James O'Donovan

While eye drops are safe and effective for their intended use in the eyes, many of their active ingredients can have harmful systemic effects when absorbed through the gastrointestinal tract. Ingredients commonly found in eye drops, such as decongestants (e.g., tetrahydrozoline and naphazoline), preservatives (e.g., benzalkonium chloride), and certain other chemicals (e.g., boric acid), are […]