Unfortunately the few medications that have shown to reduce stuttering in some people will stutter come with a bunch of nasty side effects. Xanax works for many. But is only a short term solution. It's highly addictive and your brain gets used to it's effect quickly, which results in needing a higher dosage. Another group of medication that has shown to be effective are dopamine antagonists. These have the following potential side effects: weight gain, libido loss/sexual dysfunction and increased risk for heart disease, strokes and diabetes with long term usage.