QUESTION & ANSWER
How long does clonazepam last?
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. This means it can take several days to rid the body of it.