Neothetazone

Methaniazide/thioacetazone
Combination of
Methaniazide	Antibiotic
Thiacetazone	Antibiotic
Legal status
Legal status	In general: ℞ (Prescription only)

Methaniazide/thioacetazone, sold under the brand name Neothetazone, is an antibiotic combination of methaniazide (neotizide) and thioacetazone that is or was very commonly used in the treatment of tuberculosis. It has been implicated as a cause of gigantomastia in a single 1970 case report, and, along with D-penicilliamine, bucillamine, ciclosporin, and indinavir, is one of the only drugs to have been associated with gigantomastia.