Comparisons

An amber glass bottle and a white bottle side by side on a sunlit windowsill

Vitamin D3 vs D2: Which Raises Blood Levels More

Two molecules, one job Both forms are inactive precursors. The liver converts either one to 25-hydroxyvitamin D, and the kidneys convert that into the active hormone. Downstream of the first...

Vitamin D3 vs D2: Which Raises Blood Levels More

Two molecules, one job Both forms are inactive precursors. The liver converts either one to 25-hydroxyvitamin D, and the kidneys convert that into the active hormone. Downstream of the first...

Three ceramic dishes holding leafy greens, pumpkin seeds and mineral powder

Magnesium Glycinate vs Citrate vs Oxide: Absorp...

What the label is counting Magnesium supplements are weighed as compounds. The element is only part of that weight, and the percentage varies by salt. Form Elemental magnesium per gram...

Magnesium Glycinate vs Citrate vs Oxide: Absorp...

What the label is counting Magnesium supplements are weighed as compounds. The element is only part of that weight, and the percentage varies by salt. Form Elemental magnesium per gram...

New here? Start with these three

  • Magnesium

    The dose ranges that show up in trials, and the forms that were actually used in them.

    Read the file 

  • Ashwagandha

    Stress and sleep scores, the trial sizes behind them, and where industry funding sits.

    Read the file 

  • Creatine

    What the trials measured outside strength sports, including work in older adults.

    Read the file 
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