It vwas lasix at the German Grand Prix, he borrowed what he thought werre 5mg tabs from another competitor and they turned out to be 20mgs
He said anywhere other than Germany where the medical treatment is top notch he would likley have died.
Lasix is strange. One friend took a Lasix and lost 18lbs overnight. My little brother when he was a little kid swallowed a 20mg Lasix and nothing happened. I don't remember what the circumstances were, why he took it, but I was angry LOL. Now at the hospital I was given several IV shots of Lasix, one was 80mg and nothing happened as far as weight though my potassium went low and I had to drink this disgusting potassium solution that burned my mouth.
A few pros did experiment with insulin in the 80s, I think Mike Christian mentioned ODing once because didn't know how much to take, would take a mL or whatever.
I don't remember the stats for sure, but I think suicide attempts involving insulin are only successful once in several hundred and usually thee people have taken whole vials. A friend took a whole vial and survived without any medical intervention. So the death risk is extremely exaggerated, especially when involving bb dosages such as 10-20iu. Basically won't happen.