klonopin and valium how long does these stay in system
182. Valium can stay in your system and be detected in urine for up to 5-7 days after therapeutic use. Chronic use (over one year) of Valium, however, can be detected much longer. The detection window for Valium in urine screens is up to 4-6 weeks. More here on the detection window and drug testing for Valium.
A: Klonopin (clonazepam) is a benzodiazepine that is used to treat anxiety and panic disorders. According to the package insert, it has a half-life of 30-40 hours. The half-life represents the time it takes the body to reduce the amount of clonazepam by half.