Tetrahydrozoline is utilized to relieve minor eye irritations brought on by colds, pollen, and the like. It is derived from imidazoline, which can be found in over-the-counter eye drops as well as nasal sprays. Poisoning can occur if tetrahydrozoline is swallowed.
- Main ingredient in Visine.
- Side effects include stinging, redness or burning.
- Tetrahydrozoline poisoning symptoms include difficulty breathing, blurred vision, nausea and vomiting.