The trial was carried out by the Biotrial clinic for Bial, a company that specializes in clinical trials, and took place in the western city of Rennes, France. Some reports claim the drug contains cannabinoids, the active ingredient in cannabis. However, French officials deny that.

French Minister of Health Marisol Touraine said the drug is meant to work on the body's pain center, according to a report in The Guardian.

Of the six male volunteers who were hospitalized, one man is brain dead, three are suffering a "handicap that could be irreversible" and another has neurological problems. The sixth volunteer shows no symptoms but is being monitored.

The study involved 90 people who took some dosage of the drug. The trial has been stopped and all volunteers have been recalled. The case has been referred to the health branch of the Paris prosecutor's office.

The Associated Press reported Friday that no antidote exists for the drug.

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Austin Walters died from an overdose in 2021 after taking a Xanax pill laced with fentanyl, his father said. A new law named after Austin and aimed at preventing deaths from fentanyl has resulted in its first convictions in Georgia, prosecutors said. (Family photo)

Credit: Family photo