REVIEW Like propranolol and nadolol, timolol competes with adrenergic neurotransmitters such as catecholamines for binding at beta(1)-adrenergic receptors in the heart and vascular smooth muscle and beta(2)-receptors in the bronchial and vascular smooth muscle. Beta(1)-receptor blockade results in a decrease in resting and exercise heart rate and cardiac output, a decrease in both systolic and diastolic blood pressure, and, possibly, a reduction in reflex orthostatic hypotension. Beta(2)-blockade results in an increase in peripheral vascular resistance. The exact mechanism whereby timolol reduces ocular pressure is still not known. The most likely action is by decreasing the secretion of aqueous humor.
These chemical products are for research and development use only. They are not for diagnostic, therapeutic, cosmetic, or human and animal uses. They are not sold to individuals. Additional restrictions may apply.
New customers undergo an internal onboarding process. As part of this process, new customers may be asked for more information. CATEGORIES APIs and Bioactives > Beta Blockers