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Beta blockers vary in their lipophilicity (fat solubility) and in turn in their ability to cross the blood–brain barrier and exert effects in the central nervous system. [76] Beta blockers with greater blood–brain barrier permeability can have both neuropsychiatric therapeutic benefits and side effects, as well as adverse cognitive effects ...
Common side effects include nausea, abdominal pain, and constipation. [2] It may worsen the symptoms of asthma. [2] Propranolol may cause harmful effects for the baby if taken during pregnancy; [7] however, its use during breastfeeding is generally considered to be safe. [8] It is a non-selective beta blocker which works by blocking β ...
The classification of drugs have been around since 1964 after Sir James Black discovered how they can assist people with heart disease.
Bisoprolol, sold under the brand name Zebeta among others, is a beta blocker which is selective for the beta-1 receptor [7] and used for cardiovascular diseases, [7] including tachyarrhythmias, high blood pressure, angina, and heart failure. [7] [8] It is taken by mouth. [7]
Atenolol is a beta blocker medication primarily used to treat high blood pressure and heart-associated chest pain. [7] Although used to treat high blood pressure, it does not seem to improve mortality in those with the condition. [8] [9] Other uses include the prevention of migraines and treatment of certain irregular heart beats.
[11] [28] Compared to placebo, beta-blockers have a greater benefit in stroke reduction, but no difference on coronary heart disease or all-cause mortality. [32] However, three-quarters of active beta-blocker treatments in the randomised controlled trials included in the review used atenolol, and none used the newer vasodilating beta-blockers. [33]
While some studies suggest that there are minimal differences in side effects between asthma patients and non-asthma patients, beta 1 blockers are generally avoided in patients with asthma or chronic obstructive pulmonary disease due to their potential to block beta 2 receptors, particularly at high doses.
Levobunolol is a non-cardioselective beta blocker, that is, it blocks beta-1 receptors as well as beta-2 receptors. The latter type dominates in the ciliary body, where it controls aqueous humour production. Blocking this type of receptor reduces aqueous humour production, lowering intraocular pressure.