OP, I recommend combing Sertraline (Zoloft) with Xanax to achieve most optimal results. Zoloft has been indicated in more clinical studies, and is currently the best pharmaceutical treatment we have for stuttering. It’s a SSRI like Citalopram (Celexa), but targets anxiety disorders more effectively. With this being said, I don’t think you should combine the two medications. I understand the pressing desire to absolve yourself of this affliction—and with the combination of these medications you likely will—but, it will come at a cost. Long-term use of benzodiazepines is highly harmful to cognitive function. More so than other drug classes. Benzodiazepines have profound effects on memory, executive function, and brain structure. These drugs interfere with the brain’s normal processes by altering GABAergic transmission, impairing learning and memory consolidation, and promoting cognitive dulling through sedation. Over time, these changes lead to tolerance, dependence, cognitive decline, and, in some cases, structural damage to key areas of the brain. For these reasons, benzodiazepines are typically recommended for short-term use only, and their long-term use is strongly discouraged unless absolutely necessary and under close medical supervision. In essence, you will become less intelligent the longer you take this drug. Once you reach fluency through the use of this drug, you will become dependent psychologically and physiologically. It is unlikely you will be able to quit given how addictive the drug class is, and given you will know how it feels to speak fluently and will never want to go back. I understand your doctor prescribed you this medication, but doctors are not as educated as you would think when it comes to neuroscience and pharmaceutical research. The silver lining: SSRIs have a safe long term safety profile. I highly recommend Zoloft and starting CBT. The core cause of stuttering is the tension between automatic speech processing and conscious speech processing. Intrusive thoughts cause anxiety and trigger conscious speech processing in PWS. The cure: learn to speak automatically like the neurotypical person does.