Twenty-two hours later, hopped up on Dexedrine pills, Van Ronk reached the Gate of Horn.
I reached down to my suitcase and from where I'd been going to get a miltown I took a Dexedrine and popped it in my mouth.
1942, trademark (Smith, Kline and French Laboratories) for dexamphetamine sulphate, probably from dextro- + chemical ending from Benzedrine, etc.
Dexedrine Dex·e·drine (děk'sĭ-drĭn, -drēn')
A trademark used for dextroamphetamine.