cycle support. Vitamin B6 contributes to the regulation of hormonal activity, and myo-inositol is included for cycle support.

6. Bones and everyday health. Magnesium, vitamin D3 and vitamin K2 contribute to the maintenance of normal bones, and vitamin D supports the normal function of the immune system.

How It Works

Magnesium is involved in over 300 processes in your body, from calming your nervous system to relaxing your muscles after they contract. When your stores run low, you feel it everywhere at once.

What's actually happening:
Stress uses up magnesium → your nervous system stays stuck "on" → your mind races and sleep gets lighter → muscles stay tense and cramp more easily → you wake up tired, lean on caffeine and crash by the afternoon.

Why what you've tried hasn't fixed it:
A single-form drugstore tablet gives you one form of magnesium and nothing it works with.
Sugary magnesium gummies need a handful a day and add sugar you don't want before bed.
Five separate bottles of magnesium, D3, K2 and B vitamins cost more and are a routine almost nobody keeps.

How Syntro Magnesium Complex works differently. It puts magnesium and its cofactors in one formula:

✓ 800 mg magnesium complex — 10 forms in one blend, not just one.
✓ Vitamin D3 & K2 — work alongside magnesium for normal bones.
✓ Methylated B vitamins — B6, B12 and folate in their active forms, for energy and the nervous system.
✓ Myo-inositol, ashwagandha, biotin & vitamin C — rounding out the 20-in-1 blend.

Two capsules a day. That's it.

What to Expect — Your First 90 Days

Here's what women typically report. Magnesium stores rebuild gradually, so give it one to two weeks of daily use for the first changes — some notice sooner.

Days 1–14 — the settling-in phase. Evenings start to feel calmer. Many women notice they fall asleep faster and rest more deeply by the end of week two.

Weeks 2–4 — the tension-release phase. Less tightness in the neck and shoulders, fewer night cramps, and afternoons that feel steadier.

Weeks 4–8 — the cycle and mood phase. The week before your period feels less of a rollercoaster, cramps are easier, and everyday stress lands more softly.

Days 60–90 — the new-normal phase. Rested mornings become your baseline. Calm stops being something you chase and becomes how you feel most days.

Stress, caffeine and busy weeks keep drawing on your magnesium. This tops it up every day you take it. That's why most women keep going past the first bottle.

How To Use

Take two capsules a day with food and a glass of water. Many women take them with dinner to help them wind down; any time of day works.

Each bottle holds 60 vegetarian capsules, a 30-day supply. Consistency is what makes the difference: many women notice calmer evenings within 1–2 weeks, with cramps, energy and mood building over 4–8 weeks. Store in a cool, dry place.

This is a food supplement, not a treatment for any condition. Do not exceed the recommended daily dose. If you are pregnant or breastfeeding, take medication (especially for your thyroid, blood pressure or blood thinners) or have a medical condition, talk to your doctor before use. Never stop or change prescribed medication without your doctor.

Shipping & Returns

Orders leave our warehouse within 1 business day and most arrive in 3 to 5 business days. You'll get a tracking number by email the moment it ships. Free shipping on every order — your price at checkout is the final price.

Covered by our 90-day money-back guarantee. No return required, no questions asked.

Customer reported

What women report after 4 weeks on the Magnesium Complex

91% fell asleep faster
88% felt calmer day to day
86% had fewer muscle cramps
84% said their energy felt steadier
Read more
Our return policy is simple — the restless nights will not returnOur return policy is simple — the restless nights will not returnOur return policy is simple — the restless nights will not returnOur return policy is simple — the restless nights will not return

What women are actually saying

★★★★★

“I'd lie awake until 1 a.m. Two weeks into these, I was drifting off before my show ended.”

Lauren P., 42 · Sleep
★★★★★

“Perimenopause wrecked my sleep and my mood. Four months in, I feel steady again.”

Michelle K., 47 · Perimenopause
★★★★★

“Leg cramps woke me two or three nights a week. By the end of the first month they'd mostly stopped.”

Stephanie W., 51 · Leg cramps

Stress Burns Your Magnesium. This Refills It.

The 3 p.m. Crash

Magnesium, B6, B12 and folate contribute to the reduction of tiredness and fatigue, so your energy stays more even through the afternoon instead of falling off a cliff.

