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Timolol (Timolol Maleate Ophthalmic) - Summary

 
 



BOX WARNING

Exacerbation of Ischemic Heart Disease Following Abrupt Withdrawal

Hypersensitivity to catecholamines has been observed in patients withdrawn from beta-blocker therapy; exacerbation of angina and, in some cases, myocardial infarction have occurred after abrupt discontinuation of such therapy. When discontinuing chronically administered timolol maleate, particularly in patients with ischemic heart disease, the dosage should be gradually reduced over a period of one to two weeks and the patient should be carefully monitored. If angina markedly worsens or acute coronary insufficiency develops, timolol maleate administration should be reinstituted promptly, at least temporarily, and other measures appropriate for the management of unstable angina should be taken. Patients should be warned against interruption or discontinuation of therapy without the physician's advice. Because coronary artery disease is common and may be unrecognized, it may be prudent not to discontinue timolol maleate therapy abruptly even in patients treated only for hypertension.

 

TIMOLOL SUMMARY

TIMOLOL MALEATE
TABLETS, USP
5 mg, 10 mg and 20 mg

Timolol Maleate Ophthalmic Solution is a non-selective beta-adrenergic receptor blocking agent. Its chemical name is (-)-1-(tert-butylamino)-3-[(4-morpholino-1,2,5-thiadiazol-3-yl)oxy]-2-propanol maleate (1:1) (salt). Timolol maleate possesses an asymmetric carbon atom in its structure and is provided as the levo-isomer. The nominal optical rotation of timolol maleate is:        25°
[α]              in 0.1N HCl (C = 5%) = -12.2°.

Timolol Maleate Ophthalmic Solution is indicated in the treatment of elevated intraocular pressure in patients with ocular hypertension or open-angle glaucoma.


See all Timolol indications & dosage >>

NEWS HIGHLIGHTS

Published Studies Related to Timolol (Timolol Ophthalmic)

Effect of timolol on refractive outcomes in eyes with myopic regression after laser in situ keratomileusis: a prospective randomized clinical trial. [2012]
(length 4 to 8) was used for treatment allocation... CONCLUSIONS: Timolol application is effective for the treatment of myopic

Twenty-four-hour intraocular pressure control with latanoprost-timolol-fixed combination versus bimatoprost in patients who switched from timolol. [2011.10]
PURPOSE: To evaluate bimatoprost versus latanoprost and timolol fixed combination (LTFC) over the 24-hour diurnal curve in patients who switched from timolol... CONCLUSIONS: The LTFC and bimatoprost therapies were equally effective in maintaining IOP at lower levels during the 24-hour period in patients who switched from timolol therapy. Adverse events were more frequent with bimatoprost therapy.

Travoprost 0.004%/timolol 0.5%-fixed combination with and without benzalkonium chloride: a prospective, randomized, doubled-masked comparison of safety and efficacy. [2011.09]
PURPOSE: The purpose of this study is to compare the safety and intraocular pressure (IOP)-lowering efficacy of travoprost/timolol in a benzalkonium chloride (BAK)-free fixed combination preserved with polyquaternium-1 (TRA/TIM BAK-free), with travoprost/timolol-fixed combination preserved with BAK (TRA/TIM), in patients with open-angle glaucoma or ocular hypertension... CONCLUSION: Travoprost/timolol BAK-free demonstrated equivalence to travoprost/timolol preserved with BAK in efficacy. No clinically relevant differences in the safety profiles of travoprost/timolol BAK-free and travoprost/timolol preserved with BAK were identified.

Comparative efficacy and safety of the fixed versus unfixed combination of latanoprost and timolol in Chinese patients with open-angle glaucoma or ocular hypertension. [2011.08.19]
BACKGROUND: A noninferiority trial was conducted to evaluate the efficacy of a single evening dose of fixed-combination latanoprost 50 mug/mL and timolol 0.5 mg/mL (Xalacom(R); LTFC), in Chinese patients with primary open-angle glaucoma (POAG) or ocular hypertension (OH) who were insufficiently controlled on beta-blocker monotherapy or beta-blocker-based dual therapy... CONCLUSIONS: A single evening dose of LTFC was at least as effective as the unfixed combination of latanoprost in the PM and timolol in the AM in reducing IOP in Chinese subjects with POAG or OH whose IOP was insufficiently reduced with beta-blocker monotherapy or beta-blocker-based dual therapy. LTFC is an effective and well tolerated once-daily treatment for POAG and OH.

Timolol versus brinzolamide added to travoprost in glaucoma or ocular hypertension. [2011.07]
BACKGROUND: To compare the efficacy and safety of timolol 0.5% versus brinzolamide 1.0% when added to travoprost monotherapy in patients with primary open-angle glaucoma or ocular hypertension... CONCLUSION: Both adjunctive combinations moderately reduced IOP in patients inadequately controlled with travoprost monotherapy, with timolol being slightly stronger 8 hours after instillation. Adjunctive treatment with brinzolamide and travoprost may be an alternative for patients not tolerant or not responsive to treatment with timolol and travoprost.

more studies >>

Clinical Trials Related to Timolol (Timolol Ophthalmic)

Pharmacokinetics, Safety and Tolerability of the Preservative-free Fixed Dose Combination of Tafluprost 0.0015% and Timolol 0.5% Eye Drops [Not yet recruiting]

Travoprost 0.004%/Timolol 0.5% Versus Timolol 0.5% in Chinese Patients With Open-Angle Glaucoma or Ocular Hypertension [Not yet recruiting]
Eligible patients will be randomized in a 1: 1 ratio to receive Travoprost 0. 004% / Timolol, once daily or Timolol 0. 5%, twice-daily, for a total of twelve weeks. The study treatments will be compared for mean intraocular pressure (IOP) change from baseline at Week 12.

Safety parameters measured at 3 study visits are : Ocular signs, visual acuity, dilated fundus, cardiovascular parameters (blood pressure and pulse), and adverse events.

Timolol Option for Ulcerated Hemangiomas (TOUCH Trial) [Recruiting]
The purpose of this study is to determine whether Timolol 0. 5% Gel Forming Solution is safe and effective in promoting wound healing of infantile ulcerated hemangiomas compared with standard conservative management with topical antibiotic.

Efficacy and Safety Study of Combigan and 0.5% Timoptic in Normal Tension Glaucoma [Recruiting]

Topical Timolol for the Treatment of Benign Vascular Periocular Lesions [Recruiting]
The purpose of this research is to find out if the use of topical timolol 0. 5% solution applied twice daily will help to shrink rosacea lesions around the eye.

more trials >>


Page last updated: 2013-02-10

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