Five prisoners at HMP Glenochil were taken to hospital on Christmas Day - after drug misuse at the prison.
35 inmates were identified as being under the influence of drugs.
All prisoners are now safe.
The Scottish Prison Service says attempts to bring drugs into prisons are posing a "significant" threat.
Inmates staged a protest at HMP Glenochil last year.
They were unhappy about the amount of time they're allowed to spend outside their cells.
Deaths on NHS Forth Valley waiting lists
New data shows more than 850 people across the Forth Valley have died while on an NHS waiting list since February 2024.
Drivers with 12 points on licence still on road
15 drivers in the Forth Valley are still on the road - despite having 12 or more points on their license.
Data shows train savings since peak fares scrapped
Commuters heading from the Forth Valley to Glasgow and Edinburgh have saved nearly £600 since peak rail fares were scrapped.
Court appearance after Sauchie death
A 26-year-old man is appearing in court today charged with murder, after the death of a man in Sauchie.
Hospital restrictions lifted
Temporary visiting restrictions at hospitals across the Forth Valley have been lifted.