Crack cocaine, mobile phones and plastic packaging were found during a police raid in Mansfield.
Officers acting on intelligence forced entry to a property in Broomhill Lane, shortly after 2pm on Wednesday.
A 48-year-old woman was arrested on suspicion of possessing Class A drugs with intent to supply and remains in police custody.
Inspector Kylie Davies, district commander for Mansfield, said: “This was an intelligence led raid several weeks in the planning.
“Drug-related crime is a blight on our communities that causes immense damage to the lives of often vulnerable users.
“That’s why we will continue to carry out this kind of proactive enforcement in the future.”