Thebacon (INN;[2] pronounced /ðə'beɪkən/), or dihydrocodeinone enol acetate, is a semisynthetic opioid that is similar to hydrocodone and is most commonly synthesised from thebaine.

Thebacon is an opioid agonist narcotic analgesic of the middle range and a strong antitussive, primarily used in Europe, although it is no longer in common use.

For both pain and coughing, thebacon can be made more effective along with NSAIDs, muscle relaxants, and/or antihistamines like tripelennamine, hydroxyzine, promethazine, phenyltoloxamine and chlorpheniramine.

Thebacon's analgesic and antitussive potency is slightly higher than that of its parent compound hydrocodone, which gives it approximately eight times the milligram strength of codeine.

[4] Although modification of thebaine is the most common way of making thebacon, preparation by refluxing hydrocodone with acetic anhydride is not uncommon, generally similar to how diacetylmorphine is produced.