In a separate report, sources told ABC News that the toxicology results showed multiple substances in Payne’s system, including pink cocaine – a combination of various substances such as ketamine, MDMA, opioids and methamphetamine.

Dr. Chris Tuell, clinical director of addiction services at Ohio’s Lindner Center of HOPE, told Fox News Digital that pink cocaine – often called Tusi or Tuci – usually does not actually contain any cocaine.

The drug is typically a powdery mix that can contain psychoactive substances such as hallucinogens, anti-anxiety medications, stimulants and depressants, he said.

ONE DIRECTION LIAM PAYNE’S INITIAL TOXICOLOGY RESULTS REVEALED: REPORT

The street drug with the bright coloring (due to food dye) has been growing in popularity due to its “psychedelic and stimulant properties,” Mell McCracken, executive director of No Matter What Recovery in Los Angeles, told Fox News Digital.

“Users report that the ‘high’ is not too dissimilar to [that of] another ubiquitous street drug, ecstasy (aka Molly or MDMA),” the expert said. 

Bags containing a powder known as Tusi or pink cocaine are pictured in Medellin, Colombia, on April 2, 2022. (JOAQUIN SARMIENTO/AFP via Getty Images)

“Both have been reported to cause an increased sense of well-being, warmth and openness toward others and are very popular on the party circuit scene,” he added.

Pink cocaine can have “serious consequences,” the drug counselor warned, and can be fatal if taken in large doses.

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“While the psychedelic properties of pink cocaine can bring about feelings of euphoria, it can also cause anxiety, paranoia and panic attacks,” McCracken warned.

“Because it’s a stimulant, it causes increased heart rate, blood pressure and body temperature — a combination of factors that can lead to heart attacks and strokes.”

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Other side effects can include nausea, vomiting, muscle spasms and tremors, McCracken said, while frequent use can lead to chronic mental health conditions such as depression, anxiety disorders, panic attacks and social phobias.

Ketamine, Extasis, MDMA and Mezcaline are pictured before being mixed to produce a powder known as Tusi or pink cocaine in Medellin, Colombia, on April 2, 2022. (JOAQUIN SARMIENTO/AFP via Getty Images)

There has been an uptick of designer drugs that work by boosting dopamine, the “neurochemical that provides reward and pleasure,” Tuell added.

“A pink cocaine user can expect to experience the side effects of confusion, distorted thoughts and hallucinations,” he told Fox News Digital.

Pink cocaine has also been linked to a lawsuit against rapper and music producer Sean “Diddy” Combs – who is currently awaiting trial for sex trafficking and other charges. It was named in the suit as one of his go-to drugs, according to Fox 5 New York and other sources.  

Payne’s final toxicology results are still pending and are not expected to be made public for weeks, the AP reported.

Fox News Digital’s Tracy Wright contributed reporting.