Supplement stacks / Famotidine + Magnesium
Can You Take Famotidine with Magnesium?
Famotidine and Magnesium: 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
Taking famotidine with magnesium may lead to reduced absorption of famotidine due to magnesium's potential to alter gastric pH. While both substances are generally safe when taken separately, caution is advised regarding their timing and potential interactions.
Known interactions
Magnesium may alter gastric pH, potentially reducing the absorption of famotidine. It is advisable to space these two substances apart by at least 2 hours.
Famotidine
From the AI-written analysis.
Generally well-tolerated; however, long-term use may lead to vitamin B12 deficiency and other gastrointestinal issues.
Typical dosage: As prescribed or as directed on the label
- Headache
- Dizziness
- Constipation
- Diarrhea
- Consult healthcare provider if experiencing severe abdominal pain or persistent symptoms.
- Use with caution in patients with renal impairment.
Magnesium
From the AI-written analysis.
Generally safe at recommended doses; excessive intake can lead to diarrhea and abdominal cramping.
Typical dosage: 200-400 mg daily.
- Diarrhea
- Nausea
- Abdominal cramping
- Use with caution in individuals with kidney disease.
- High doses may cause gastrointestinal upset.
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.
Watch out for
- Space the intake of famotidine and magnesium by at least 2 hours to avoid potential absorption issues.
Frequently asked questions
Can you take Famotidine and Magnesium together?
Famotidine and Magnesium: 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 Famotidine and Magnesium combination get?
The Famotidine and Magnesium 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 Famotidine and Magnesium?
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 Famotidine and Magnesium?
Space the intake of famotidine and magnesium by at least 2 hours to avoid potential absorption issues.
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Not medical advice
AI-written analysis generated August 28, 2026, checked by our interaction rules · How our analysis works