Skip to content
Collagen 4+ is here!! Shop the most advanced collagen formula on the market >>
Collagen 4+ is here!! Shop the most advanced collagen formula on the market >>

Mag-Key

530 reviews

120 capsules (30-day supply)

Original price $29.45 - Original price $29.45
Original price
$29.45
$29.45 - $29.45
Current price $29.45

Buy 3 or more to save 10%

Mix and match any three UNI KEY or Fat Flush brand products to save 10% instantly!

NOT VALID WITH COUPONS AND SUBSCRIBE & SAVE

  • Save 10% on all subscriptions
  • 90 Day Money Back Guarantee
  • Free Shipping on orders over $99

​Full Spectrum Magnesium Supplement

Mag-Key contains four highly absorbable forms of Magnesium + B-6 with targeted health benefits: 

  • Heart Health*
  • Stress relief*
  • Sound sleep*
  • Constipation relief*

This targeted delivery system focuses broadly on your body, and more specifically on your mind, and muscles—especially your heart.

Benefits

An essential mineral involved in over 350 of the body's critical functions, magnesium is probably the most important yet deficient mineral in the body these days.*

Magnesium provides vital support to help:

  • Aid in stress relief and energy production*
  • Alleviate constipation*
  • Assist with sound sleep*
  • Support healthy blood pressure*
  • Support strong bones*
  • Aid in a healthy insulin response*

Could you be low on magnesium? 

Some of the most common symptoms include:

  • Fatigue
  • Muscle cramps
  • Muscle twitches
  • Headaches
  • Stress
  • Anxiety
  • Constipation
  • Irregular heartbeat
  • Sleep problems

Thanks to a blend of four powerful forms of magnesium, Mag-Key is able to support a wide range of health benefits - all from a single easy-to-take supplement.

Key Ingredients

Magnesium Glycinate

for your mind

  • Soothes nervousness, irritability, trouble sleeping, and lack of concentration*
  • Minimizes laxative effects and is the least likely form to induce diarrhea*
  • Corrects long term deficiencies*
  • Reduces numbness and crying*
  • Increases mental calmness and relaxation*

Magnesium Malate

for your muscles

  • Supports comfortable joints and nerves*
  • Calms muscle fatigue and restlessness*
  • Supports digestion (so take with meals)*
  • Increases energy production*

Magnesium Taurinate

for your heart

  • Supports healthy heart function*
  • Relieves headaches*
  • Suppresses heart palpitations and arrythmias*

Magnesium Orotate

for your body

  • Enhances athletic performance*
  • Boosts DNA formation and heart repair and function*

Vitamin B6

Supplementing with B6 is important to optimize absorption and assimiliation of magnesium.

Full List of Ingredients

Other ingredients: Vegetarian Capsule (Hypromellose and water) and microcrystalline cellulose.

portrait of Ann Louise Gittleman

I’m a big believer that everyone should supplement with high-quality magnesium. And for good reason.

A recent study from the National Institutes of Health suggests nearly 8 in 10 Americans don’t get enough magnesium.

And because your body requires magnesium for over 300 processes -- everything from your heartbeat to your metabolism -- low magnesium can cause all sorts of problems. And that's where supplementation can make a big difference.

Of the many, many magnesium supplements on the market, Mag-Key gets my vote because it’s the only one I’ve seen that includes four UNIQUE forms of magnesium - malate, orotate, glycinate and taurinate!

Ann Louise Gittleman, PhD, CNS
UNI KEY Health Brand Ambassador

Our Customers Say It Best

Suggested Usage

Take two (2) capsules twice daily, or as directed by a health care professional. Store tightly closed in a cool, dry place.

Why Buy from UNI KEY Health?

Our Quality Promise

Mag-Key is manufactured in the USA at a Good Manufacturing Practices (GMP) and FDA registered facility. Each finished product undergoes stringent purity, potency and heavy metal testing.

Every batch of Mag-Key is then third-party tested to confirm it meets the highest standards for purity, and every third batch is third-party tested for heavy metals.

100% Satisfaction Guarantee

We believe you’ll love the many benefits of Mag-Key!

And you can try Mag-Key today with complete confidence thanks to our 100% Satisfaction 90-Day Money-Back Guarantee.

If you’re dissatisfied with Mag-Key for any reason (or none at all) please give us a call at 1-800-888-4353 or email info@unikeyhealth.com and we’ll make it right.

We invite you to try Mag-Key today RISK FREE!

Customer Reviews
4.8 Based on 535 Reviews
5 ★
89% 
478
4 ★
7% 
40
3 ★
2% 
9
2 ★
1% 
5
1 ★
1% 
3
Customer Photos
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
MT
02/23/2025
Majella T.
United States

KUDOS - MAG-KEY (Magnesium)

THIS HAS THE PERFECT COMBINATION THAT WAS DOCTOR RECOMMENDED. IT HAS DEFINITELY HELPED MY LEGS FEEL BETTER. IT HELPS ME SLEEP BETTER. THANK YOU.

02/26/2025

UNI KEY Health

Hi Majella, We are so happy to hear that Mag-Key has helped you! Thank you for your great review :) Yours in good health, UNI KEY Staff

SK
02/12/2025
Suzanne K.
United States

Mag-key

Mag-Key helps keep leg cramps at bay, better digestion, and restful sleep

BM
02/10/2025
Barbara M.
United States

A must for me!

I love that Mag-Key includes several formulations of magnesium. I ran out for a while and realized that my muscles were cramping more. Mag-Key is definitely part of my daily routine now!

DH
01/12/2025
Darci H.
United States

Essential for my perimenopause season

Mag-Key has really helped! Afternoon fatigue, mood swings, and restlessness at night was really draining me until I started adding some vital supplements to my daily regimen. I really believe the magnesium and vitamin D has been a game changer for me!

01/14/2025

UNI KEY Health

Thanks for your great review, Darci! We are so happy to hear Mag-Key has really helped you! Thanks again :) Yours in good health, UNI KEY Staff

DB
01/11/2025
Dawn B.
United States

Mag key

I purchased Mag-Key for my mother, my sister, hubby and myself to help with muscle relaxation and sleep. We all suffer from insomnia.I love all the different types of magnesium!

BP
01/04/2025
Bruce P.
United States

Mag Key Rocks

My cardiologist recommended that I increase my intake of magnesium to help me with my A-Fib. He specifically told me to order MagKey because it had the most effective formula of 4 different kinds of Magnesium. I started taking it 10 years ago and the number of A-Fib events has decreased each year until I now only have a few one day A-Fib events each year. Not to mention that I sleep better, and my gut health has also improved. I plan on using mag key for the rest of my life!