Dexamyl (or Drinamyl in the UK) was the brand name of a combination drug composed of amobarbital (previously called amylbarbitone) and dextroamphetamine (Dexedrine) within the same pill.

Racemic amphetamine had already been marketed over-the-counter (OTC) since 1933 as a nasal decongestant inhaler device sold under the brand name Benzedrine, and also as an oral tablet since 1938.

Dexamyl is the recreational drug of choice for the main character of the film Quadrophenia, who eventually suffers from amphetamine psychosis.

[4] Henry Grahn, a general practitioner from Philadelphia who also conducted a study on the usage and effects of Dexamyl among his patients would pronounce the effectiveness of the drug with the quote “This is a Dexamyl age, an age of unrest; probably no other period in history has been dominated by a mood of uncertainty and disquiet.” The famous patient of Freuds, Sergei Pankejeff (also known as the Wolf-man) was supplied with these by Muriel Gardiner from the United States which he, himself, felt was the only method for treating his depressive episodes.

[7] Dr. George C. Nichopoulos was indicted in May 1980 for having improperly prescribed Dexamyl and phenmetrazine (Preludin) to the singer Jerry Lee Lewis, despite knowing he was addicted to them.