Side-by-Side
Xanax vs Valium: Key Differences
|
Xanax
alprazolam
|
Valium
diazepam
|
|
|---|---|---|
| Drug Class | Benzodiazepine (short-acting) | Benzodiazepine (long-acting) |
| Half-life | 6–27 hours | 20–100 hours |
| Primary Use | Panic disorder, generalized anxiety disorder | Anxiety, alcohol withdrawal, muscle spasms, seizures |
| ⬛ Black Box Warning | High risk of abuse, addiction, and physical dependence. Potentially fatal respiratory depression when combined with opioids or other CNS depressants. Withdrawal can be life-threatening. | Same as Xanax — abuse, addiction, and fatal respiratory depression with CNS depressants. Valium's very long half-life means the drug accumulates over time, increasing fall and sedation risks especially in elderly patients. |
| Key Side Effects |
|
|
Common Questions
Xanax vs Valium FAQ
Xanax is considered more potent by dose — 0.5mg of alprazolam is roughly equivalent to 5–10mg of diazepam. Xanax also acts faster and produces a more intense, shorter peak effect, which is one reason it has higher abuse and dependence potential despite the lower dose. Valium's effect is smoother and longer-lasting.
Xanax is generally considered harder to stop because of its short half-life. When Xanax wears off quickly, the brain experiences more pronounced withdrawal between doses, creating a cycle of relief and craving. Valium's long half-life makes tapering somewhat easier, which is why diazepam is sometimes used to help people taper off shorter-acting benzodiazepines. Both require a medically supervised taper — abrupt discontinuation of either can cause seizures.
No — taking two benzodiazepines simultaneously is not standard medical practice and significantly amplifies the risks of respiratory depression, sedation, and overdose. Both are CNS depressants from the same drug class. If you are taking one and your doctor considers adding the other, get a clear explanation of the rationale and confirm they are aware of your full medication list, especially any opioid pain medications.
Full Profiles
See Each Drug's Complete FDA Data
More Comparisons
Other Drug Comparisons
Medical Disclaimer: PillScope provides educational information only. This page is not medical advice. Do not stop or change any medication without consulting your doctor or pharmacist. FDA adverse event data reflects voluntary reports and does not establish that a drug caused a specific outcome.