The main ingredient in such drops is usually tetrahydrozoline.
Chronic use of tetrahydrozoline has been shown to induce clinically important changes to the cornea in up to 27% of users.
#cite_note-2) active ingredient, tetrahydrozoline
, can cause nausea, vomiting, seizures or even a coma, since it is a vasoconstrictor which can result in extremely low or extremely high blood pressure.
Eye drops containing phenylephrine were discontinued in the UK in 2003, but may be accessible over the Internet along with eye drops containing other drugs such as tetrahydrozoline
A common ingredient in eye drops is Tetrahydrozoline
Viral conjunctivitis was diagnosed by her student health services, and over-the-counter tetrahydrozoline
hydrochloride eye drops were prescribed.
The sympathomimetic amines include ephedrine and phenylephrine, and the imidazolines include naphazoline, oxymetazoline, tetrahydrozoline
, and xylometazoline.
A safer nasal decongestant is phenylephrine hydrochloride, tetrahydrozoline
hydrochloride, naphazoline hydrochloride, oxymetazoline hydrochloride, and xlometazoline hydrochloride.