The PSNI have been conducting an investigation into the unlawful supply and distribution of diazepam tablets into and throughout Northern Ireland.
They are warning that Diazepam is a Class 'C' controlled drug which may only be lawfully possessed on prescription.
Over the past three months, police have seized approximately 65,000 such tablets with help from partner agencies and carried out 29 searches within Northern Ireland and in England.
They have also seized £10,000 cash and are conducting a linked money laundering investigation.
Other drugs seized include small quantities of herbal cannabis, cannabis resin, amphetamine and mephedrone as well as pregabalin which is also a prescription only medicine.
17 people have been arrested: eight were charged and nine are subject to reports being sent to the Public Prosecution Service.
Police are urging the public not to be tempted by reduced prices or fooled by attractive websites offering medicines without prescription.
People have also been reminded that they could be the victim of identity theft or credit card fraud. Illegal possession or supply of diazepam can lead to a criminal conviction.