Benzydamine
Benzydamine (also known as Tantum Verde or Difflam), available as the hydrochloride salt, is a locally-acting nonsteroidal anti-inflammatory drug (NSAID) with local anaesthetic and analgesic properties. It is used topically for pain relief and anti-inflammatory treatment of the mouth, throat, or muscoskeletal system.  Although the indazole analogue benzydamine is a non-steroidal anti-inflammatory drug (NSAID), it has various physicochemical properties and pharmacologic activities that are different from those of traditional aspirin-like NSAIDs but facilitate benzydamine's mechanism of action as an effective locally-acting NSAID with local anaesthetic and analgesic properties. Moreover, unlike aspirin-like NSAIDs which are acids or metabolised to acids, benzydamine is in fact a weak base.