Effectiveness and Adherence to Treatment with Perindopril/Indapamide/Amlodipine Single-Pill Combination in a Greek Population with Hypertension.

Background: Despite the overwhelming evidence and the established benefits of antihypertensive treatment, adherence to treatment remains low.

Objective: To assess the adherence to treatment with a perindopril/indapamide/amlodipine single-pill combination (SPC), its effectiveness on blood pressure (BP) reduction, as well as the safety and tolerability of this SPC over a 4-month treatment period.

Methods: This multicenter, non-interventional study prospectively included 2285 hypertensive patients on perindopril/indapamide/amlodipine SPC. The data were recorded at baseline, 1 month, and 4 months.

Results: Of the 2285 hypertensive patients included in the study, 50.5% were at "high/very high risk". Mean systolic (SBP)/diastolic (DBP) decreased from 162.3 ± 13.3/93.1 ± 9.3 mmHg at baseline to 129.7 ± 8.3/78.6 ± 7.1 mmHg at 4 months (p < 0.001). Patients with higher baseline BP levels showed greater BP reduction. Patients with hypertension stages 1, 2, and 3 showed mean SBP/DBP reductions of 21.5/10.4 mmHg, 34.2/14.7 mmHg, and 51.2/22.5 mmHg, respectively, at study end (p < 0.001). Only 26 patients (1.1%) prematurely discontinued treatment (0.58% due to an adverse reaction or event).

Conclusions: Perindopril/indapamide/amlodipine SPC decreased BP levels rapidly and significantly. The degree of BP reduction was associated with the severity of hypertension and/or with total cardiovascular risk at baseline. Simplifying the drug regimen by using this SPC improved adherence and showed excellent tolerability.