Supplement stacks / Famotidine + Vitamin B12
Can You Take Famotidine with Vitamin B12?
Famotidine and Vitamin B12: one interaction flagged, scored 6/10 (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 Vitamin B12 is generally considered safe, but there are some considerations regarding absorption and timing. Famotidine may reduce the absorption of Vitamin B12, so it is advisable to space them apart. Overall, the combination poses a low risk for adverse effects.
Known interactions
Famotidine may reduce the absorption of Vitamin B12 due to its effect on stomach acidity.
Famotidine
From the AI-written analysis.
Generally safe for short-term use; monitor for gastrointestinal symptoms.
Typical dosage: As prescribed or as directed on the label
- Headache
- Dizziness
- Constipation
- Consult healthcare provider if symptoms persist.
Vitamin B12
From the AI-written analysis.
Generally safe; however, absorption may be affected by medications like famotidine.
Typical dosage: 250-500 mcg daily
- Mild diarrhea
- Itching
- Rash
- Consult healthcare provider if taking famotidine; monitor for signs of deficiency.
Also commonly mentioned
These come up in questions about this combination. They are not part of the pair above. From the AI-written analysis.
Vitamin B1 (Thiamine)
Generally safe; no known interactions with famotidine.
Typical dosage: 1.1-1.2 mg daily
- Rare allergic reactions
- Consult healthcare provider if taking other medications.
Vitamin B Complex
Generally safe; typically well-tolerated.
Typical dosage: Follow manufacturer guidelines, usually 50-100 mg of each B vitamin.
- Nausea
- Headache
- Fatigue
- Consult healthcare provider if taking famotidine.
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 Vitamin B12 at least 4 hours apart from famotidine to enhance absorption.
Watch out for
- Monitor for signs of Vitamin B12 deficiency if taking famotidine regularly.
Frequently asked questions
Can you take Famotidine and Vitamin B12 together?
Famotidine and Vitamin B12: one interaction flagged, scored 6/10 (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 Vitamin B12 combination get?
The Famotidine and Vitamin B12 combination is scored 6/10 (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 Vitamin B12?
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 Vitamin B12?
Monitor for signs of Vitamin B12 deficiency if taking famotidine regularly.
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Not medical advice
AI-written analysis generated August 11, 2026, checked by our interaction rules · How our analysis works