"I have used this magnesium off and on for about 25 years. I have tried at least a dozen other brands through the years. None of the others come close to what Mag-Key does. It helps me sleep well, helps keep my bowels regular, and keeps nighttime leg cramps at bay. And I feel assured that it is helping our hearts too!"
– Bonny M.

Verified buyer

Mag-Key

Name: Mag-Key
Brand: Uni Key Health Systems, Inc
SKU: 2130
Price: 32.25 USD
Availability: InStock

full-spectrum magnesium supplement

Most magnesium supplements fall short—but Mag-Key delivers four elite forms plus vitamin B6 for optimal absorption and total-body benefits you can actually feel!

• CALM, SLEEP & FOCUS – Magnesium Glycinate relaxes your nervous system to ease stress, reduce irritability, and support deep, restorative sleep.

• MUSCLE REPAIR & ENERGY – Magnesium Malate helps fuel ATP energy production and relieves muscle cramps, nerve tension, and post-exercise soreness.

• HEART HEALTH & LONGEVITY – Magnesium Taurinate and Orotate support a steady heartbeat, healthy blood pressure, improved circulation, and long-term vitality.

Quantity

Highlights

Magnesium is involved in over 300 essential processes in your body, but most people don’t get enough of it. Mag-Key is designed to fix that. This unique blend includes four easy-to-absorb forms of magnesium, paired with vitamin B6 to help your body use it more effectively.

Unlike other magnesium supplements that can cause digestive discomfort or don’t work well, Mag-Key is gentle, powerful, and truly bioavailable. If you're dealing with stress, poor sleep, low energy, or muscle cramps, this is the magnesium your body has been asking for!

How to Use

Take two (2) capsules twice daily, or as directed by a health care professional.

Product Facts

Form: Capsule

Serving Size: 2 capsules

Number of Servings: 60

Contains No: starch, dairy, gluten, artificial colors or flavors, preservatives, soy, or synthetic fillers.

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Magnesium That Works—Exactly Where You Need It

Heart Health & Circulation
Supports a healthy heart by promoting optimal cardiovascular function and maintaining normal blood pressure levels, so you can keep your heart in top condition.

Muscle Recovery & Nerve Relief
Helps reduce muscle tension and stop cramps, easing discomfort and supporting optimal nerve function for improved physical comfort and performance.

Improve Sleep & Reduce Stress
Relaxes the nervous system to ease anxiety, sharpen mental clarity, and promote deep, restorative sleep—so you feel calm, focused, and centered all day long.

Digestive Health & Regularity
Promotes regular digestion and alleviates constipation, helping to maintain a healthy digestive system and supporting overall gut health.

The Magnesium Your Body’s Been Missing

If you've ever taken magnesium and felt nothing—or ended up with an upset stomach—you're not alone. Most formulas use poorly absorbed forms that don't deliver results. Mag-Key was designed to change that, offering a gentle, effective formulation to keep you calm, rested, and rebalanced without the side effects.

Modern life depletes magnesium fast—thanks to stress, sugar, caffeine, processed foods, and certain medications. Mag-Key helps restore what your body's missing with four bioavailable forms and activated B6 for optimal absorption. It's a simple daily habit that supports energy, mood, sleep, and muscle function—so you can feel your best all day long.

Key Ingredients
Full List of Ingredients
Supplement Facts

Magnesium Glycinate

Supports mental well-being by soothing nervousness, irritability, and sleep issues, while improving concentration. It’s gentle on the digestive system, minimizes laxative effects, and helps correct long-term deficiencies. This form of magnesium promotes relaxation, calmness, and overall mental balance.

Magnesium Malate

Ideal for supporting muscle and joint comfort, reducing muscle fatigue and restlessness. It also aids in digestion when taken with meals and boosts energy production, helping you stay active and energized throughout the day.

Magnesium Taurinate

Supports healthy heart function by relieving headaches and helping to suppress heart palpitations and arrhythmias, promoting overall cardiovascular health.

Magnesium Orotate

Enhances athletic performance while supporting DNA formation and aiding in heart repair and function, helping your body perform at its best.

Activated Vitamin B6

Essential for optimizing the absorption and assimilation of magnesium, ensuring you get the full benefits!

Magnesium Glycinate, Magnesium Malate, Magnesium Taurinate, Magnesium Orotate, Vitamin B6 (pyridoxal-5-phosphate). Other Ingredients: Microcrystalline Cellulose, Hypromellose, Magnesium Stearate.

Questions? We've Got Answers!

How do I know if I'm deficient in magnesium?

Common signs of magnesium deficiency include fatigue, muscle cramps, headaches, anxiety, constipation, irregular heartbeat, and sleep problems. Unfortunately, most people today are low in magnesium due to modern farming practices that deplete the soil, along with diets high in processed foods and low in mineral-rich vegetables. Even mild deficiencies can affect energy, mood, and overall health, making magnesium replenishment essential.

Who can benefit from taking Mag-Key?

Mag-Key is perfect for anyone looking to improve their energy, reduce stress, support heart health, or ease muscle discomfort. It’s ideal for those with a busy lifestyle, athletes, or anyone experiencing sleep issues.

How soon will I start feeling the effects of Mag-Key?

Many people begin to feel the calming effects of Mag-Key within a few days, with full benefits like improved sleep and muscle comfort typically noticeable after a week or two of consistent use.

Can Mag-Key help with constipation?

Yes, Mag-Key is formulated to aid digestion and support healthy bowel movements, making it a great choice for those struggling with occasional constipation. It does not have laxative effects like other supplements that contain magnesium citrate.

