Elon Musk defended his prescription for ketamine, saying his usage of the drug helps him alleviate a "negative chemical mind state" that benefits investors in Tesla, the electric car maker he leads as ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Mark Cuban is embroiled in another spat with Elon Musk which has seen ...

Tesla CEO seeks to reassure investors, saying he takes prescribed drug to treat his "negative frame of mind", following media reports that his use of dissociative anesthetic was spooking investors.