Filitra 20 mg requires medical advice because it is a prescription-strength medicine used to treat erectile dysfunction (ED), and taking it without checking your health and medications can cause serious side effects. Filitra 20 mg generally contains vardenafil 20 mg, a PDE5 inhibitor that increases blood flow to the penis and helps achieve and maintain an erection during sexual stimulation. Why is medical advice necessary? There are five important reasons: 1. Blood pressure can drop dangerously: Filitra can lower blood pressure. Filitra 20 mg it with nitrate medicines used for chest pain (such as nitroglycerin or isosorbide) can cause a potentially life-threatening drop. 2. Heart-related risks: People with certain heart conditions, recent heart attacks, strokes, or uncontrolled blood pressure may not be suitable candidates. 3. Medication interactions: Certain antibiotics, antifungals, alpha-blockers and other medicines can increase vardenafil levels or cause complications. 4. Prolonged erections: Rarely, it can cause priapism (an erection lasting more than four hours), which requires emergency treatment. 5. Vision and hearing problems: Rare cases of sudden vision or hearing loss have been reported.