So called 'legal highs' are more dangerous than illegal drugs - that's the warning from one of Wales' leading drug experts.
Yaina Samuels, from the social enterprise Nu Hi Training who educate people about substance misuse, told ITV News that it is a huge problem in Wales, that is set to get worse.
ITV News tried to contact several stockists of these so-called 'legal highs' but none were available for comment.
Today, the Welsh Assembly Health and Social Care Committee have called for the supply of the drugs to be banned. The UK Government have told ITV News that they support the ban, and are developing proposals:
Watch Megan Boot's report on the issue: