SAFE — No Known Interaction
🟢 SAFE — Vitamin K2 and Fosfomycin can be taken together safely.
Evidence level: MODERATE
Vitamin K2 and Fosfomycin are generally considered safe to use together based on current medical evidence. No adverse interactions have been reported.
No clinically significant interaction between Vitamin K2 and Fosfomycin has been identified in medical literature or FDA drug labeling.
No interaction documented between Vitamin K2 and Fosfomycin. Always inform your healthcare provider about all supplements you take.
Space Vitamin K2 at least 2 hours from Fosfomycin. Fat-soluble vitamins (A, D, E, K) should be taken with a fatty meal. Vitamin K can counteract certain antibiotics' effect on gut flora vitamin K production. Vitamin C may acidify urine, affecting some antibiotic excretion rates.
Higher risk for: those with liver or renal impairment, elderly, concurrent use of nephrotoxic or hepatotoxic drugs, history of C. difficile infection, or those on narrow therapeutic index medications (warfarin, digoxin).
Monitor for altered effectiveness and side effects when combining Vitamin K2 with Fosfomycin. Antibiotics can affect liver enzymes and alter the blood levels of other medications. Watch for: unusual nausea, vomiting, diarrhea (especially watery or bloody), stomach cramps, skin rash, dizziness, or signs the other medication is working differently than usual. When to seek emergency help: Severe allergic reaction (difficulty breathing, swelling of face/throat, hives), severe or persistent diarrhea (possible C. difficile infection), yellowing of skin or eyes, dark urine, or irregular heartbeat. Complete the full antibiotic course as prescribed.
No urgent need to discuss, but always keep your doctor informed of your full supplement and medication list. Say: "I take Vitamin K2 and Fosfomycin — is that OK?"
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 K2 and Fosfomycin are generally considered safe to use together based on current medical evidence. No adverse interactions have been reported.
Space Vitamin K2 at least 2 hours from Fosfomycin. Fat-soluble vitamins (A, D, E, K) should be taken with a fatty meal. Vitamin K can counteract certain antibiotics' effect on gut flora vitamin K production. Vitamin C may acidify urine, affecting some antibiotic excretion rates.
Monitor for altered effectiveness and side effects when combining Vitamin K2 with Fosfomycin. Antibiotics can affect liver enzymes and alter the blood levels of other medications. Watch for: unusual nausea, vomiting, diarrhea (especially watery or bloody), stomach cramps, skin rash, dizziness, or signs the other medication is working differently than usual. When to seek emergency help: Severe allergic reaction (difficulty breathing, swelling of face/throat, hives), severe or persistent diarrhea (possible C. difficile infection), yellowing of skin or eyes, dark urine, or irregular heartbeat. Complete the full antibiotic course as prescribed.
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. Say: "I take Vitamin K2 and Fosfomycin — is that OK?"
Or browse the full interaction database (121,000+ pairs).