These standard antihistamines are available over-the-counter in the form of oral pills, eye drops, and nasal sprays ... drowsiness can be a side-effect, and they should be used with caution.

Use eye drops before eye ointments to allow the drops ... has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side ...

To apply eye drops, wash hands first ... doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Non-steroidal eye drops are stronger than antihistamines, Liu says. However, since there is a potential for serious side effects including vision changes and cataracts, anti-inflammatory drops ...