Hi everyone! I would just like to reply to why depo effects some more than others. I started getting dizzy spells and nausea about 3 months ago after only 2 rounds of depo... I even blacked out one day and went tothe emergency room. they diagnosed me with a headache and sent me home. I have trouble focusing my eyes on objects and my vision looks like i'm in a bubble 90 percent of the time. I just recently went to the eye doctor to see if my contact prescription was correct, of course it was... so i left it up to myself to find out the answers. I believe that the depo is completely to blame for my dizziness, nausea and blurred vision.