Xanax Addiction

What are CNS depressants?
CNS depressants are substances that can slow normal brain function. Because of this property, some CNS depressants are useful in the treatment of anxiety and sleep disorders. Among the medications that are commonly prescribed for these purposes are the following:
Barbiturates, such as mephobarbital (Mebaral) and pentobarbital sodium (Nembutal), which are used to [...]

Xanax: Special Warnings and Interactions with anti anxiety medication
Xanax: When should this anti anxiety medication not be prescribed?
Xanax shouldn’t be prescribed if you are sensitive to or have ever had an allergic reaction to this anti anxiety drug or to other tranquilizers. You should also avoid Xanax while taking the antifungal drug [...]