thoughts on: Blitzed : Drugs in Nazi Germany

So I've always been curious about this book. However, I know this was written by a journalist, and not a historian. I'm not suggesting this makes the book worthless by default. But I'm curious, are there historians on this shbreddit, who either, read the book, or know the book and are familiar with the discourse surrounding its claim.

I'm mainly interested in two things: how convincing is the argument? And should I read it myself. Secondly, if someone knows more academic research into the use of pharmaceuticals among the Nazi elite, or in general. I've heard about amphetamines being used in army campaigns, but have never seen more elaborate stuff about it.

So, drug use for Hitler primarily, Nazi elites in general, and the army maybe. Would somebody like to point me in the direction for some proper academic studies. And is Ohler his book a goor starting point, or to flashy best seller list kinda writing, for a history student to find it meaningful

Thanks in advance!