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Benzedrine (racemic benzylmethyl carbinamine) is a volatile substance which has a vasoconstrictory effect, similar to that of ephedrine. The "benzedrine inhaler" (accepted by the Council on Pharmacy and Chemistry of the American Medical Association) can be easily attached to the Dench vaporizer by means of two medicine droppers, as illustrated in the accompanying diagram. Insufflation of benzedrine vapor through a eustachian catheter is especially useful previous to the passage of eustachian bougies. I have also observed that the insufflation of benzedrine vapor relieved tinnitus in several cases of acute nonsuppurative
Benzedrine inhaler attached to the Dench vaporizer.
inflammation of the middle ear. So far, I have not observed any symptoms of labyrinthine irritation following the introduction of this potent drug into the middle ear.