Watery eyes

It is called watery eyes (epiphora), if too many tears are produced or they can't drain away properly. It's common in young babies and older people, it can cause blurred vision, sore eyelids and sticky eyes.

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Causes of watery eyes - Mayoclinic

Active ingredient

The chemically active part of a drug, medicine or pesticide that makes it work.
Do you know what the active ingredient in aspirin is?