Dealers are flooding Glasgow streets with new super-strength ecstasy pills, the Evening Times can today reveal.

The “party pills”, which are 10 times stronger than ecstasy tablets on sale five years ago, increase the risk of irreparable brain damage, according to scientists.

Despite repeated warnings from drugs experts, dealers are still taking risks with people’s lives by peddling the potent pills.

Tests have found the yellow UPS pills, which are believed to originate in Switzerland, contain up to 275mg of MDMA – a dangerously high level.

This compares to other tablets circulating in the city which contain around 35mg of MDMA.

Research carried out by a European charity reveals the super-strength batch of the UPS party drug is “neurotoxic and increases the likelihood of irreparable brain damage”.

It continues: “There is a risk of drying out, or even heat stroke because of the body temperature, in relation to the dose increase.”

Six clubbers were taken to hospital after taking ecstasy at a gig in Middlesbrough.

Police said the revellers collapsed on Saturday night after taking MDMA tablets marked with the letters UPS.

A source told the Evening Times: “We have some intelligence that yellow UPS tablets are on sale in Glasgow.

“It doesn’t matter whether it’s yellow UPS, pink Superman or green Rolex tablets, you don’t know what is in them.

“They simply are not safe.”

The Scottish Drugs Forum posted a warning about the potent batch of ecstasy.

It said: “UPS ecstasy circulating in some parts of Scotland.”

Charity workers also said similar pills, marked with UPS, were tested and analysis revealed they contain more than 200mg MDMA.

The Evening Times previously revealed how police discovered dodgy ecstasy pills during searches of Glasgow nightclubs.

The drugs were found when officers swept the floors of clubs after closing time and sifted through what had been collected.

More than 20 different pills were collected and sent to Glasgow University’s Forensic Medicine and Science unit for analysis.

And the results laid bare the true extent of the deadly mix of substances to create “ecstasy” – and the variety of MDMA concentration in each pill.

In some European countries, clubbers are able to go to “testing stations” to check for dodgy pills before taking them.

The move has seen ecstasy deaths plummet in recent years.

Police in Glasgow have repeatedly warned about the dangers of “party pills” and so-called legal highs.

A warning was issued after the death of 17-year-old Regane MacColl who fell ill in Glasgow’s Arches nightclub.

Her death was linked to Red Mortal Kombat pills.

Green and yellow pills – dubbed Rockstar – also sparked fears after it was discovered they contained a deadly mix of PMA, PMMA, and caffeine.

Chief Inspector Mark Sutherland, who is in charge of policing the majority of Glasgow’s nightclubs, said: “Drug dealers are only interested in profit and my officers regularly attend incidents, where young people have put themselves at risk by taking these substances.

“We will not tolerate drug misuse within the city centre that harms our young people and tears families apart.”