Efficacy and Tolerability of Olmesartan, Telmisartan, and Losartan in Patients of Stage I Hypertension: A Randomized, Open-label Study.

OBJECTIVES

To compare the efficacy and tolerability of losartan, telmisartan, and olmesartan as antihypertensive agents and evaluate and compare their effects on lipid profile and blood glucose.

MATERIALS AND METHODS

This was a randomized, open-label, parallel-group, comparative study conducted in sixty patients of Stage I hypertension. The eligible patients were randomly allocated into three treatment groups: (1) Tablet olmesartan (20 mg), (2) Tablet telmisartan (40 mg), and (3) Tablet losartan (50 mg). Blood pressure (BP) was assessed at an interval of 2 weeks for 3 months. Fasting blood glucose (FBG) and lipid profile were estimated at baseline and then at 12 weeks.

RESULTS

Olmesartan and telmisartan were more efficacious than losartan in reducing diastolic BP (DBP). There was a statistically significant decrease in mean blood glucose level ( < 0.02) after 12 weeks of treatment in telmisartan group when compared to baseline. Serum total cholesterol, triglycerides, and low-density lipoproteins decreased significantly after 12-week treatment with olmesartan and telmisartan.

CONCLUSIONS

The most efficacious drug in reducing BP is Olmesartan whereas telmisartan and losartan show equal efficacy. Telmisartan shows the most favorable effects on FBG and lipid profile.