Filitra 40 mg should be avoided or used only under strict medical supervision in people with liver problems, because the liver is responsible for breaking down this medicine. When liver function is reduced, the drug can build up in the body and increase side effects. Who should avoid Filitra 40 mg due to liver issues? People with the following conditions should generally avoid it or not use this high dose: Severe liver disease (hepatic failure or end-stage liver disease) Cirrhosis (especially advanced or decompensated cirrhosis) Severely impaired liver function (Child-Pugh Class C) Acute hepatitis or active severe liver inflammation Markedly elevated liver enzymes with symptoms (jaundice, swelling, confusion) Why it is risky in liver disease Vardenafil is metabolized in the liver (mainly via CYP3A4 enzymes) Damaged liver → slower drug breakdown → higher blood levels This increases risk of: Severe headache and dizziness Low blood pressure Fainting Heart strain or irregular heartbeat What about mild to moderate liver issues? In mild or moderate liver impairment (Child-Pugh A or B), doctors may: Avoid 40 mg dose completely Prefer a lower dose (like 5–10 mg) or alternative treatment Monitor closely for side effects