Pill finder · 3 catalogued versions

carbonate ion; magnesium cation

Pill catalog

Rx/OTC variants · openFDA + DailyMed (public domain) · draft, pending review

This drug comes in 3different versions. Make sure you’re looking at the right one — use the search above to find your exact pill by imprint, color, or shape.

Showing 3 of 3 variants

Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.

Strength: CALCIUM CARBONATE 550 mg;MAGNESIUM HYDROXIDE 110 mg;
Imprint: R
Color: WHITE
Shape: ROUND
Score: 1
Form: C42893
NDC: 0016 ↗ · 2026-06-18

Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.

Strength: CALCIUM CARBONATE 675 mg;MAGNESIUM HYDROXIDE 135 mg;
Imprint: R X
Color: RED
Shape: ROUND
Score: 1
Form: C42893
NDC: 0013 ↗ · 2026-06-18

Illustration based on reported characteristics. Appearance varies — identical-looking pills can contain completely different substances. Always test.

Strength: CALCIUM CARBONATE 675 mg;MAGNESIUM HYDROXIDE 135 mg;
Imprint: R X
Color: WHITE
Shape: ROUND
Score: 1
Form: C42893
NDC: 0020 ↗ · 2026-06-18