Is Mag-Key safe to take every day?

Yes, Mag-Key is designed for daily use and provides a natural, safe way to support your overall wellness, from heart health to muscle relaxation. As always, if you have specific health concerns, it's best to consult with a healthcare professional.

Our Customers Say It Best

"I love the Mag-Key supplement as a part of my daily health plan. It helps me to sleep well at night, without waking up. In the mornings I feel well rested and usually wake up without my alarm. It also helps with digestion and anxiety. I definitely notice a difference when I don't take it. I recommend this product to all of my friends and family!"
– Andrea R.

"Mag-Key has really helped! Afternoon fatigue, mood swings, and restlessness at night was really draining me until I started adding this vital supplement to my daily regimen. I really believe this magnesium has been a game changer for me!"
– Darci H.

"Leg cramps, specifically my calf muscles, have been an issue for me for several years. The cramping usually happens when I'm in bed for the night. I take 2 capsules during the day and 1 or 2 capsules before going to bed. I'm able to sleep through the night and wake up feeling rested. I was taking magnesium glycinate before using the Uni Key Health brand but I think the 4 different forms in Mag-Key work best for my body. This is a product I can't live without!"
– Karla A.

Recommended by Ann Louise Gittleman, PhD, CNS

Top Nutritionist & New York Times Bestselling Author

"I'm a big believer that everyone should supplement with high-quality magnesium—and for good reason. Magnesium is what I call the miracle mineral because it's involved in over 300 processes in the body, from your heartbeat to your metabolism. And yet, nearly 8 in 10 Americans aren't getting enough! That kind of deficiency can show up as fatigue, brain fog, cramps, sleep issues, or simply feeling 'off'—and most people have no idea magnesium is the missing link.

That's why I formulated Mag-Key—to be the one magnesium supplement that truly works. Most products use a single, cheap form that barely absorbs. But Mag-Key is different. It contains four unique, highly bioavailable forms—malate, orotate, glycinate, and taurinate—plus activated B6 for deeper absorption and faster results.

Whether you're an athlete, a busy parent, or someone dealing with tension, sleep struggles, or stress, Mag-Key delivers full-body support that helps you stay sharp, steady, and strong. It's the clean, effective formula I use myself, and recommend to everyone starting on their health journey."

Why Buy from UNI KEY?

Our Quality Promise

At UNI KEY Health, we are committed to providing the highest quality supplements. Our products are manufactured in the USA at a Good Manufacturing Practices (GMP) and FDA-registered facility. Each batch undergoes rigorous testing for purity, potency, and heavy metals to ensure you receive only the best.

100% Satisfaction Guarantee

We stand behind every product we offer with our 90-Day Money-Back Guarantee. If you're not completely satisfied for any reason, simply call us at 1-800-888-4353 or email info@unikeyhealth.com, and we’ll make it right.

We invite you to try UNI KEY Health products today—RISK FREE!

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trusted since 1992

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Verified Customer Reviews

It’s a great product. It’s great that it has different types in one pill!

It’s pretty incredible how beyond powerful these Uni-Key supplements are. I’m about 2/3 through my first bottles of Osteo-Key & Mag-Key..not even done with the bottles yet and something amazing is happening! For the first time since I developed neuropathy in 2019 I can walk BAREFOOT without having to wear some kind of supportive slipper or shoe in the house!!

Within days of starting the supplements I had noticed a pin and needles sensation which I thought was a flare up, because the pins started to burn like fire. Several weeks went by I couldn’t understand the pain and why..until I had a lightbulb moment. This is what I was feeling when my nerves were dying before..what if the pain now was the nerves regenerating and reigniting?? I got excited and kept going, upped my dosage to full recommendation on the bottle. My pincer toes started STRAIGHTENING out..especially my pinky toes! My toes were literally uncurling themselves. It would feel like spasms and then my toes would involuntarily stretch. My pain eventually went down to a dull roar. Then I started to noticed it actually HURT to wear my slipper shoes instead! So I started walking on the carpet comfortably without them all week. Today I was able to walk on the hardwood floor with my bare feet without wincing and wobbling for the first time in over five years! And I was strong enough to stand on my bare tippies and hug and kiss my husband and kick one foot behind me lol! Thank you for these life changing supplements!

Hi Tiffany! Thank you so much for sharing your incredible experience with Osteo-Key and Mag-Key! We are truly grateful you took the time to describe your journey in such detail, and we’re absolutely thrilled to hear about the progress you’ve been experiencing. Stories like yours mean so much to us and to others who may be searching for hope and support. Thanks again and thank you for making UNI KEY a part of your health journey:)

When I was unexpectedly diagnosed with heart failure and A-fib a couple of years ago, I knew I needed all the help I could get. Mag-Key only made sense! After all, a magnesium drip was the first thing I received in my ER visit... tells you a lot.

Mag-Key helps calm my heart rhythm, ease tension, and support my energy in a way I can truly feel. I’m so grateful for this formula—it’s become one of my daily essentials. I wouldn't be without it.

Thank you for sharing your experience with Mag-Key! We're so glad to hear that it has become an essential part of your daily routine and has helped with your heart health. It's great to know that our formula has made a positive impact on your well-being. Thanks again and we wish you continued health and wellness!

I have used it for years!

We are so happy to hear that Mag-Key is working for you! Thank you for the great review and for making UNI KEY a part of your health journey :)

This supplement of magnesium has helped me and others get rid of a painful sciatica. Helped many people who followed my recommendation to take it!

So glad to hear Mag-Key has helped you! We appreciate your great review and support, Tamar!
Yours in good health,
UNI KEY Stfaff

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