BioStacks
Best for
Ingredients (1)
Magnesium
100%Dose
500 mg
Target
100–400 mg
Form
Budget
Other Ingredients (7)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Medium Chain Triglyceride OilCarrier
Fractionated oils rich in C8/C10 triglycerides used as neutral carrier or anti-sticking agent
PolydextroseFiller
A synthetic soluble fiber/bulking agent made from glucose
Calcium CarbonateBuffer
Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements
Citric AcidAcidulant
Natural acid derived from citrus fruits
Dicalcium PhosphateBinder
Calcium and phosphorus compound used as binder
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Best taken in the evening
Magnesium oxide is poorly absorbed (~4%) and the most laxative form. Most of a dose stays in the gut, which is why it's mainly used for constipation — a poor pick if you're supplementing for magnesium itself.
With or without food
Space it a couple of hours from Iron and Calcium
On the label
For adults, take one (1) tablet daily, preferably with a meal.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$16.99
Cheaper than 66% of 579 magnesium supplements
Track this supplement in your stack
Get personalized insights, interactions, and coverage recommendations.
Get Started FreeSimilar Supplements
Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.