It was last summer that customs seized a package with 25 kilos of the drug-classified preparation pregabalin.
The shipment was sent from Germany.
The Swedish Customs replaced the content that was addressed to a man in Katrineholm.
When the package arrived at the man, he and another man took the package to a store in Katrineholm to send it on to a 30-year-old man in Ängelholm, Skåne.
But the package was too big and never got off.
No one is convicted of smuggling
Instead, the men were arrested and suspected of serious drug smuggling.
When the sentence now falls, several people involved in the plot are sentenced to long prison terms - but no one is convicted of the actual smuggling.
According to the ruling, it is unclear who actually placed the order.
The men from Katrineholm, on the other hand, are sentenced to attempted felony drug offense, as they have handled the 25 kilo package.
One Katrineholm resident is sentenced to one year and eleven months in prison, the other to one year and eight months.
Several years in prison
The other two who are convicted in the ring, the 30-year-old man and a woman from Ängelholm, receive significantly harsher punishment.
This after the police found a large consignment of drugs in the man's home in Ängelholm where the woman lived. The man was sentenced to five years and eleven months in prison.
The woman to four years and eleven months in prison.