A leading medical consultant has called for a probe into the use of spice following escalating problems with the synthetic drug in Swansea prison and at A&E departments.
Andy Macnab, emergency medicine consultant at Morriston Hospital, said education is needed to better understand the dangers surrounding the substance.
A hard-hitting report from the Independent Monitoring Board highlighted the problem with spice within Swansea Prison.
It comes as both Morriston and Princess of Wales Hospital in Bridgend saw a rise in spice-related admissions from one or two cases a year to three or four each night at weekends.
Mr Macnab said: “I’d like to see an increase in investigation activity into spice, and much better education about the dangers of using it.”
He warned over the effect of spice and how it can make patients really aggressive and psychotic leading them to lash out at the staff leading cases of violence to rise within the department.
Mr Macnab previously said: “Synthetic cannabinoids, or so-called spice, does not act like cannabis.
“It makes users very unpredictable and accounts for a large number of incidents of violence and aggression in the department.
“Some people become very aggressive towards friends and family, and they are often very difficult to control. It can take several staff and a couple of hours to deal with them.
“It can take a member of security staff, two or three nurses and a couple of doctors to deal with them.
“Aggressive behaviour can include biting, kicking, swearing and smashing equipment and windows.
“They arrive in the back of police vans or by ambulance, sometimes unconscious.”
He added: “We have a problem with inmates who have taken Spice coming into Morriston and the Princess of Wales EDs from Swansea and Parc prisons.
“It is getting worse. It used to be one or two cases a year, then a few a month and now it is three or four each night at weekends.”
Carolyn Harris, MP for Swansea East, said she believed there needed to be tougher action taken over the drug, she said:
“This is a drug for whatever reason it’s making people you don’t expect to have an interest in it.
“It’s causing many problems for security and making demands on the hospital sector because of the legitimacy of it.
“The policy of making it illegal is not working effectively we need to have a blanket ban.”
She added after going on a prison visit “you can feel it in the air.”
“The people selling it have no morals,” she said.
“There is an argument some drugs have medical purposes, this drug is an absolute killer.”
A new report by Public Health Wales has found that hospital admissions related to cannabis and “synthetic cannabinoids” such as spice have increased from 518 in 2011/12 to 1,323 in 2016/17.
Spice, otherwise known as black mamba or frozen spice, is known as the “zombie drug” and has led to a rise in the number of people slumped and passed out on high streets in broad daylight.