When starting voriconazole for the first time, it’s important to provide clear, practical, and safety-focused information. Here’s what a patient should be told:
1. How to Take It:
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Take voriconazole on an empty stomach — at least 1 hour before or 1 hour after food.
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Take it exactly as prescribed — usually twice daily at regular times.
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Don’t stop suddenly unless advised.
2. Common Side Effects to Watch For:
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Visual disturbances (blurry vision, changes in color or brightness) — often early on and usually temporary.
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Photosensitivity (sunburn easily) — wear sunscreen and protective clothing.
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Nausea or upset stomach
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Skin rashes — report any rash, as rare serious reactions can occur.
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Liver irritation — signs include dark urine, yellowing of skin/eyes, or upper right abdominal pain.
3. Serious Side Effects – Report Immediately:
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Visual symptoms that worsen or don’t go away
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Severe rash or peeling skin
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Confusion, hallucinations, or tremors
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Signs of liver trouble (yellow eyes, dark urine, pale stools)
4. Blood Monitoring Needed:
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Liver function tests (LFTs) are usually checked before treatment and regularly during treatment.
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Blood levels of voriconazole may also be monitored, especially if:
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You’re not responding
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Side effects occur
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You’re on other medications that interact
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5. Medication Interactions:
Voriconazole interacts with many drugs including:
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Steroids (may increase steroid levels)
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Warfarin, statins, some diabetes medications
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Proton pump inhibitors (like omeprazole)
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Some heart or seizure drugs
Always tell your doctor or pharmacist about all medications and supplements.
6. Driving and Activities:
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Avoid driving or operating machinery if you have visual symptoms or feel dizzy.
7. Alcohol and Grapefruit:
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Avoid or limit alcohol, as it may increase side effects.
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Avoid grapefruit — it can affect how voriconazole is processed.
