A warning about the high-potency drugs has been issued after “several” people partying at “several London venues” were hospitalized.

Bosses at Fabric nightclub in Farringdon said some revelers “became very ill and had seizures” last weekend.

Although the cause of the incidents has not been established, it is believed they could be linked to “unusually strong” ecstasy pills or MDMA.

“We are aware of several hospitalizations at several London sites last weekend, where people experienced seizures and became very ill,” Fabric said in a statement.

“Although the causes of each incident are unclear, they could be due to unusually strong pills/MDMA available on the market.

“A typical high dose is around 200 mg, but some of these pills are reported to contain more than 300 mg, creating a high risk of overdose.

“When in doubt, don’t take it.”

Fabric has a social team that patrols the world-famous venue and can be contacted via WhatsApp during club nights.

The London Ambulance Service (LAS) confirmed that paramedics attended two drug-related incidents in Fabric on October 13.

But he couldn’t confirm exactly what the patients had taken.

A Metropolitan Police spokesperson said: “There is no ‘safe’ way to use drugs. There is always a risk. Don’t buy illegal drugs.

Earlier this year, charities issued warnings about super-potent ecstasy pills, which are believed to be in circulation in the UK for the first time in five years.

Ahead of the Glastonbury festival, The Loop – a not-for-profit organization which tests drugs in circulation – urged revelers to be careful after finding pills containing more than 300mg of MDMA at Manchester’s Parklife festival.

He said recent tests show the strength of ecstasy pills has returned to pre-pandemic levels and warned this “could increase the risk for users”, young people who came of age during Covid ” particularly at risk. Adam Waugh, training coordinator at The Loop said: “The safest option is not to take pills. However, if someone wants to take them, it’s safest to start with a quarter.