what is lastacaft eye drops used for
Uses. This medication is used to prevent itching of the eyes due to allergies. Alcaftadine is an antihistamine. It works by blocking a certain natural substance (histamine) that causes allergic symptoms. Do not use this medication to treat red or irritated eyes due to wearing contact lenses.se eye drops before eye ointments to allow the drops to enter the eye. Use this medication regularly to get the most benefit from it. To help you remember, use it at the same time each day. Do not use this product if it becomes contaminated (for example, drops turn a dark color).