> Is Tetrahydrozoline HCL an analog of Epinephrine or just another
> vasoconstrictor?
I'm not sure how those two categories differ. Tetrahydrozoline, naphzoline,
phenylephrine, oxymetazoline and epinephrine all act on the same receptor
sites.
> Is it true that Long-term use of Tetrahydrozoline products is not
> recommended?
It's true that most doctors discourage it, but I'm not sure why. I've never
seen any consequences but I'm sure someone will speak up THZ doesn't
rebound significantly. Oxymetazoline rebounds dramatically.
> Am I risking scleral atrophy or chronic capillary spasm?
Dry eye symptoms are the only side effect I've observed.
-MT