AD1184
Celestial
And he admits to taking Ambien as well, which is also psychoactive. The manufacturer says that Ambien is not to be taken unless you are able to get eight hours of sleep (which Musk implies he is not).I also heard that Elon has been smoking pot whilst making these kinds of bizarre pronouncements (according to a friend of his girlfriend - some popstar) and that it is something new for him (assuming it is true may just be garbage). It may be the equivalent of drunk posting - particularly if he is one of those people who is prone to paranoia on cannabinoids.
Any one of these drugs are bad enough on their own, but in combination who knows what effect they could be having on someone's behaviour. However, Musk has exercised a choice in taking these substances and it does not make him less responsible for his actions, but more responsible.