How much did meth use affect the German performance in WWII?

by nrcallender

I've seen articles saying that millions of pills of what was (essentially) crystal meth were given to front line soldiers. How true is this and is their any analysis on the effect that it had on the German war effort?

TheWellSpokenMan

I've never heard anything except rumour and misinformation regarding this. Do you mind sharing the articles where you came across it?