SAFE — No Known Interaction
🟢 SAFE — Vitamin B12 and Fluconazole can be taken together safely.
Evidence level: MODERATE
Vitamin B12 and Fluconazole are safe to take together. No adverse interactions have been reported in medical literature.
No clinically significant interaction between Vitamin B12 and Fluconazole has been documented in medical literature or FDA drug labeling.
No interaction between Vitamin B12 and Fluconazole has been documented. As a best practice, keep a list of everything you take — including Vitamin B12 — and share it with your healthcare provider at every visit. This helps them spot potential issues early.
Space Vitamin B12 at least 2 hours from Fluconazole. Azole antifungals can affect liver metabolism of fat-soluble vitamins. Take fat-soluble vitamins (A, D, E, K) with a fatty meal at a separate time from the antifungal.
Higher risk for: those with liver impairment (azole antifungals are hepatotoxic), concurrent CYP3A4 substrate use, elderly, renal impairment, or those on multiple QT-prolonging medications.
Antifungal medications are potent enzyme inhibitors — monitor carefully when combining Vitamin B12 with Fluconazole. Watch for: unusual nausea, vomiting, abdominal pain, yellowing of skin or eyes (liver stress), headache, dizziness, skin rash, or signs the other medication is stronger or weaker than expected. When to seek emergency help: Severe abdominal pain, dark urine with yellow skin/eyes, irregular heartbeat, fainting, severe rash with blistering, difficulty breathing, or swelling of face/tongue. Report all medications to your prescriber — dose adjustments may be needed.
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. An up-to-date list helps them make the best treatment decisions.
Safe combination at standard doses. Continue your medication as prescribed. Inform your doctor or pharmacist that you are using both, so they can monitor for any changes over time.
Vitamin B12 and Fluconazole are safe to take together. No adverse interactions have been reported in medical literature.
Space Vitamin B12 at least 2 hours from Fluconazole. Azole antifungals can affect liver metabolism of fat-soluble vitamins. Take fat-soluble vitamins (A, D, E, K) with a fatty meal at a separate time from the antifungal.
Antifungal medications are potent enzyme inhibitors — monitor carefully when combining Vitamin B12 with Fluconazole. Watch for: unusual nausea, vomiting, abdominal pain, yellowing of skin or eyes (liver stress), headache, dizziness, skin rash, or signs the other medication is stronger or weaker than expected. When to seek emergency help: Severe abdominal pain, dark urine with yellow skin/eyes, irregular heartbeat, fainting, severe rash with blistering, difficulty breathing, or swelling of face/tongue. Report all medications to your prescriber — dose adjustments may be needed.
Safe combination at standard doses. Continue your medication as prescribed. Inform your doctor or pharmacist that you are using both, so they can monitor for any changes over time.
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. An up-to-date list helps them make the best treatment decisions.
Or browse the full interaction database (121,000+ pairs).