There are warnings tonight against taking mephedrone. It comes are three people have been admitted to hospital after taking the drug. Two of those admitted are in a critical condition and in intensive care.
An undercover ITV Cymru Wales reporter has exposed the extent of Llanelli's drugs problem, obtaining a gram of the class B drug Mephedrone, after just an hour on the streets of the town.
Recent figures show that of a hundred offences committed relating to the drug - commonly known as Meow Meow - in Carmarthenshire in just six months nearly half were in Llanelli.
The investigation is part of a special Hacio programme to be broadcast on S4C at 10pm on Wednesday.
Dyfed-Powys Police admits drugs are "an issue" in Llanelli, and says tackling drug misuse and supply is "a priority" for the force.
An ITV Cymru Wales reporter has been undercover to reveal the extent of the drugs problem on the streets of Llanelli.
After spending less than an hour in the West Wales town, our reporter had managed to obtain a gram of the class B drug Mephedrone.
The investigation is part of a special programme on the drug scene in Llanelli, to be broadcast on Hacio on S4C at 10pm on Wednesday.
Dyfed-Powys Police and Crime Commissioner Christopher Salmon has acknowledged the scale of the problem.
Health Minister Lesley Griffiths says she does not consider mephedrone use 'a huge problem' in Wales.
But she added that educating people about it now will raise awareness of the dangers and help prevent people trying the substance in future.
A campaign has been launched today to highlight the dangers of using the banned substance mephedrone.
It is estimated that more than 134,000 youngsters aged 16 to 24 have tried the formerly legal high, commonly known as 'meow meow'.
Cardiff bar manager Sian Hills told ITV Wales people that people often underestimate the power of the drug.
The Health Minister will launch a campaign later today to highlight the dangers of using the banned substance mephedrone. Commonly called 'meow meow' or 'miaow miaow', it is estimated that three-hundred thousand young people in the UK used the drug last year.
The drug - which is described as a mix between amphetamines, cocaine and ecstasy - can cause heart palpitations, paranoia, vomiting, agitation, fits, suicidal thoughts and depression. In Wrexham a new drop in centre opens this morning due to "increased demand" from drug users.