Rebecca Chapa, 39, prepares to take a dose of fentanyl in San Francisco’s Tenderloin group. Chapa, who’s at the start from Eureka, has been residing at the streets for the previous six months and makes use of each fentanyl and Xanax whilst working out the hazards of mixing them.Stephen Lam/The ChronicleRebecca Chapa moved to San Francisco this yr, she mentioned, for one reason why: Readily to be had “Xanax” bought at the streets. The 39-year-old has been hooked on benzodiazepines — a category of depressant medication ceaselessly used to regard nervousness, insomnia and seizures — since she was once a tender grownup.In the beginning prescribed clonazepam for nervousness, melancholy and a temper dysfunction, Chapa mentioned she started blending benzodiazepines with opioids about 10 years in the past. Pairing the 2 in combination, she mentioned, makes the top last more, despite the fact that mavens warning it may be particularly fatal. AdvertisementArticle continues under this advert“It’s like doing fentanyl or heroin, you’re doing it in the beginning since you’re getting top,” she mentioned. “However then it wears off, and also you’re simply doing it to get better.”Within the first 10 months of 2023, 47 San Franciscans died of an unintentional overdose with a mixture of benzodiazepines and both opioids or stimulants of their device — greater than throughout any of the former 3 years.The unregulated and unreliable unlawful drug marketplace around the nation has ended in a proliferation of what mavens name “clothier benzos” or faux Xanax, and so they’re exacerbating the opioid epidemic’s fatal toll in San Francisco. Those medication are in the similar elegance as Xanax or Valium however had been by no means licensed to be used in the USA. They’re most often pressed into drugs in China or Mexico but in addition will also be manufactured as powders and gummies. Some are bought in counterfeit packaging to move off as brand-name pharmaceutical medication. AdvertisementArticle continues under this adMost just lately, government have reported the expanding occurrence of what’s known as “benzo dope” — the blending of an opioid and non-pharmaceutical benzodiazepines in the similar tablet or powder. Initial information launched by means of the San Francisco Clinical Examiner this month indicated that town had surpassed its deadliest yr for unintentional drug overdose deaths, with 752 deaths recorded via November. Rebecca Chapa, 39, holds a work of aluminum foil as she prepares to take a dose of fentanyl within the Tenderloin group of San Francisco, Tuesday, Dec. 19, 2023. Chapa, who’s at the start from Eureka, has been residing at the streets for the previous six months and makes use of each fentanyl and Xanax, whilst working out the hazards of the use of each ingredients in combination the place blending Xanax, or a identical depressant similar to bromazolam can heighten sedation to extend the possibility of respiration arrest.Stephen Lam/the ChronicleA contemporary exam of demise stories by means of the Chronicle discovered {that a} emerging quantity of people that fatally overdose in San Francisco have taken each fentanyl and a stimulant. However the dangers related to combining other medication, a pattern that researchers name polysubstance use, extends past that pairing. The usage of unregulated benzodiazepines together with opioids is very unhealthy, mentioned Keith Humphreys, a professor of psychiatry at Stanford College who was once a senior drug coverage adviser within the Obama management. AdvertisementArticle continues under this advert“Each benzodiazepines and opioids are respiration suppressants. They decelerate a variety of purposes within the frame, considered one of which is respiring,” Humphreys mentioned. “While you mix them, it’s now not one plus one equals two. It’s one plus one equals 3.”Brian Clark, particular agent in rate for the San Francisco box department of the Drug Enforcement Management, mentioned his company has noticed a “dramatic building up of trafficking and abuse of clothier benzos” lately. Since July, the DEA has seized 6 kilos of drugs within the Tenderloin, a few of which incorporated “benzo dope” and non-pharmaceutical “benzos.”The emerging use of “clothier” or “boulevard benzos” has created a “cat-and-mouse sport between arranged crime and legislation enforcement,” in line with researchers. Rebecca Chapa, 39, left, takes a lighter from a chum as she prepares to take a dose of fentanyl within the Tenderloin group of San Francisco, Tuesday, Dec. 19, 2023. Chapa, who’s at the start from Eureka, has been residing at the streets for the previous six months and makes use of each fentanyl and Xanax, whilst working out the hazards of the use of each ingredients in combination the place blending Xanax, or a identical depressant similar to bromazolam can heighten sedation to extend the possibility of respiration arrest.Stephen Lam/the ChronicleNew clothier benzos don’t seem to be unlawful at preliminary advent into the worldwide drug marketplace since the government haven’t regulated the brand new product but. And once they’re at the radar of global government, a brand new amendment of the drug emerges to evade crackdowns. This steady cycle of amendment lets in producers to keep away from sanctions whilst expanding the opportunity of drug abuse. AdvertisementArticle continues under this adIn San Francisco, as an example, a clothier benzo known as bromazolam was once discovered within the methods of 38 overdose sufferers this yr. That’s an enormous leap from January 2020 to November 2022, when it was once a consider handiest two deadly overdoses. In March 2020, the International Well being Group positioned flualprazolam and etizolam — then the 2 maximum prevalent clothier benzos — beneath global regulate. The DEA adopted up later by means of briefly scheduling the ones and 3 different clothier benzos as Agenda I medication — outlined as medication without a recognized scientific use and a powerful attainable for abuse. “Necessarily, what is going on at this time is that bromazolam is solely the alternative for the opposite two,” mentioned Alex Krotulski, affiliate director for the Heart for Forensic Science Analysis and Schooling.That’s why checking out wastewater for quite a lot of medication may lend a hand native, state and federal officers to stay tabs at the evolving unlawful drug provide, in line with Humphreys.Undercover narcotics brokers display fentanyl that they seized after an arrest of a Honduran drug broker on seventh and Challenge Streets throughout a buy-bust operation in San Francisco on Wednesday, June 21, 2023.Gabrielle Lurie/The Chronicle“The way in which we generally to find out when a brand new drug has entered the availability is … lifeless our bodies,” he mentioned. “Clearly, we’d reasonably now not to find out that means.”AdvertisementArticle continues under this adThe Division of Public Well being introduced this month it was once collaborating in a countrywide program to start out wastewater drug checking out, however this system won’t quilt benzodiazepines. Dr. Jeffrey Hom, the company’s director of inhabitants behavioral well being, mentioned this system is also expanded. The doubtless deadly penalties of blending a formidable substance similar to fentanyl with a clothier benzo is widely known to many of us the use of medication at the streets of Tenderloin.One fentanyl person, who mentioned she steers transparent of benzos, known as it a “assured overdose.”A.J. Fowler, 47, mentioned he blended opioids and Xanax for almost 10 years, however he stopped the use of benzos after blacking out “dozens of instances.” The withdrawals, he mentioned, lasted 3 weeks. It was once the worst ache he’d ever skilled.“That was once so unhealthy that I by no means need to contact it once more,” he mentioned.Chapa hopes to forestall the use of, she mentioned, however she desires to verify she’s going to get the proper scientific remedy. “If they only stay me in detox for 4 days and shoot me out, then I’m gonna return out and get top and most definitely overdose and die as a result of I’ve been sober for then again many days,” she mentioned. “That’s what took place to my remaining boyfriend.”Correction: An previous model of this tale misstated the selection of folks in San Francisco who died of an unintentional overdose with bromazolam of their device in 2023. That quantity is 38.