Filitra 40 mg contains vardenafil, it can generally be taken with or without food. MedlinePlus +1 However, 40 mg is higher than the usual maximum recommended vardenafil dose of 20 mg for erectile dysfunction. Do not take a 40 mg tablet unless a doctor has specifically reviewed and Filitra 40 mg it. Take it only as directed by your doctor. Never combine it with nitrates or other erectile dysfunction medicines such as sildenafil (Zenegra or Kamagra) or tadalafil (Tazzle). Seek urgent medical help for chest pain, fainting, sudden vision or hearing changes, or an erection lasting more than four hours. One important question: Have you already taken Filitra 40 mg, or are you considering taking it for the first time?