Your Side Effects May IncludeTimolol eye drops side effects
also sold as Timoptic
This side effect is printed on the FDA label for Timolol eye drops. It was a question in our daily quiz, where you pick the real side effect from four choices.
Eye drops that can slow your heart or trigger asthma
The drug is absorbed into the bloodstream. Deaths from asthma attacks and heart problems have been reported.
“As with many topically applied ophthalmic drugs, this drug is absorbed systemically.”
Tell your eye doctor if you have asthma, COPD or heart problems. Report shortness of breath or a slow heartbeat.
434 reports to the FDA's adverse event system mention a slow heartbeat or bronchospasm. A report is not proof the drug caused it. See the query
From quiz No. 18 · October 12, 2026 · Play that quiz →
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Not medical advice. Don't stop or start a medication because of a quiz. Talk to your doctor or pharmacist. Label text and report counts from openFDA. Not affiliated with any drug maker.