Question

The active ingredient in eye drops such as Visine is tetrahydrozoline HCI. Ingesting this substance can lead to a variety of harmful side effects such as dramatically lowering body temperature, causing severe breathing difficulty, respiratory failure, blurred vision, nausea, vomiting, blood pressure fluctuation, tremors, seizures and even coma. How long does it take for visine to make you sick?

More related question:
How much visine is lethal?

Answer 1

You should study the instruction and see how much and for how long you can apply visine. In any case, your ophthalmologist should have made the directions on proper usage. If you have any side effects or appear to be allergic to this medication, stop using it and see the doctor.