Q. I have taken several prescribed antidepressants over the years, but was not on any when I was offered a cup of St. John’s wort tea. It elevated my mood surprisingly well. I began drinking the tea intermittently and eventually added St. John’s wort tablets to my daily supplement regimen.
Within six months, I began to develop increasingly severe eye problems–hypersensitivity to light, blurriness, tearing and extreme dryness at night. The problems became worse and worse. I didn’t make the connection to St. John’s wort.
After searching the web, I found data linking St. John’s wort to vision damage. I stopped taking the supplement immediately.
To my relief, my eyes are slowly recovering. I want to warn others about this dangerous side effect of St. John’s wort.
A. One of the active ingredients in St. John’s wort (Hypericum perforatum) is hypericin. This compound can damage both the lens and retina when the eye is exposed to light (Photochemistry and Photobiology, Nov-Dec, 2012). Even wearing sunglasses is not necessarily protective. Thanks for the reminder of this side effect.