Filitra can cause headaches. Headache is one of the common, mild side effects reported with Filitra, which contains the active ingredient vardenafil, a PDE5 inhibitor used to treat erectile dysfunction.  Why Headaches Happen Filitra works by relaxing blood vessels to increase blood flow, and this vasodilation (widening of blood vessels) can also affect blood flow in the head — sometimes leading to headache or a feeling of pressure. Headache with vardenafil is reported as a frequent side effect in patient information and product descriptions. Typical Filitra Effects (Mild & Temporary) Many men taking Filitra experience mild, short‑lasting symptoms, including: Headache Facial flushing (warmth/redness) Nasal congestion Dizziness Indigestion/upset stomach These usually resolve within a few hours as the medication wears off.  When to Seek Advice If a headache is severe, prolonged, or accompanied by other serious symptoms (like chest pain, vision or hearing changes, or fainting), stop the medication and seek medical attention immediately.   Tips to Reduce Headache Risk Stay hydrated Avoid excessive alcohol around dosing Take as directed and avoid exceeding the recommended dose In short: Yes — Filitra commonly causes headaches in some users, but these are usually mild and temporary when used appropriately.