As stated in other comments, Xanax or other benzos can bring you down. Or you could go to the hospital and get injected with a nice strong sedative like Haldol. None of these approaches are particularly healthy longterm.
The closest thing I've found to a magic pill after years of searching has been CBD. Smoking a high CBD cannabis strain is probably the fastest way to get it in your system in an emergency. If you're somewhere smoking isn't an option, they have tinctures you can put under your tongue. Unlike Xanax or other pharmaceutical solutions, CBD is natural, has mild to no side effects, isn't addictive, and is non-toxic i.e. it won't kill you if you overdose.
The closest thing I've found to a magic pill after years of searching has been CBD. Smoking a high CBD cannabis strain is probably the fastest way to get it in your system in an emergency. If you're somewhere smoking isn't an option, they have tinctures you can put under your tongue. Unlike Xanax or other pharmaceutical solutions, CBD is natural, has mild to no side effects, isn't addictive, and is non-toxic i.e. it won't kill you if you overdose.