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Levobunolol is the pure L-enantiomer of bunolol and has more than 60 times the pharmacological activity of D-bunolol. [3] It is used as the hydrochloride , which melts at 209 to 211 °C (408 to 412 °F) and is soluble in water and methanol and slightly soluble in ethanol .
Betaxolol is most commonly ingested orally alone or with other medications for the management of essential hypertension. [4] It is a cardioselective beta blocker, targeting beta-1 adrenergic receptors found in the cardiac muscle.
Concomitant administration of bambuterol with corticosteroids, diuretics, and xanthine derivatives (such as theophylline) increases the risk of hypokalemia (decreased levels of potassium in the blood).
Bevantolol was a drug candidate for angina and hypertension that acted as both a beta blocker and a calcium channel blocker. [1] [2] It was discovered and developed by Warner-Lambert [3] but in January 1989 the company announced that it had withdrawn the New Drug Application; the company's chairman said: "Who needs the 30th beta blocker?"
[20] [21] Intravenously, α to β blockade ratio is 1:7. [19] [16] Thus, the labetalol can be thought to be a beta blocker with some α-blocking effects. [16] [18] [22] By comparison, labetalol is a weaker β-adrenergic receptor blocker than propranolol, and has a weaker affinity for α-adrenergic receptors compared to phentolamine. [19] [18]
It is marketed as a 0.25 or 0.5% ophthalmic solution of levobetaxolol hydrochloride under the trade name Betaxon. Levobetaxolol is a beta-adrenergic receptor inhibitor ( beta blocker ). Indications
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Guanfacine, sold under the brand name Tenex (immediate-release) and Intuniv (extended-release) among others, is an oral alpha-2a agonist medication used to treat attention deficit hyperactivity disorder (ADHD) and high blood pressure.