Magnesium

Magnesium supplements come in many forms, and each has its own strengths depending on how the body absorbs and uses it. Some types are best for relaxation, others for digestion, and some are uniquely suited for brain health. What sets Metagenics apart is that we use activated, chelated magnesium—up to 4X better absorbed than the standard forms found on grocery store shelves—so you feel the results. 

We also offer magnesium complexes that combine multiple forms in one formula, designed to support overlapping needs like stress, energy, and recovery all at once. Whether you’re looking to unwind before bed, support digestion, or boost brain power, Metagenics has a targeted formula to help.

If you’re new to Metagenics, try us risk-free with 30% off your first order using code 30OFF at checkout. We know we’re more of an investment than grocery store supplements—but that’s because ours actually work, have guaranteed purity and potency, and they’re backed by our 60-day satisfaction guarantee. 

The best magnesium supplement is the one that fits your specific goals. If you’re seeking all-around wellness support, Magnesium Glycinate is gentle and versatile. For digestive comfort and regularity, Magnesium Citrate is often preferred. If focus and memory are top of mind, Magtein Magnesium L-Threonate is uniquely formulated to cross the blood-brain barrier. 

For more specialized support, MagActive Night helps with restful sleep, MagActive Muscle aids recovery, and Metarelax supports mood balance. Choosing the right magnesium supplement comes down to what you want it to do for you.  

If you’re shopping with Metagenics for the first time, you can try our magnesium supplements today with 30% off your order using code 30OFF at checkout—backed by our 60-day satisfaction guarantee. 

Your timing matters less than consistency, but the best time to take magnesium often depends on your goals and the form you’re using.  

Magnesium supports over 300 processes in the body, including relaxation, digestion, and energy metabolism. For sleep or stress relief, calming forms like MagActive Night or MagActive Relax are usually taken in the evening to help quiet the nervous system and prepare for restful sleep. For digestive comfort or muscle support, magnesium citrate can be taken any time of day when it fits your routine. For daily wellness, glycinate and L-threonate are versatile enough for morning or evening use. The key is choosing a time you’ll remember every day and following your product’s instructions. 

If you’ve never tried Metagenics before, start now with 30% off your first order using code 30OFF—we’re more effective than grocery store brands, and we back it up with our 60-day satisfaction guarantee. 

How quickly magnesium works depends on the form you’re taking and what you're using it for: 

1) For digestion/constipation: magnesium citrate can work quickly (within a day) to support bowel regularity.¹ 

2) For relaxation, stress, or sleep: magnesium glycinate or magnesium L-threonate may take a few days to start having a calming effect, with sleep quality and stress improving gradually with consistent use.²⁻⁴ 

3) For energy, muscle function, or long-term wellness: Benefits like improved recovery, steady energy, or reduced cramping may take several weeks of daily use, since magnesium builds up gradually in your tissues.⁵⁻⁷ 

Because magnesium plays both short-term and long-term roles, the key is taking it consistently. That’s why many people choose to subscribe monthly. If you’re new to Metagenics, you can also get 30% off your first order using code 30OFF at checkout. Experience the Metagenics difference risk-free with our 60-day satisfaction guarantee. 

The best magnesium supplement brand is one that combines science, quality, & trust. Metagenics has been leading the way in supplement science for +40 years and is trusted by +50K healthcare practitioners worldwide. Until recently, you could only get our products through a doctor’s office—because our formulas are professional grade. We use highly absorbable, gentle forms of magnesium and test our products at every level—ingredients, finished formulas, and even capsule shells. 

We also go beyond FDA requirements with voluntary third-party verification, so you can feel confident in every bottle. That’s why Metagenics stands behind a 60-day satisfaction guarantee. If you don’t notice a difference, you get your money back.  

If you’re looking for a magnesium brand you can trust, try Metagenics risk-free. First-time customers, get 30% off your order with code 30OFF at checkout—because we know trying a premium product is an investment, and we know it’s worth it. 

Most people tolerate magnesium supplements very well when taken as directed. The most common side effect is digestive upset or loose stools, especially with less absorbable forms like magnesium oxide or with doses higher than the body can use at one time. At Metagenics, we use chelated, activated forms of magnesium that are easier to absorb and gentler on the stomach, reducing the risk of these effects. 

Some people may still notice mild cramping or nausea if they take too much at once, which is why it’s important to follow the serving size on your label. Every body is different, but choosing high-quality magnesium supplements makes a big difference in both effectiveness and tolerability. 

If you’re a first-time customer, you can try Metagenics magnesium supplements risk-free with 30% off your order using code 30OFF at checkout—plus our 60-day satisfaction guarantee for total peace of mind. 

It can be a challenge to buy magnesium supplements online because you don’t always know if they’ll actually make a difference for you. At Metagenics, we remove that uncertainty with our 60-day satisfaction guarantee: if you don’t love how you feel, you get your money back—no questions asked. We’ve been trusted by healthcare practitioners for over 40 years, and we stand behind every product we make.

If this is your first time shopping with Metagenics, you can also save 30% by entering code 30OFF at checkout. We believe you’ll feel the difference with our professional-grade magnesium supplements, and if you don’t, we’ll make it right.