Morphine tablets which could be dangerous if taken were among items stolen during a break-in in Kettering during the early hours of Saturday (June 27).
The burglary happened at a home in Linden Avenue.
Thieves broke into the property via an open window and searched the ground floor and the car outside.
A sum of cash was staken as well as a box of prescription morphine tablets called Zomorph.
Witnesses, or anyone with information, should phone Northamptonshire Police on 101.
Alternatively, phone the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.