Filitra 20 mg contains Vardenafil 20 mg, a PDE5 inhibitor used for erectile dysfunction (ED). The maximum safe dose depends on standard clinical guidelines for Vardenafil. **Maximum Safe Dose of Filitra 20 mg Standard Recommendation: Starting dose: 10 mg (Filitra 10 mg) for most men. Effective on-demand dose: 20 mg, taken 30–60 minutes before sexual activity. Maximum Safe Limit: One 20 mg tablet per 24 hours is the maximum recommended dose. Taking more than this increases the risk of serious side effects, including: Headache, dizziness, flushing Rapid heartbeat, palpitations Prolonged erection (priapism) Vision disturbances or Filitra 20 mg hearing loss Special Considerations: Men with liver or kidney disease may require lower doses. Men on nitrates or nitric oxide donors must not take Vardenafil, even at recommended doses. Older men or those on interacting medications (e.g., certain antifungals, HIV protease inhibitors, or alpha-blockers) should consult a doctor before using. For Filitra 20 mg, the maximum safe dose is one tablet per 24 hours. It should never be exceeded, and medical consultation is advised if you have heart, liver, kidney, or other serious health conditions. I can also make a safe dosage chart for Filitra 10, 20, and 40 mg, showing starting dose, maximum dose, and precautions to make it easier to follow.