The intravenous administration of furosemide is indicated when a rapid onset of diuresis is desired, e.g., in acute pulmonary edema. If gastrointestinal absorption is impaired or oral medication. Furosemide is indicated as adjunctive therapy in acute pulmonary edema. The intravenous administration of furosemide is indicated when a rapid onset of diuresis is desired, e.g., in acute pulmonary edema. Start with an IV bolus of 20-40 mg administered slowly over 1-2 minutes in patients with fluid overload and adequate blood pressure (SBP ≥90-100 mmHg). 1, 2 If the patient has been on chronic oral diuretics or has significant volume overload, consider starting at 40 mg rather than 20 mg 1 Medscape - Hypertension-specific dosing for Lasix, Furoscix (furosemide), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost. Furosemide injection is used to help treat fluid retention (edema) and swelling that is caused by congestive heart failure, liver disease (cirrhosis), kidney disease, or other medical conditions. Find patient medical information for Furosemide (Lasix) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Furosemide Injection package insert / prescribing information for healthcare professionals. Includes: indications, dosage, adverse reactions and pharmacology.