Cocaine, cannabis and ecstasy were seized by Gardaí after the search of a house in Cavan town at the weekend.
Local Gardaí and members of the Divisional Drugs Unit carried out the operation on Saturday.
A man in his late-20s was arrested and later charged with drug offences.
Separately, investigations continue after €300,000 worth of cannabis and cocaine were discovered in Louth.
The discovery was made in follow up searches after Gardaí in Bailieborough stopped a car that had turned at a checkpoint on Saturday.
Two men were arrested and follow-up searches in Drogheda and Knockbridge lead to the discovery of the drugs.