The drug testing team say these high strength products are a cause for concern.
The HSE is currently analysing MDMA powders and crystals onsite at Electric Picnic.
The drug testing team say these high strength products are a cause for concern, and it's safer not to use them.
3-CMC, a potent stimulant-type drug with large white crystals, was detected in its lab onsite at the festival in Stradbally.
It's warning people the substance can produce strong stimulant effects which can make people feel unwell.
The HSE lab is a first for a festival-setting in Ireland, with drugs being analysed onsite to provide real-time information.