Twenty kilograms of Lyrica powder was seized by a customs officer at Kuwait's Air Freights division.
The powder was hidden in a postal parcel which had come from China via express mail, local media reported.
The necessary procedures were taken and the drugs were referred to the authorities.
Lyrica is an anticonvulsant and anxiolytic medication used to treat epilepsy, neuropathic pain, fibromyalgia, restless leg syndrome, and generalised anxiety disorder, may have dependence liability if misused.