Lasix Tablets 40mg – Diuretic for Fluid Retention and SwellingLasix Tablets 40mg Diuretic for Fluid Retention and Swelling Treatment Lasix Tablets 40mg from Sanofi Aventis Pakistan Ltd. is a diuretic medication that helps reduce the amount of excess fluid in the body. It works by increasing the amount of urine produced, which helps eliminate the extra fluid. Lasix is commonly used to treat swelling (also known as oedema) in the ankles, feet, legs, as well as more severe cases like brain and lung swelling caused