Is Trump on crappy prescription stimulants, like Hitler?

Gawker's Ashley Feinberg reports on rumors that Donald Trump, presumptive Republican candidate for U.S. President, is on "cheap speed."

...according to a source with knowledge of Trump's current prescriptions, that letter isn't telling the whole story. Most notably: Donald Trump is allegedly still taking speed-like diet pills.

Rumors of Trump's predilection for stimulants first started really popping up in 1992, when Spy magazine wrote, "Have you ever wondered why Donald Trump has acted so erratically at times, full of manic energy, paranoid, garrulous? Well, he was a patient of Dr. [Joseph] Greenberg's from 1982 to 1985." At the time, Dr. Greenberg was notorious for allegedly doling out prescription stimulants to anyone who could pay.

Previously: Hitler was injected with all sorts of crazy drugs