Medscape - Hypertension-specific dosing for Lasix, Furoscix (furosemide), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and. The typical starting dosage of furosemide for adults with high blood pressure is 40 mg twice per day. Your doctor may adjust your dosage based on how you respond to the medication. For oral dosage forms (oral solution or tablets): For edema: Adults—At first, 20 to 80 milligrams (mg) once a day as a single dose or divided and given twice per day. Your doctor may adjust your dose as needed. Children—Dose is based on body weight and must be determined by your doctor. Recommended Dosage of Furosemide (Lasix) The recommended initial dosage of furosemide is 20-80 mg given as a single oral dose for adults with edema, with dose adjustments based on clinical response. 1 The maximum recommended oral dose of furosemide (Lasix) is 600 mg per day for adults with clinically severe edematous states, though doses should be carefully titrated based on response and monitored for adverse effects. 1 Detailed dosage guidelines and administration information for Lasix (furosemide). Includes dose adjustments, warnings and precautions. The typical Lasix dosage for high blood pressure is 80 mg, usually divided into two doses (40 mg twice a day). Your healthcare provider may adjust your dose until your blood pressure is at the desired goal, which can be different for each person. Furosemide belongs to a class of drugs called diuretics. Furosemide is available in a brand-name version. This article describes the dosages of furosemide, its strengths, and how to take it. Detailed Furosemide dosage information for adults and children. Includes dosages for Hypertension, Edema, Congestive Heart Failure and more; plus renal, liver and dialysis adjustments. Lasix furosemide dosage for 20mg, 40mg, 80mg. Edema, high blood pressure, side effects and drug interactions. Updated August 2026.