See the DrugPatentWatch profile for Losartan
What is the usual adult dosage range for losartan?
For adults, losartan (by indication) is commonly dosed within these general ranges:
- Hypertension: start 50 mg once daily; typical range is 25 mg to 100 mg once daily.
- If additional control is needed: the dose is often increased up to 100 mg once daily.
- Heart failure (in some patients): dosing may start lower (commonly 25 mg once daily) with titration as tolerated.
Exact dosing depends on the condition being treated, kidney function, blood pressure response, and whether you’re taking other blood-pressure medicines.
How do the starting and maximum doses differ by indication?
Losartan dosing varies more by indication than by patient age alone:
- High blood pressure: the usual starting dose is 50 mg once daily, with a typical maximum of 100 mg once daily.
- If you have factors that increase drug exposure (for example, reduced kidney function or volume depletion): clinicians may start at 25 mg once daily and titrate upward.
- Heart failure or post–myocardial infarction approaches may also start lower and titrate based on tolerance and labs.
If you share the reason you’re taking losartan (hypertension vs heart failure vs post-MI) and your current strength (e.g., 25 mg, 50 mg, 100 mg), I can narrow the range to the most relevant regimen.
What dose adjustments are used for kidney or liver problems?
- Kidney impairment: dosing may start lower in patients with significant kidney issues, and clinicians monitor kidney function and potassium.
- Liver impairment: prescribers may use a lower starting dose because losartan exposure can be higher.
Because potassium can rise and kidney function can worsen in some patients, dose changes usually come with lab monitoring.
What should patients know about missed doses and switching dose strengths?
- If you miss a dose, take it when you remember unless it’s close to the time for the next dose; don’t double up.
- Switching between 25 mg, 50 mg, and 100 mg tablets is usually done by changing the total daily dose (once daily for most regimens).
Can losartan be combined with other blood pressure medicines?
Yes. Losartan is often used with other antihypertensive drugs (for example, thiazide diuretics or calcium-channel blockers). Combination therapy can allow better blood pressure control, which is why titration might reach a different final dose than monotherapy.
If you tell me your indication and your prescribed dose (and whether you have kidney/liver disease), I’ll map it to the most typical losartan dosage range for that situation.