How long can I be on this??? I'm scared that I'm ruining my body. The reason I went on it is cause i did medical marijuana for pain and it ruined my life. I got blackouts then finally quit. Dr put me on lorazapam and take .5 mg one about 530am then one about 3pm. Please help!!! When in public I get light headed and feel like I'm almost blacking out like I did when I did that horrible stuff but don't... (social anxiety disorder?)