Visine will relief the dry eyes, which we trust enough to routinely drip it into our eyes. Howeve original Visine contains 0.05% Tetrahydrozoline hydrochloride. A full 15 milliliter bottle would contain 750 milligrams of the tetrahydrozoline. The MSDS sheets I found on the ‘net indicate a LD50 for mice of around 345 mg/Kg (The Lethal Dose 50% quantity is the amount of chemical which will kill half of the test animals it is administered to).An entire bottle probably wouldn’t kill a typical 50 Kg man, but might very well make him sick.
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