Klonopin is a medication used to treat anxiety, panic attacks, and certain types of seizures. It contains clonazepam, a benzodiazepine. Klonopin is also a commonly abused drug and has a long half-life, staying in the system for weeks. Studies have shown that it can be detected in urine for up to a month after the last use, although it typically takes six to nine days for a single dose to be eliminated.
If you are taking Klonopin as prescribed, you shouldn’t be concerned about passing a drug test. However, if you are abusing the drug, you may be worried about detection or withdrawal symptoms.
The elimination half-life of a drug is the amount of time it takes for half of a single dose to be eliminated from the body. Knowing the half-life of a drug can help you predict the start of withdrawal symptoms, determine if it’s safe to take another dose, and understand how long the drug stays in your system.
Clonazepam has a fairly long elimination half-life of 30 to 40 hours.[1]
For a drug to completely leave your system, it typically takes around 4 to 5 times the length of its half-life. With a half-life of 30-40 hours, Klonopin can remain in the body for 6 to 9 days after you stop taking it. Urine tests can detect clonazepam and its primary metabolite, 7-amino-clonazepam, for 4 or more days after your last use.
What Factors Influence How Long Klonopin Stays In Your System?
Klonopin can remain in some people’s systems longer than others based on certain factors. This is because there are several variables that dictate how long it takes your body to metabolize and eliminate the drug.[2] These variables include:
It’s important to note that these are general guidelines and the specific elimination time for each individual can vary.
The long-term effects of Klonopin abuse and addiction can be significant, both mentally and physically. People who misuse or abuse Klonopin may put themselves at risk for a range of health issues, from withdrawal symptoms to physical dependence. With the help of medical professionals, individuals experiencing problems with Klonopin abuse and addiction can find immediate relief and develop a plan for lasting recovery.
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Magnified Health Systems aims to improve the quality of life for people struggling with substance use or mental health disorder with fact-based content about the nature of behavioral health conditions, treatment options and their related outcomes. We publish material that is researched, cited, edited and reviewed by licensed medical professionals. The information we provide is not intended to be a substitute for professional medical advice, diagnosis or treatment. It should not be used in place of the advice of your physician or other qualified healthcare providers.
Dr. Bickley graduated from U.C. Irvine with honors: Phi Beta Kappa, Golden Key International Honor Society, Cum Laude. He has been featured on national radio and print media. He is also a frequent lecturer at National Conferences. He holds an A.S. degree in Drug & Alcohol Studies, and two B.A. degrees in Criminology & Psychology, and masters and doctoral degree in Clinical Psychology. He is a licensed California Drug & Alcohol Counselor Level II, a licensed Clinical Supervisor and is certified in treating Eating Disorders.
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