President Trump must contend with the wrath of a wealthy ex-ally who may seek to undermine him politically. Mr. Trump has threatened to cut off Elon Musk’s billions in government contracts.

The Whole Mars Catalog replied: “ nothing wrong with being a little horsey every once in a while .” Ketamine is often used as a veterinary anesthetic, especially for horses. Aside from ketamine, the report from the New York Times claimed Musk has been using Ecstasy, psychedelic mushrooms, and the prescription medication Adderall.

The New York Times defended its reporting on Elon Musk ‘s drug use, after he claimed that the publication was “lying” in its article that claimed he was, among other things, “taking so much ketamine, a powerful anesthetic, that it was affecting his bladder, a known effect of chronic use. He took Ecstasy and psychedelic mushrooms.”

The falling-out between Elon Musk and President Trump went into overdrive on Thursday. Both men have powerful ways to keep it going.

As Mr. Musk entered President Trump’s orbit, his private life grew increasingly tumultuous and his drug use was more intense than previously known.