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Description
Cramp Defense® Magnesium for Leg Cramps – Made in USA, Truemag AbsorptionLow magnesium is a major cause of leg and muscle cramps, but most people don't get enough from their diet to replace what they lose daily through normal living. Cheap drug store magnesium supplements don't absorb well, have unpleasant side effects, and come bulked with unnecessary fillers and binders. Cramp Defense is the solution. It is the original magnesium supplement for leg cramps and muscle cramps, since 2011. There are many magnesium products
- Low magnesium is a major cause of leg and muscle cramps, but most people don't get enough from their diet to replace what they lose daily through normal living. Cheap drug-store magnesium supplements don't absorb well, have unpleasant side effects, and come bulked with unnecessary fillers and binders.
- Cramp Defense is the solution. It is the original magnesium supplement for leg cramps and muscle cramps, since 2011. There are many magnesium products out there, but only Cramp Defense contains Truemag, a special magnesium compound that is organic, fully-reacted, triple-milled, AND in capsule form. All of these four factors help maximize absorption and minimize side effects. Here's why:
- 1. Magnesium can be either organic or inorganic form. Organic forms are bound to an organic molecule, like malate. This is how nature always "packages" magnesium in fruits and vegetables, meaning our bodies are used to this form. Inorganic forms are like magnesium oxide, which are manufactured by pulverizing and purifying what are essentially rocks that come out of mines. Our bodies aren't made to absorb and handle this.
- 2. Fully-reacted means the magnesium molecule is fully chemically-bound, which is a more energy intensive and expensive process that other companies don't use. Unbound magnesium tends to cause digestive upset, which is why a fully-bound product is so helpful. You can test if your magnesium product is fully bound by it's taste. It should be neutral, not bitter, salty or acidic.
- 3. Triple-milled. Our product is milled three times before encapsulation, to reduce the particle size. This allows it to absorb faster and easier in the stomach.
- 4. Capsules vs. tablets. Capsules just contain powder; tablets are hard, with extra binding components to hold it together, and are coated. This means capsules are faster and easier for your body to absorb.
- Cramp Defense starts working immediately and gets better with time, as your magnesium levels are restored. Take the smallest dose which works for you, which for most people is 1-2 capsules per day. Our data shows that it works for about 80% of people; some people have cramps caused by other factors. Even if you don't have cramps, it is the highest quality magnesium supplement on the market, for general health.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 376 reviews
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Product Reviews
★★★★★ 5
Good value
Model: NewSLS50_52, Model: NewSLS50_52
Working perfectly. Install of stereo equipment and carpet left me wanting some heat and sound resistant materials.
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Reviewed in the United States on March 23, 2026
★★★★★ 5
BUY THIS ONE!
Model: NewSLS50_52
This is one of the good ones. There are other brands just as good, and manny brands are worse, but this handles well, rolls down easily, doesn't come off at all easily, and adapts to dips and curves like a champ.
Appropriately heavy and dead, I'm happy with the way it smothers panel resonances and even at muffling direct sound, like a big hand over my Uncle Harry's eternally noisy mouth. You can rip the foil but you have to work hard at doing that.
Remember to buy a brayer; you can roll overlaps nice and thin. Also remember to pre-wipe the sheet metal with a decent solvent like acetone or Stoddard/Varsol. It should last forever.
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Reviewed in the United States on April 26, 2025
★★★★★ 5
Good stuff, but watch the temp
Model: NewSLS50_52
I used this in my single cab pickup truck (89 ford.) It only took half the box (10 sheets or 25 square feet) to do the floors, but I bought the big box because I plan to do the doors, back wall, and maybe the roof as well. One thing I learned is that the temperature matters when you’re doing the installation. It was around 55F when I started in the evening, and when it dipped down into the 40s the sheets would not stick to the metal, and were hard to compress with the roller. That’s why I ended up only doing the floors and not any vertical surfaces; i will have to wait for a nice hot day. The other thing is that the foil layer on top is razor sharp at the edges, definitely wear gloves! I didn’t notice until after but I have little papercuts all over my fingers. Aside from those things, the install was easy and straightforward. The sheets cut easily with scissors, and any goo that ends up on your hands or scissors can be cleaned up with acetone (nail polish remover), or lacquer thinner. I would use this stuff again.
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Reviewed in the United States on November 16, 2023
★★★★★ 5
Very efficient!
Model: NewSLS50_52
Amazing the difference it makes on dumping the noise. Very easy to install. Pell and stick literally! Great!
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Reviewed in the United States on November 23, 2025
★★★★★ 5
Cost effective
Style: 8.7 sqft(8 pcs), Material Type: Aluminum 197 mil
Nice, cost effective material. It stuck nicely to the door and was fairly easy to use. The grid marks on the back made it easy to cut. I would not rank it up with other materials in sound and heat isolation, but it did cut down the overall vibrations on the door panels and I did not feel heat immediately from the floor area as i did with bare metal. If you are working with a budget and want modest improvement, this material will work well over most stock materials.
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Reviewed in the United States on June 7, 2026