Related Experiment Video
Updated: Sep 21, 2026

Disrupting Reconsolidation of Fear Memory in Humans by a Noradrenergic β-Blocker
Published on: December 18, 2014
The effects of propranolol on cognitive function and quality of life: a randomized trial among patients with
E J Pérez-Stable1, R Halliday, P S Gardiner
1Department of Medicine, University of California, San Francisco, USA.
Insights
Propranolol treatment for diastolic hypertension showed minimal cognitive effects and no impact on mood or sexual function. These findings suggest other factors should guide beta-blocker selection for hypertension management.
Area of Science:
- Cardiology
- Pharmacology
- Neuroscience
Background:
- Diastolic hypertension is a common cardiovascular condition.
- Beta-blockers, such as propranolol, are frequently prescribed for hypertension.
- Concerns exist regarding potential adverse effects of beta-blockers on cognitive, depressive, and sexual functions.
Purpose of the Study:
- To evaluate the impact of propranolol on cognitive function, depressive symptoms, and sexual function in patients with diastolic hypertension.
- To compare propranolol's effects against a placebo in a controlled trial setting.
Main Methods:
- A placebo-controlled trial involving 312 adult patients with diastolic hypertension.
- Random assignment to propranolol (80-400 mg/day) or placebo.
- Cognitive function assessed using 13 tests at baseline, 3, and 12 months.
- Depressive symptoms and sexual function evaluated via questionnaires at baseline and 12 months.
Main Results:
- No significant differences in 11 of 13 cognitive tests between propranolol and placebo groups at 3 or 12 months.
- Slight, potentially clinically insignificant, differences in reaction time and errors of commission observed at 3 months.
- No significant differences in depressive symptoms or sexual function and desire at 12 months.
Conclusions:
- Propranolol treatment for hypertension demonstrated limited adverse effects on cognitive function, with questionable clinical relevance.
- No adverse effects on depressive symptoms or sexual function were documented.
- The choice of beta-blockers for hypertension management should prioritize factors beyond these specific functional outcomes.
Purpose:
We sought to determine whether propranolol has adverse effects on cognitive function, depressive symptoms, and sexual function in patients treated for diastolic hypertension.
Subjects And Methods:
We performed a placebo-controlled trial among 312 men and women, 22 to 59 years of age, who had untreated diastolic hypertension (90 to 104 mm Hg). Patients were randomly assigned to treatment with propranolol (80 to 400 mg/day) or matching placebo tablets. Thirteen tests of cognitive function were assessed at baseline, 3 months, and 12 months. Five tests measured reaction time to, or accuracy in, interpreting visual stimuli; one test measured the ability to acquire, reproduce, and change a set of arbitrary stimulus-response sets; and seven tests measured memory or learning verbal information. Depressive symptoms and sexual function were assessed by questionnaires at baseline and 12 months.
Results:
There were no significant differences by treatment assignment for 11 of the 13 tests of cognitive function at either 3 or 12 months of follow-up. Compared with placebo, participants treated with propranolol had slightly fewer correct responses at 3 months (33 +/- 3 [mean +/- SD] versus 34 +/- 2, P = 0.02) and slightly more errors of commission at 3 months (4 +/-5 versus 3 +/- 3, P = 0.04) and at 12 months (4 +/- 4 versus 3 +/- 3, P = 0.05). At 12 months, depressive symptoms and sexual function and desire did not differ by treatment assignment.
Conclusions:
Treatment of hypertension with propranolol had limited adverse effects on tests of cognitive function that were of questionable clinical relevance, and there were no documented adverse effects on depressive symptoms or sexual function. Selection of beta-blockers for treatment of hypertension should be based on other factors.
Related Concept Videos
Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers
Adrenergic Antagonists: ɑ and β-Receptor Blockers
Antihypertensive Drugs: Types of β-Blockers
Heart Failure Drugs: β-Blockers
Antianginal Drugs: Nitrates and β-Blockers
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow. Administered...
Hypertension III: Clinical Manifestations and Diagnostic Studies