Taking to their respective social media platforms, Trump threatened to cut Musk’s government contracts, while Musk said Trump would not have won in November without him.

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 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.

A bitter online feud kicked off between the once-close allies on Thursday. Here are some of their pointed exchanges that played out throughout the day.

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