Supplement stacks / Calcium + Famotidine
Can You Take Calcium with Famotidine?
Calcium and famotidine can generally be taken together, but there are considerations regarding timing and absorption. Calcium may interfere with the absorption of famotidine if taken simultaneously. It is advisable to space them out to ensure optimal absorption of both substances.
Conservative, AI-assisted reading of publicly available medical sources (NIH, Mayo Clinic, WebMD, Examine.com). Informational only — it can't account for your medications, conditions, or genetics.
Suggestion: Take calcium and famotidine at least 2 hours apart.
Generally safe when taken within recommended dosages; excessive intake can lead to hypercalcemia.
Typical dosage: 1000-1200 mg daily, depending on age and gender.
- Constipation
- Nausea
- Stomach upset
- Consult healthcare provider if you have kidney issues or are on certain medications that affect calcium levels.
Generally safe for short-term use; long-term use may lead to vitamin B12 deficiency.
Typical dosage: 20-40 mg once daily, depending on condition.
- Headache
- Dizziness
- Constipation
- Monitor for signs of vitamin B12 deficiency if used long-term.
Take famotidine in the morning and calcium in the evening for optimal results.
- Consider taking calcium in the evening to avoid potential interference with famotidine absorption.
- Space calcium and famotidine at least 2 hours apart to avoid absorption issues.
Can you take Calcium and Famotidine together?
Calcium and famotidine can generally be taken together, but there are considerations regarding timing and absorption. Calcium may interfere with the absorption of famotidine if taken simultaneously. It is advisable to space them out to ensure optimal absorption of both substances.
How safe is the Calcium and Famotidine combination?
Our analysis of publicly available medical sources scores this combination 7/10 (medium risk). This is an informational estimate, not medical advice — always confirm with a healthcare professional.
When should you take Calcium and Famotidine?
Take famotidine in the morning and calcium in the evening for optimal results.
What should you watch out for when combining Calcium and Famotidine?
Space calcium and famotidine at least 2 hours apart to avoid absorption issues.
Taking more than these two? Run your complete supplement list — plus any medications — through the live checker for a combined analysis.
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Analysis generated August 11, 2026 · Sources include NIH, Mayo Clinic, WebMD, and Examine.com · How our analysis works