Timolol
Brand: Betimol, Timoptic (discontinued)
No boxed warning on the current FDA label.
- Caution
- Eye drops are absorbed systemically: contraindicated in asthma, severe COPD, bradycardia, and heart block.
Common side effects
- Eye stinging
- Blurred vision
- Slow heartbeat
- Bronchospasm
Key interactions
- Additive slowing with oral beta blockers
- Caution with verapamil or diltiazem
Counseling points
- Can be absorbed systemically: avoid in asthma or COPD
- Press on the inner corner of the eye for a minute to reduce absorption
- Separate other drops by 5 minutes
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