Clonazepam is a generic drug. It’s also sold as the brand-name drug Klonopin. Xanax, on the other hand, is a brand-name version of the drug alprazolam. Diazepam is known to cause extreme drowsiness, so clonazepam may be a better choice for those who need to take the medication while working. Compare Clonazepam vs Diazepam head-to-head for uses, ratings, cost, side effects, interactions and more. Clonazepam rated 8.4/10 vs Diazepam rated 8.6/10 in overall patient satisfaction. Clonazepam rated 8.4/10 vs Diazepam rated 8.6/10 in overall patient satisfaction. Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Zimmermann on diazepam vs klonopin: Both of these medications are antianxiety medications. Which will be most effective for an individual depends on many factors. Consult your doctor about which might be best for you. Actually, clonazepam is the right choice for anxiety/panic attacks sine a little goes a long way. I was started on clonazepam 40 years ago for my panic attacks, when I thought I was going to die any minute, took 0.5 if my medication and continued on my med and panic attacks stopped. Compare Clonazepam vs. Diazepam, which is better for uses like: Anxiety, Withdrawal Symptoms and Insomnia. Compare head-to-head ratings, side effects, warnings, dosages, interactions and patient reviews. Patients rated Clonazepam 4/5 over Diazepam 3.7/5 in overall satisfaction. It is thought that lorazepam, diazepam, and other benzodiazepines like Xanax (alprazolam) or Klonopin (Clonazepam) may act by enhancing the effects of GABA in the brain to reduce activity, and thus reduce anxiety. Klonopin (clonazepam) can be used for immediate relief of panic attacks and seizures, but is not intended for long-term management. Valium (diazepam) is effective for occasional or short-term use for anxiety and muscle spasm. Compared to similar drugs, Valium (diazepam) acts very quickly but can have interactions with other medicines.