Skip to Content

Losartan Dosage

Applies to the following strength(s): 25 mg ; 50 mg ; 100 mg

The information at Drugs.com is not a substitute for medical advice. Always consult your doctor or pharmacist.

Usual Adult Dose for:

Usual Pediatric Dose for:

Additional dosage information:

Usual Adult Dose for Diabetic Nephropathy

Initial dose: 50 mg orally once a day
Maintenance dose: 25 to 100 mg orally per day in 1 or 2 divided doses

Comments:
-If hypertensive patients with left ventricular hypertrophy or type 2 diabetic nephropathy patients require titration from initial dose, increase to 100 mg orally once a day.
-Antihypertension is substantially present within 1 week but in some studies the maximal effect occurred in 3 to 6 weeks.

Uses:
-Treatment of hypertension.
-To reduce the risk of stroke in patients with hypertension and left ventricular hypertrophy.
-Treatment of diabetic nephropathy with an elevated serum creatinine and proteinuria (urinary albumin to creatinine ratio 300 mg/g or greater) in patients with type 2 diabetes and a history of hypertension.

Usual Adult Dose for Hypertension

Initial dose: 50 mg orally once a day
Maintenance dose: 25 to 100 mg orally per day in 1 or 2 divided doses

Comments:
-If hypertensive patients with left ventricular hypertrophy or type 2 diabetic nephropathy patients require titration from initial dose, increase to 100 mg orally once a day.
-Antihypertension is substantially present within 1 week but in some studies the maximal effect occurred in 3 to 6 weeks.

Uses:
-Treatment of hypertension.
-To reduce the risk of stroke in patients with hypertension and left ventricular hypertrophy.
-Treatment of diabetic nephropathy with an elevated serum creatinine and proteinuria (urinary albumin to creatinine ratio 300 mg/g or greater) in patients with type 2 diabetes and a history of hypertension.

Usual Pediatric Dose for Hypertension

6 Years or Older:
Initial dose: 0.7 mg/kg orally once a day (up to 50 mg total)

Comments:
-May be given as a tablet or suspension.
-Doses above 1.4 mg/kg (or 100 mg) daily have not been studied in pediatric patients.

Renal Dose Adjustments

Adult:
No adjustment recommended

Pediatric:
GFR less than 30 mL/min/1.73 m2: Not recommended

Liver Dose Adjustments

Adult:
Initial dose: 25 mg orally once a day

Pediatric:
Dose adjustment(s) may be required; however, no specific guidelines have been suggested. Caution is recommended.

Dose Adjustments

Patients with possible intravascular volume depletion:
-Initial dose: 25 mg orally once a day

Precautions

US BOXED WARNING:
-FETAL TOXICITY: If pregnancy is detected, discontinue this drug as soon as possible. Drugs that act directly on the renin angiotensin system (RAS) can cause injury and death to the developing fetus.

Safety and efficacy have not been established in patients younger than 6 years.

Consult WARNINGS section for additional precautions.

Dialysis

No adjustment recommended

Other Comments

Administration advice: Pediatric dose may be administered as a tablet or suspension.

Storage requirements: Prepared suspension should be refrigerated at 2 to 8C (36 to 46F) and can be stored for up to 4 weeks.

Reconstitution/preparation techniques: The manufacturer product information should be consulted.

Monitoring:
-Monitor renal function periodically.
-Closely monitor potassium and CrCl, especially in patients with heart failure or CrCl 30 to 50 mL/min.

Patient advice:
-Females of childbearing age should be informed of the consequences of exposure to this drug during pregnancy; ask these patients to report pregnancies as soon as possible.
-Advise patients against using potassium-sparing diuretics, potassium supplements or potassium-containing salt substitutes without consulting their physician.

Hide