some of the side effects mentioned are inability to focus, blurred vision, brain fog... I work 10 hours a day so I need to know. Also, if it does not happen on day 1 of taking the medication, may it happen on day 2 or 3 or further down the road? The other possible side effects such as bone density loss and hair loss... does anyone have the percentages of occurrence? I haven't started any treatment yet... so far only surgery has been discussed but I would like to check this out first. Thank you so much.