Supplement stacks / Calcium + Famotidine
Can You Take Calcium with Famotidine?
Calcium and Famotidine: one interaction flagged, scored 7/10 (medium risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.
Safety at a glance
This score comes from an AI-written analysis of the pair. Our interaction rules check it and can only make it stricter, never milder. Informational only: it can't account for your medications, conditions, or genetics.
What the AI-written analysis says
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.
Known interactions
Suggestion: Take calcium and famotidine at least 2 hours apart.
Calcium
From the AI-written analysis.
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.
Famotidine
From the AI-written analysis.
Generally safe for short-term use; long-term use may lead to vitamin B12 deficiency.
Typical dosage: As prescribed or as directed on the label
- Headache
- Dizziness
- Constipation
- Monitor for signs of vitamin B12 deficiency if used long-term.
Timing
Take as prescribed — we do not schedule prescription medications. Follow the label or your prescriber, and ask your pharmacist before changing when you take it.
Recommendations
- Consider taking calcium in the evening to avoid potential interference with famotidine absorption.
Watch out for
- Space calcium and famotidine at least 2 hours apart to avoid absorption issues.
Frequently asked questions
Can you take Calcium and Famotidine together?
Calcium and Famotidine: one interaction flagged, scored 7/10 (medium risk). The count and score come from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice.
What score does the Calcium and Famotidine combination get?
The Calcium and Famotidine combination is scored 7/10 (medium risk). The score comes from an AI-written analysis checked against our interaction rules, which can only make it stricter. Not medical advice. Always confirm with a healthcare professional.
When should you take Calcium and Famotidine?
Take as prescribed — we do not schedule prescription medications. Follow the label or your prescriber, and ask your pharmacist before changing when you take it.
What should you watch out for when combining Calcium and Famotidine?
Space calcium and famotidine at least 2 hours apart to avoid absorption issues.
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Not medical advice
AI-written analysis generated August 11, 2026, checked by our interaction rules · How our analysis works