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Timolol

Last updated on 07/07/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions   |   Tips   |   Where To Buy  

GENERIC NAME: Timolol

CHINESE NAME: 第莫洛

BRAND NAME(S) IN HONG KONG: Timabak, Timoptol

DRUG CLASS: Anti-glaucoma agents

SUB CLASS: Beta-blockers

USED FOR: Glaucoma, Ocular hypertension

AVAILABLE DOSAGE FORMS:
– 0.5% (eye drops)

What is Timolol for?

Timolol belongs to a class of medications called beta blockers. It can decrease formation of aqueous humor in eyes to lower intraocular pressure. Therefore, it is indicated for the 1st line treatment of glaucoma and ocular hypertension.

How to use it?

Timolol is applied to the eyes. Instill 1 drop in affected eye(s) once daily in the morning. 

Lie down or tilt your head back. With your index finger, pull down the lower lid of your eye. Hold the dropper close to your eye with the other hand, and drop 1 drop into your eyes between your lower lid and eyeball. Gently close your eyes. Place your index finger over the inner corner of your eye for 1 minute.

What are the side effects of Timolol?

The common side effects of Timolol include burning and stinging upon instillation, blurred vision, conjunctivitis, or headache.

Who should not take Timolol?

– People who are allergic to Timolol or any component of the formulation
– Patients with severe chronic obstructive pulmonary disease (COPD), or active/history of bronchial asthma
– Patients with sinus bradycardia, second- or third-degree heart block, heart failure, cardiogenic shock

Pharmacist Tips:

– Wash your hands with soap and water before and after using.
– Shake the eye drops well just before each use.
– Remove contact lenses prior to administration, and wait 15 minutes before reinserting.
– Separate administration of other ophthalmic agents by at least 10 minutes.
– Avoid driving or other activities requiring clear vision until drug effects are realized.

Common dosing schedule:
Timolol eye drops should be instilled one drop in the morning. 

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Timolol may interact with:
– Clonidine
– Fluoxetine
– Paroxetine
– Digoxin
– Calcium channel blockers, e.g. Verapamil, Diltiazem
– Beta-blockers, e.g. Metoprolol, Propranolol

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Timolol in Hong Kong?

In Hong Kong, Timolol is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk

Need more information?

For detailed information about the use of Timolol in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.