Absorption

Calcium with or without food?

Take Calcium with food. Carbonate forms need stomach acid from food. Citrate can be taken without food.
With food
00:00
scanning your day

Pinned to with food, the best window for Calcium.

Why food helps

Carbonate forms need stomach acid from food. Citrate can be taken without food.

Don't take with

  • Iron (blocks up to 60%)
  • Zinc
  • Levothyroxine (space 4 hours)
  • Quinolone or tetracycline antibiotics

Keep exploring

Build your schedule

Your supplements,
finally on a schedule.

Five questions. One PDF. Zero guesswork. Take the wizard now and get a daily plan you'll actually follow.

60-second wizardFree PDF scheduleNo signup, no tracking