Wife thinks the Focalin I'm prescribed is "speed"

My wife has been frustrated with me lately and it turns out my psych said the Focalin I'm on is "speed".  Since she grew up with the worst of the worst drugs which both her mother and father abused their entire life, she thinks she's going through it again.  If I don't take my med I told her I'd likely loose my job since I've already been warned at work.  Anybody know the best way to approach this?  It is highly emotional for her, so I reassured her, but she said she'd never be convinced it isn't speed.  

Thanks for any positive contributions you may have!