At the same time, just one in eight male prisoners were on methadone.
Over half of female prisoners are on methadone, which is normally used to treat an addiction to heroin.
There were 104 on the drug at the end of last year - out of 189 women in jail at the time.
According to freedom of information figures, only one in eight male prisoners were on methadone at the time.
Former governor of Mountjoy and Portlaoise Prisons, John Lonergan, is not surprised by the figures relating to women:
Pipe Bombs, Cocaine, Cannabis, And Cash Seized In Ballinasloe
Gardaí made the discoveries in two searches over the course of yesterday.
Simplifying Refurbishment Grants A Priority For General Election Candidate
Laura O'Neill is running for a seat in Longford-Westmeath.
SIPTU Bord Na Móna Workers Say Recycling Company Is Up For Sale
The union have been raising concerns for months.
Laois Boy's Fundraiser Reaches More Than Double Its Target
He will be walking in aid of Irish Dogs for the Disabled.
Nikita Hand Faced Brutal Cross-Examination In Civil Case - Laois Law Professor
The 35-year-old won her case against Conor McGregor.
Laois Candidate Defends Taoiseach Following Exchange With Carer
He is describing Simon Harris as "approachable".
Westmeath Athletics Club To Publish Book to Mark 50th Anniversary
Mullingar Harriers's book will be published next September.
Westmeath Households Expected To Have Water Supply Restored Today
Alternative water supplies were deployed to homes following Storm Bert.
Government Must Recognise Carers - Sorca Clarke
Sinn Fein wants to see the carer's allowance means test abolished.
Public Consultations On Westmeath Wind Farm Project Begin This Week
Coole Hall will play host to a meeting on Wednesday.
A Further 2,500 Westmeath Premises Can Connect To High Speed Broadband
Over 11,000 premises can now pre order fibre broadband.
Westmeath Business Attends Leading Business Tourism Conference
Glasson Lakehouse is attending as a Meet in Ireland partner.
Portartlington Connector Bus Line To Be Discontinued
The service will end from November 30th.
Midlands Parents Concerned Over A Lack Of Therapists In Special Schools
Some examples include psychologists and physio therapists.
28% Of People In The Dublin Midlands Region Have A Medical Card
There are over 1m people in the region.
Comedy Gig Want To Show How Menopause Can Be Fun
It's coming to Westmeath tonight.
Midlands Likely To Escape Worst Of Storm Bert's Rain
A red alert has been issued for Galway and Cork.
Peter Burke Points Finger At Finance Minister Over VAT Rate Saga
The Fine Gael Minister is running for re-election in Longford-Westmeath.
Laois Teen Found Safe And Well
He has been reported missing since last Tuesday.
Westmeath Councillors To Take Department of Integration to High Court
They're looking to stop the development of a Asylum Seeker Accommodation project in Athlone.
