Effectiveness of hydrochlorothiazide in combination with telmisartan and olmesartan in adults with moderate hypertension not controlled with monotherapy: a prospective, randomized, open-label, blinded end point (PROBE), parallel-arm study

Conclusion: The addition of HCTZ 12.5 mg to telmisartan 80 mg monothera- py was associated with greater BP reduction than the addition of the same dose of HCTZ to olmesartan 20 nag monotherapy in these patients previously uncontrolled on monotherapy.