Stress That Leaves You Wired but Tired

Every demanding day draws down your magnesium. Topping it up daily supports a calmer nervous system and normal psychological function, so stress lands more softly.

Night Leg Cramps & Period Cramps

Magnesium contributes to normal muscle function. Women tell us the cramps that woke them at night, and the ones that came with their period, eased within weeks.

Racing Mind & 3 a.m. Wake-Ups

When your nervous system can finally switch off, falling asleep gets easier. Most women report deeper, less broken sleep within the first two weeks.

20 Ingredients. Two Capsules.

Magnesium Complex 800mg

Magnesium Complex 800mg

Ten forms of magnesium in one blend, not just one. Contributes to normal muscle function, a normal nervous system and the reduction of tiredness and fatigue.

Vitamin D3 & K2

Vitamin D3 & K2

5,000 IU of D3 with 100 mcg of K2 (MK-7). They work alongside magnesium for normal bones, and vitamin D supports normal immune function.

Methylated B-Complex

Methylated B-Complex

B6, B12 and folate in their active forms (P-5-P, methylcobalamin, L-5-MTHF). Support energy, the nervous system, and B6 helps regulate hormonal activity.

Ashwagandha Root

Ashwagandha Root

A traditional adaptogenic root, included in the blend to round out the formula's calming side.

Myo-Inositol

Myo-Inositol

A vitamin-like compound found in citrus and grains, included for cycle support.

Biotin & Vitamin C

Biotin & Vitamin C

Biotin contributes to the maintenance of normal hair and skin, and vitamin C to the protection of cells from oxidative stress.

Your First 90 Days on the Magnesium Complex

Lauren P. (42 years old)
Lauren P. (42 years old)

By the end of the second week I was drifting off before my show ended. I hadn't done that in years.

Days 1–14

The settling-in phase

Your magnesium stores start to refill every day. Most women notice calmer evenings and falling asleep faster by the end of the second week.

  • 🌙 Calmer evenings
  • 😴 Falling asleep faster
  • 🧘 Less on edge
Michelle K. (47 years old)
Michelle K. (47 years old)

Around week three I realised I hadn't been woken by a leg cramp in days, and I wasn't snapping at everyone by 4 p.m.

Michelle K. (47 years old)

Weeks 2–4

The tension-release phase

As your stores keep building, this is the window most women notice fewer night cramps and less tightness in the neck and shoulders, with steadier afternoons.

  • 💪 Fewer night cramps
  • 🌿 Less tension
  • ⚡ Steadier afternoons
Danielle R. (36 years old)
Danielle R. (36 years old)

Six weeks in, I still have stressful days. I just don't take them to bed with me anymore.

Weeks 4–8

The cycle & mood phase

With magnesium, B6 and inositol supporting you every day, the week before your period feels calmer, cramps are easier and everyday stress lands more softly.

  • 🌸 Easier periods
  • 😊 More even mood
  • 🛡️ Less on edge
Kristen M. (33 years old)
Kristen M. (33 years old)

Month three. My period used to wipe out a whole day. Now I barely notice it coming.

Days 60–90

The new-normal phase

Stress keeps drawing on your magnesium, and this tops it up every day. Kept up, rested mornings become your baseline and calm stops being something you chase. This is why most women keep going.

  • 📈 Calm that lasts
  • ☀️ Rested mornings
  • 🔁 A routine you'll keep
LAUNCH OFFER — SAVE 57%

Syntro Women's Magnesium Complex Launch Offer

LAUNCH OFFER — SAVE 57%
3rd-party tested
Soy & dairy free
Vegetarian capsules
Non GMO
Gluten free
Sugar free

Not Just Any Magnesium.

Syntro Magnesium Complex Syntro Magnesium Complex
Single-Form Magnesium & Gummies Single-Form Magnesium & Gummies
How it works Magnesium + the cofactors it needs One ingredient, one job
Magnesium forms 10 forms in one blend Usually just one
Cofactors D3, K2, B6, B12 & folate included Bought separately
Stomach comfort Gentle blend, taken with food Can upset sensitive stomachs
Sugar Zero Often added to gummies
Daily routine 2 capsules, done Several pills or a handful of gummies
Ingredients 20-in-1, every dose listed Often one form or vague blends
Guarantee 90 days, no return needed Varies

Syntro Women's Magnesium Complex Launch Offer

LAUNCH OFFER — SAVE 57%

DEAL ENDING IN: 00:10:00

Made For One Job: Helping You Unwind

Most women blame themselves: too much on their plate, not enough willpower, just getting older. Often it's simpler than that: stress has been burning through their magnesium for months. Syntro Magnesium Complex isn't a sleeping pill and it isn't a single-form tablet — it refills magnesium and the vitamins it works with, every day. Here's what women report after 4 weeks.

