Filitra 20 mg contains Vardenafil, a PDE5 inhibitor used to treat erectile dysfunction (ED). While effective, it requires several precautions to ensure safety and reduce the risk of adverse effects: 1. Cardiovascular Precautions Heart conditions: Men with heart problems, angina, arrhythmias, or recent heart attack/stroke should not take Vardenafil without a doctor’s approval. Nitrate drugs: Never combine Filitra with nitrates (e.g., nitroglycerin) or nitric oxide donors, as this can cause dangerous drops in blood pressure. Blood pressure medications: Caution if taking alpha-blockers or other blood pressure drugs, as additive effects may cause dizziness or fainting. 2. General Health Precautions Kidney or liver issues: Dose adjustment may be required in chronic kidney or liver disease. Allergies: Avoid if allergic to vardenafil or any ingredients in the tablet. Vision or hearing problems: Rare side effects include sudden vision or hearing loss; stop the drug and seek medical help immediately. 3. Usage Guidelines Timing: Take 20 mg about 30–60 minutes before ***** activity; do not exceed one dose in 24 hours. Food effects: High-fat meals may delay absorption, reducing effectiveness. Alcohol: Limit alcohol intake, as it can reduce effectiveness and increase dizziness risk. 4. Side Effects Common: headache, flushing, nasal congestion, dizziness, upset stomach. Serious (rare): prolonged erection (>4 hrs), sudden vision/hearing loss, chest pain. Seek immediate medical attention if these occur.