Officers acting under warrant searched a house in Tantallon Drive, Coatbridge at around 2.40pm on Monday.
The tablets have an estimated street value of £2,000.
A 19-year-old man has been arrested in connection with the recovery.
Police Scotland say there is nothing to suggest that the seizure has any links to the investigation into the death of Regane Lenaghan MacColl.
The 17-year-old, from Clydebank, died in the early hours of Sunday after becoming ill while inside the Arches nightclub in Glasgow.