Sir, My One Of Eye Was Paining And I Saw

Sir, my one of eye was paining and i saw light red rash on white area. When i went to doctor she prescribed me gloeye capsule for 2month. I am wondering its uses as i read online that this medicine is prescribed only for old individuals with age related eye problems. I want to know from it that will it cause any side effect ..i m 26 yrs old.thank you