'If people feel unwell, they should seek medical help immediately, rather than waiting to see if the effects wear off after sleep and re-hydrating. '
Officers in Leicestershire have released advice as green pills, similar to those in the picture below, have been associated with a number of recent deaths and hospitalisations.
The warning is about counterfeit Oxycodone – Nitazene.
Leicestershire Police said: "We encourage people not to take these pills even in small amounts, and to consider the potential harm of taking any pills.
"If people feel unwell, they should seek medical help immediately, rather than waiting to see if the effects wear off after sleep and re-hydrating.
"At this time there have been no reports in Leicestershire but it is important that people attending events this weekend are aware of the risk."

Image released by Leicestershire Police
Man convicted after stabbing two men through car window in Quorn
Deadline approaching for Leicestershire secondary school applications
Mountsorrel recycling site to close for essential repairs
Charnwood Borough Council are looking for a Youngster to switch on Loughborough’s Christmas lights
Loughborough parks closed due to high winds
Eleven arrested in Leicestershire vehicle crime crackdown
Leicestershire recycling centres launch ReHome Zones for unwanted household items
Hinckley Leisure Centre Car Park to be closed for one day
