Dose-effect relationship of rilmenidine after chronic administration

Area of Science:

• Pharmacology
• Cardiovascular Medicine

Background:

• Hypertension is a prevalent condition requiring effective and well-tolerated treatments.
• Rilmenidine is an antihypertensive agent with a known mechanism of action.

Purpose of the Study:

• To compare the antihypertensive efficacy and acceptability of three doses of rilmenidine (0.5, 1, and 2 mg once daily) against a placebo.
• To determine the optimal dosage of rilmenidine for treating mild to moderate hypertension.

Main Methods:

• A randomized, double-blind, parallel-group trial involving 60 patients with mild to moderate hypertension.
• Patients received rilmenidine (0.5, 1, or 2 mg) or placebo once daily for four weeks.
• Blood pressure measurements and assessment of adverse events were conducted.

Main Results:

• Significant blood pressure reduction was observed with 1 mg and 2 mg rilmenidine doses.
• The maximum antihypertensive effect was achieved at the 1 mg dose.
• A significant dose-effect relationship was found for supine systolic blood pressure.
• The 1 mg dose showed the best efficacy/acceptability ratio with minimal adverse events.

Conclusions:

• Rilmenidine at 1 mg once daily is an effective and well-tolerated antihypertensive treatment for mild to moderate hypertension.
• The 1 mg dose offers the most favorable balance between efficacy and acceptability.
• Further studies may explore long-term outcomes and broader patient populations.