Overdoses can be mild to severe depending on how much of the drug is taken and if any other depressants have been taken. Xanax overdose reflect the central nervous system depression of the brain and may include one or more of the following symptoms:

* Somnolence (difficulty staying awake)
* Mental confusion
* Hypotension
* Impaired motor functions
o Impaired or absent reflexes
o Impaired balance
o Dizziness
* Hypoventilation (Respiratory Depression)
* Coma
* Death

About 50% of the cases of death involving alprazolam were attributed to combined drug toxicity of alprazolam and another drug, most often cocaine and methadone. Only 1% of such deaths was attributed to alprazolam alone.