The pill is commonly known as ecstasy.
The strongest MDMA tablet ever found in Ireland was discovered at Electric Picnic this year.
The potentially lethal dose of the drug was volunteered to the HSE at the Stradbally festival as part of it's free and confidential 'back of house' drug checking initiative.
The pill, commonly known as ecstasy, contained 312 grams of MDMA - up to three times the normal dose.
The HSE says its drug checking programme found 39% of all pills tested at festivals last year were greater than 200 grams in strength compared to 19% in 2023.
HSE clinical lead of addiction services, Prof Eamon Keenan, says it's very worrying:
Midlands Gardaí Appeal For Witnesses To Fatal Crash
Midlands Security & Defence Analyst Says Hoax Bomb Threats Aimed To Intimidate
Almost €446,000 Allocated To Midlands Community Centres And Clubhouses
Midlands Family Takes On Ireland’s Fittest Family Challenge
5K Fundraiser To Support Motor Neurone Disease Association Takes Place In Westmeath
No Slowing Down With Age As Westmeath Bowlers Shine At 14th Annual National Bowls Competition
Woman Appears In Court Over €280k Cannabis Seizure In Midlands