Timolol: Uses, Side Effects, and How to Take It
Timolol is a beta blocker available as eye drops, eye gel, and oral medicine. The eye products are used to lower eye pressure in people with glaucoma or ocular hypertension, while oral timolol is prescribed for conditions such as high blood pressure, angina, and migraine prevention. Your doctor will determine the appropriate form and dose for your treatment.
Timolol can help lower eye pressure or manage certain cardiovascular and migraine conditions. Take it exactly as prescribed, and ask a doctor or pharmacist before starting, stopping, or combining it with other medicines.
Key facts at a glance
- ATC
- S01ED01
- Generic
- Timolol
- Class
- beta-blocker
- Brands
- Timoptic
- Availability
- rx
- Pregnancy
- C
- Lactation
- caution
- Half-life (h)
- 4
- Onset (min)
- 30
- Duration (h)
- 12
- Routes
- ophthalmic, oral
- Forms
- eye-drops, tablet
- Regions
- CN, US, EU, JP
- Monitoring
- intraocular-pressure, heart-rate
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Dosage and administration
- Usual dose
- 500mg twice daily
- Maximum
- consult physician
- Frequency
- every 12 hours
- Instructions
- Follow physician instructions
- Duration limits
- as prescribed
- Monitoring
- standard
- Usual dose
- 250mg twice daily
- Maximum
- consult physician
- Frequency
- every 12 hours
- Instructions
- Follow physician instructions
- Duration limits
- as prescribed
- Monitoring
- standard
- Usual dose
- 400mg daily
- Maximum
- consult physician
- Frequency
- once daily
- Instructions
- Follow physician instructions
- Duration limits
- as prescribed
- Monitoring
- standard
Overdose information
Special Populations
7 groupspregnancy
first trimesteruse lowest effective dose
avoid unless benefits outweigh risks
regular fetal monitoring
Use with caution and monitor for adverse effects.
pregnancy
third trimesteruse lowest effective dose
avoid close to delivery due to risk of neonatal bradycardia and hypotension
monitor neonatal heart rate and blood pressure after birth
Use with caution and monitor for adverse effects.
lactation
breastfeedingmonitor infant closely
use with caution; consider infant heart rate monitoring
monitor infant for signs of beta-blockade including bradycardia and hypotension
Use with caution and monitor for adverse effects.
geriatric
elderlyno specific dose adjustment for ophthalmic formulation
use with caution due to increased sensitivity to systemic effects
monitor blood pressure and heart rate
Use with caution and monitor for adverse effects.
pediatric_age
childrennot recommended in pediatric patients
limited safety and efficacy data; use only if clearly needed
monitor heart rate and blood pressure
Use with caution and monitor for adverse effects.
renal_impairment
severedose adjustment may be required for systemic formulations
use with caution; monitor renal function
monitor renal function and systemic blood pressure
Use with caution and monitor for adverse effects.
hepatic_impairment
moderateuse with caution; dose adjustment may be needed
use with caution; monitor liver function
monitor hepatic function and systemic blood pressure
Use with caution and monitor for adverse effects.
Statistics and clinical data
Commonly prescribed since
General prescribing information for glaucoma treatment
Drug class
Pharmacological classification
Common uses
Primary therapeutic indications
Mechanism of action
Primary pharmacological action
Contraindications
Conditions and patient states where this medication should be avoided or used with caution.
Do not use (1)
Known allergy to this medication or its components
Use caution (1)
Consult healthcare provider for benefits vs risks assessment
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 22, 2026. · Read our editorial policy