91%
fell asleep faster
88%
felt calmer day to day
86%
had fewer muscle cramps
84%
said their energy felt steadier

91% fell asleep faster — most notice calmer evenings within 1–2 weeks

Figures are customer-reported, drawn from post-purchase feedback and reviews — not a clinical trial. Individual results vary. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease and is not a substitute for treatment prescribed by your doctor. Talk to your doctor before use if you are pregnant or breastfeeding, take medication or have a medical condition.

Try It Risk-Free for 90 Days

Take it for three full months. If you don't sleep better and feel calmer, email us and we'll refund your first order. No return required. No questions asked.

Try It Risk-Free for 90 Days

Questions About the Magnesium Complex

Why do I need magnesium if I eat well?

A balanced diet helps, but many women still fall short. Magnesium-rich foods like leafy greens, nuts and seeds aren't on most plates every day, and stress, caffeine, alcohol and intense exercise all draw down what you do get.

That's why so many women feel the signs — light sleep, cramps, feeling wired and tired — even when they eat well. Two capsules a day give you 800 mg of magnesium complex plus the vitamins it works with, consistently.

I'm in perimenopause or menopause. Is this for me?

Yes — many of our customers are. As hormones shift, sleep, mood and muscle comfort often change too, and those are exactly the areas magnesium and vitamin B6 support. Vitamin D3 and K2 work alongside magnesium for normal bones, which matters more after menopause.

Give it 4–8 weeks of daily use. It isn't hormone therapy and doesn't replace anything your doctor prescribes — if symptoms are affecting your daily life, talk to your doctor about your options too.

Will it make me drowsy during the day?

No. It isn't a sleeping pill and it doesn't knock you out. Magnesium supports your nervous system so you can wind down more easily when it's time to sleep; during the day most women simply feel calmer and more even.

If you'd like, take your two capsules with dinner so they're part of your evening routine.

Can I take this with my medication or other supplements?

It can generally be taken alongside most vitamins and supplements — just check you're not doubling up on vitamin D or magnesium from another product. If you take prescription medication — especially thyroid medication, blood pressure medication, blood thinners (vitamin K2 is in the formula) or sedatives — or have a medical condition, talk to your doctor first. Never stop or change prescribed medication without your doctor.

Why a 20-in-1 complex instead of plain magnesium?

Because magnesium doesn't work alone. Your body uses it in over 300 processes, and it works alongside vitamin D3, K2 and the B vitamins. A single-form tablet gives you one form of magnesium and nothing else.

This blend gives you 10 forms of magnesium plus D3, K2, active B6, B12 and folate, inositol, ashwagandha, biotin and vitamin C — in two capsules instead of five bottles.

What's actually inside it?

Per serving of two capsules: magnesium complex 800 mg (10 forms, about 350 mg elemental magnesium), vitamin D3 125 mcg (5,000 IU), vitamin K2 as MK-7 100 mcg, vitamin C 40 mg, vitamin B6 as P-5-P 1.7 mg, folate as L-5-MTHF 680 mcg DFE, vitamin B12 as methylcobalamin 12 mcg, biotin 300 mcg, ashwagandha root extract 10 mg, myo-inositol 10 mg and raspberry ketones 5 mg. Capsule: vegetable cellulose. Free from wheat, gluten, soy, dairy and tree nuts.

Is it safe? Can I take it if I'm pregnant?

Every batch is third-party tested for purity and potency, and the capsules are vegetarian with no sugar, gluten, soy or dairy. Take it with food — that's the easiest way to keep magnesium gentle on your stomach.

If you're pregnant, trying to conceive or breastfeeding, please don't start it without your doctor's go-ahead: the formula contains ashwagandha and a high dose of vitamin D. The same goes if you have a medical condition or take medication.

Try it once for $39.99
Rated 4.8/5 based on +10,839 Total Ratings

Real reviews from 68,124+ women

Individual results vary. Reviews reflect individual experiences.