Magnesium is a natural osmotic mineral, meaning it can draw water into the intestines. Some forms do this much more strongly, which is why certain types are used specifically as laxatives.
When magnesium rushes through the digestive system, absorption decreases significantly. The body simply doesn’t have time to uptake the mineral. And when this happens, the nutrients in the food eaten with it may also be less effectively absorbed, because everything is passing through too quickly.
So the goal for daily use is a form that absorbs efficiently without overwhelming the digestive system.
Common Types of Magnesium & How Well They’re Tolerated
Below is a consumer-friendly overview of widely used forms. (This is general educational information, not medical advice.)
1. Magnesium Oxide
- Absorption: Low (~4%)
- Tolerance: Often the least tolerated
- Notes: Very commonly causes stomach discomfort and diarrhea; frequently used as a laxative. Not ideal for people seeking daily magnesium replenishment.
2. Magnesium Citrate
- Absorption: Moderate to good
- Tolerance: Moderate; well tolerated at lower doses
- Notes: Citrate can stimulate the digestive tract, so higher doses may cause loose stools in sensitive individuals.
3. Magnesium Glycinate
- Absorption: Good
- Tolerance: Generally very gentle
- Notes: A chelated form that tends to be easy on the stomach. Popular for those who prefer something calming and non-laxative.
4. Magnesium Chloride (Liquid / Ionic Forms)
- Absorption: Very high (one of the most bioavailable forms)
- Tolerance: Generally very well tolerated
- Notes: Because it is already ionic, the body absorbs it easily, and it is less likely to cause digestive upset. This is the form naturally found in deep ocean water.
5. Magnesium L-Threonate
- Absorption: Good
- Tolerance: Generally gentle
- Notes: Often used for cognitive support, but can sometimes be expensive. Typically well tolerated as long as doses are moderate.
Why Absorption Matters for Gentle Digestion
When magnesium is poorly absorbed or too strong osmotically, it can cause:
- Stomach cramping
- Loose stools
- Diarrhea
- Urgency or discomfort
When that happens, not only is the magnesium not being absorbed effectively—but the food and nutrients consumed at the same time may also pass through too quickly. That’s why finding a form that delivers usable magnesium without discomfort is so important.
Why Deep Ocean Magnesium Is Often Better Tolerated
Your magnesium is:
Ionic from the start
It comes naturally in its ionic state from deep ocean water—meaning the body doesn’t need to break it down to absorb it.
High bioavailability
Because it is ionic magnesium chloride rich in trace minerals, it is one of the most readily absorbed forms available.
Gentle on the stomach
Most people find ionic magnesium chloride far easier on digestion than oxide or high-dose citrate. The trace minerals naturally present in deep ocean water may also support smoother uptake.
Naturally balanced—nothing added
Single-ingredient, clean, and derived from pristine deep ocean waters 2,200 feet below the surface. No fillers, no flavors, no compounds that irritate digestion.
Allows the body to use more of the magnesium you take
Because it absorbs efficiently, more magnesium is utilized—and less is wasted.
Who Might Prefer Ionic, Deep Ocean Magnesium?
People looking for magnesium that is:
- Well tolerated
- Fast absorbing
- Naturally sourced
- Gentle for daily use
- Easy to dose drop-by-drop
- Clean, simple, and free from unnecessary additives
Final Thoughts: Choose a Magnesium That Works With Your Body
Each person’s digestive system is different, and finding the right magnesium can be a game-changer. If a certain form causes discomfort or diarrhea, it’s less likely to be absorbed—and that means you’re missing out on the benefits.
A clean, naturally ionic magnesium like our Deep Ocean Magnesium offers a highly bioavailable, gentle option for daily replenishment—without the digestive issues many people experience from other forms.
