Numbing shots, also known as local anesthetics, are medications injected into the gums or around the teeth to block pain signals from reaching the brain during dental procedures. The active ingredient in most numbing shots is lidocaine or articaine, which temporarily blocks the sodium channels in nerve cells, preventing the transmission of pain signals.
While numbing shots are effective at providing pain relief during dental procedures, they are not known to produce a euphoric or "high" feeling. The effects of numbing shots are localized to the area of injection and do not reach the brain in sufficient concentrations to produce psychoactive effects.