Optometrist prescribed Perservision Areds2. I tend to have dry eye as I have UC/Chrons. And am frequently dehydrated. Stable for years. I am very careful with my diet and after a month of taking these PA2 I was sick!! Nauseated, bloated, chronic burping, couldn’t eat, exhausted, weak & insomnia. I am absolutely pissed as I questioned the doctor about my digestive issues and he said “ no problem” BIG PROBLEM for me! Stopped dosage and feel great. There should be more studies about usage for people with digestive issues.