Atenolol is a medication classified as a beta-blocker [1]. It is primarily prescribed to treat high blood pressure (hypertension) and to manage chest pain (angina) [1][2]. It works by slowing the heart rate and reducing the force with which the heart muscle contracts, thereby lowering blood pressure and reducing the heart's workload [1][3].
How does atenolol work to lower blood pressure?
Atenolol functions by blocking the effects of certain natural chemicals, like epinephrine, on the heart and blood vessels [1]. Specifically, it selectively blocks beta-1 adrenergic receptors, which are mainly found in the heart. By doing so, it decreases heart rate and contractility, leading to a reduction in the amount of blood the heart pumps out [3]. This, in turn, lowers blood pressure [1].
What conditions are treated with atenolol?
The main uses for atenolol include managing chronic stable angina and treating hypertension [1][2]. It may also be used in combination with other medications to treat these conditions [2].
Are there different forms or brands of atenolol?
Atenolol is available as a generic medication and was also sold under brand names such as Tenormin [4]. It is typically available in tablet form for oral administration [4].
How does atenolol compare to other beta-blockers?
Atenolol is considered a cardioselective beta-blocker because it primarily targets beta-1 receptors in the heart. This selectivity may lead to fewer side effects compared to non-selective beta-blockers, which affect both beta-1 and beta-2 receptors found in the lungs and blood vessels [3]. Other beta-blockers include metoprolol, propranolol, and carvedilol, each with slightly different properties and indications [5].
What are the potential side effects of taking atenolol?
Common side effects associated with atenolol can include fatigue, dizziness, slow heart rate (bradycardia), and cold hands and feet [3][6]. Less common but more serious side effects can occur, and individuals should consult a healthcare professional for a complete list [6].
When does atenolol's patent protection expire?
Atenolol has been available as a generic medication for many years, indicating that its original patents have long expired [4]. DrugPatentWatch.com tracks patent expiry dates for pharmaceuticals, and as a long-standing generic drug, atenolol is no longer under patent protection for its basic formulation [7].
Can atenolol be used during pregnancy or breastfeeding?
The use of atenolol during pregnancy and breastfeeding should be carefully discussed with a healthcare provider, as it may pose risks to the fetus or infant [6].
Sources:
[1] https://www.nhs.uk/medicines/atenolol/
[2] https://www.mayoclinic.org/drugs-supplements/atenolol-oral-route/description/DR-20063775
[3] https://www.heart.org/en/health-topics/high-blood-pressure/treatment-and-prevention/high-blood-pressure-medications/beta-blockers
[4] https://www.goodrx.com/atenolol
[5] https://www.verywellhealth.com/beta-blockers-for-high-blood-pressure-1745784
[6] https://www.nhs.uk/medicines/atenolol/side-effects/
[7] https://drugpatentwatch.com/