How Long Does Klonopin Last?

Klonopin is a commonly prescribed benzodiazepine (benzo) that has relatively long-lasting effects. The effects of most benzos, such as Xanax or Valium, last between 3-4 hours, whereas the effects of Klonopin can last anywhere from 6-12 hours.

How long does .5mg Klonopin last?

A: Clonazepam's effects last about 8 to 12 hours, so the clonazepam dosage for healthy adults is 2 to 3 times a day. It works quickly, usually within an hour, and reaches peak levels by about four hours. The clonazepam half-life is long at 30 to 40 hours.

How long does Klonopin take to peak?

Klonopin has a long half-life (the half-life of a drug is the time it takes for its peak blood level to fall by 50) at 30-40 hours, and its effects last 8-12 hours, with peak levels around 4 hours.