Hitlers Drug use

I think that came in to play towards the end of Hitlers time, and was not a issue during the period this movie was set in.

Why would it?

Hitler's drug use started quite some time after Theodor Morell became his doctor in the mid 1930s, really around 1942-ish. Hitler was a hypochondriac and drawn in by Morell's success in curing some of his ailments early on in their relationship. Morell was a useless doctor, and in many ways convinced Hitler he needed him by prescribing ever more drugs to him; many required of course in attempts to treat illnesses caused by drugs Morell was prescribing already (almost 50 by the time of his death). Hitler was actualy healthy physically and of reasonably sound mind (albeit mega evil of course), but he withdrew and generally became progressively psychotic from 1943 onwards. Blame the combo of barbiturates to bring him down/to sleep, Pervatin aka meth and cocaine eye drops to keep him awake and general stresses of the declining war situation - his clinical psychosis was certainly drug agitated in my view. Many believe he would have been dead by late 1945/early 1946 as his health was in decline by the last days of the war.