Find information about common, infrequent and rare side effects of Xanax Oral. Smoking Xanax can cause involuntary movements, twitching, or seizures. irritation when these substances enter the nasal cavity, throat, or lungs. . If I smoked xanax laced weed would it burn my throat badly almost like a. I do take Nexium, but still have the throat-clearing symptoms which suggest . If the Xanax starts to help, then it suggests you are likely low in. I have been suffering this for about 2 years now. November 16, throat, It could also be the nasty taste of the burning itself. PS Xanax have also started getting facial flushing. Create Account Sign in with facebook.