Olmesartan vs losartan comparative efficacy
Pro Research Analysisby 
Searched over 200M research papers
Comparative Efficacy of Olmesartan vs Losartan in Hypertension Treatment
Blood Pressure Reduction: Olmesartan vs Losartan
Multiple studies consistently show that olmesartan is more effective than losartan in reducing both diastolic and systolic blood pressure in patients with hypertension. In randomized, double-blind trials, olmesartan at a starting dose of 20 mg once daily led to a significantly greater reduction in sitting cuff diastolic blood pressure (DBP) compared to losartan 50 mg once daily. For example, one study found olmesartan reduced DBP by 13.5 mm Hg versus 8.2 mm Hg for losartan after 8 weeks of treatment, with similar trends observed for systolic blood pressure (SBP) reductions and 24-hour ambulatory blood pressure monitoring results Mujeeb2015Oparil2001Jha2019+4 MORE.
Goal Blood Pressure Attainment Rates
Olmesartan also outperformed losartan in helping more patients achieve target blood pressure goals. In one analysis, about 50% more patients reached the standard goal of <140/90 mm Hg with olmesartan compared to losartan, and nearly three times as many reached the stricter goal of <130/85 mm Hg Oparil2004Punzi2012Giles2007. These findings were consistent across both patients new to antihypertensive therapy and those previously treated .
Durability and Consistency of Blood Pressure Control
Olmesartan provided a more durable and consistent blood pressure-lowering effect over a 24-hour period compared to losartan. Trough/peak ratios for both DBP and SBP were higher with olmesartan, indicating better sustained control throughout the dosing interval .
Efficacy Across Different Populations
The superior efficacy of olmesartan over losartan was observed in various patient populations, including those with mild to moderate and moderate to severe hypertension, and across different ethnic groups, including Chinese patients Ball2001Zhu2006Ya-Rong2009. Some studies noted that while both drugs significantly reduced blood pressure, the difference between them was not always statistically significant in every subgroup, but the overall trend favored olmesartan .
Safety and Tolerability
Both olmesartan and losartan were well tolerated, with similar rates of mild and transient adverse events reported in clinical trials. No significant differences in safety profiles were observed between the two drugs Mujeeb2015Oparil2001Zhu2006+2 MORE.
Conclusion
In summary, olmesartan is generally more effective than losartan in lowering blood pressure and helping patients achieve target blood pressure goals, with a similar safety profile. This advantage is consistent across different studies, patient populations, and dosing regimens. Both medications are safe and well tolerated, but olmesartan offers superior efficacy for most patients with hypertension.
Sources and full results
Most relevant research papers on this topic