Lasix is a medication available in strengths of 40 mg and 100 mg, containing the active ingredient Furosemide. It is primarily used to treat conditions such as edema (fluid retention due to various causes) and hypertension (high blood pressure). Lasix is produced by reputable pharmaceutical companies and is also marketed under other brand names such as Frusenex, Lasiwin, and Lasipen. Furosemide, also known by these alternative names, is widely recognized for its effectiveness in managing fluid balance in the body.