Clonazepam High: What One Should Know About Klonopin High?

Last Updated: June 3, 2020

Authored by Olivier George, Ph.D.

Klonopin, a brand name for Clonazepam is commonly used to treat seizures, panic, and anxiety. However, due to the high, it can give it has become a popular recreational drug too.

But how much Klonopin does it take to get high? What does Clonazepam do? And at what point does Klonopin change from the relaxed feeling to the dangerous drug?

The Features of Klonopin Recreational Effects

Benzodiazepines or other pills and glass of alcohol
Klonopin is often prescribed as an aid for extreme anxiety and panic. However, this depressants effects on the gamma-aminobutyric acid (GABA) in the brain, have made it increasingly popular recreationally. This is down to its sedative effects. The gaining popularity of Klonopin recreational use means it is now more important than ever to know how much Clonazepam it takes to get high and what is a safe amount of the drug to consume.
According to the US Food And Drug Administration, Klonopin is available in doses ranging from 0.25mg to 2mg, from online pharmacies and stores with pharmacies on prescription. The drug can also be purchased online without prescription. Depending on a person’s body mass index, diet and tolerance to the drug, it can take just 0.25mg to get high on Klonopin. A Klonopin high then becomes dangerous after taking more than body is ready for.

What Does Klonopin High Feel Like?

Clonazepam high is usually characterized by mild euphoria, relaxation of the mind and reduced anxiety, relaxation of the body, and drowsiness. Even users who take Klonopin without a sole purpose of getting high on it, state that the sensation from the drug can be extremely pleasurable.
Klonopin is a depressant and because of that its effects essentially slow the body. Klonopin often makes users fatigued and dreary amongst other things. Klonopin highs range from making the user extremely tired and down to making them social and maybe even a little over the top. This drastic difference often makes the highs a challenge to deal with and even harder to judge the person who is on Clonazepam.
So how long does it take Clonazepam to work? Klonopin is a fast affecting drug and usually kicks in, in less than an hour. It then can last 8-10 hours depending on the user and a number of factors related to their health, size, and lifestyle. Plus the dosage of the drug they have taken. In those 8-10 hours, the Klonopin user may experience a range of feelings, from fatigue to complete sedation and feeling like a zombie. Some users even experience blackouts.
Klonopin may also make users do things in excess, such as:

  • Abuse other substances more – As a depressant, Klonopin can lower inhibitions and cause users to abuse other drugs and take more Clonazepam.
  • Eat and drink more – Clonazepam can trigger cravings
  • Increased desire to socialize – Although the drug is a sedative, the user may become more sociable due to a lack of inhibitions or anxiety holding them back.
  • Increased fatigue and desire to sleep – The drugs sedative effects make some users constantly tired.

What are the Klonopin After the High Effects?

Drug Addicted Person With Syringe And Pills On The Floor
Klonopin high effects are not only felt during use but afterward too. The after high effects of Klonopin can be just as dangerous. After high effects consist of:

  • Fatigue – Many people ask does Klonopin make one tired after use. The answer is yes. Due to the 40 hour half-life, one can still be fatigued after use.
  • Dizziness – Impaired cognition may cause to remain dizzy.
  • Mood Swings – During withdrawal from the drug, mood swings like anger and sadness may occur more frequently.
  • Anxiety – Anxiety may recur but enhanced.
  • Depression – Depression is a common after high effect due to a body adjusting to no longer having the drugs high.
  • Nausea – This is also due to the body readjusting
  • Slow Reactions – Klonopin depresses the body system so reactions may not have returned to normal yet
  • Lack or Increased desire to eat – Cravings for food and drink may increase or decrease depending on how the body reacts to the drug no longer being in the system.
  • Neglect of Duties – This can often stem from the accumulation of the other after high effects as an individual cannot overcome the mental and physical symptoms.
  • Cravings For More – As with many drugs, Klonopin is addictive and often makes one craves for more when not using.

How long does Clonazepam last in the system?

Klonopin kicks in less than an hour and the high last 8-10 hours, but it takes a little longer to exit the system. The half-life of the drug is 30-40 hours so it can take up to two days to leave the system. Due to the drug being a depressant, the strongest after high effects will be in the earlier stages of this period and will gradually disperse over the 40 hour period. A user may also drink a lot of water and experience anxiety after that period as the drug can have longer lasting effects on an individual.

How Klonopin Feels – Knowing The Limit

It is difficult to state an exact limit on Klonopin consumption, due to everyone being able to deal with a different level of the drug because of diet, build etc. If blackouts or a zombie-like state are possible experiences when one takes Klonopin.

Page Sources


Published on: October 21st, 2016

Updated on: June 3rd, 2020

About Author

Olivier George, Ph.D.

Olivier George is a medical writer and head manager of the rehab center in California. He spends a lot of time in collecting and analyzing the traditional approaches for substance abuse treatment and assessing their efficiency.


Leave a comment

  • marie
    my 26 yr old son has taken 30 days of 2mg clonazepam along with 0.5mg of alprazolam in a period of 5 days. he also takes zoplicone 7.5mg, volproic acid and clobezam as he has epilepsy. he has drop seizures. He’s been acting very strange, with a lot of anger and rage and is dillusional. what can we do?
    • Ryn
      Lock up his medications and give them to him on the correct schedule. Also ask his doctor for a drug like Gabapentin or Clonodine to help with the withdraws. Good luck!
      • Missblondbombshell
        Terrible, ineffective advice.
        • loose cannon
          There is no clear right or wrong answer when it comes to addiction. What worked for you may not work for another, and vice-versa.
    • Missblondbombshell
      No stranger online can give you solid advice. If you take him off everything he’s likely to have rebound siezures. Also, he’s 26! When my parents attempted to control and disburse my meds as an adult (I was abusing some) I called the police and they got in huge trouble because it’s not their property. His Dr may not have a conversation with you due to HIPAA but I promise they will almost always listen quietly. Call his Dr and express your worries. After that it’s on him. I know it’s hard, but it’s the truth. If he is addicted I’d suggest going to al-anon and working on you. I wish my parents had. Instead they tried so hard to control me in active addiction (ha! Can’t control an addict who’s not ready for change) to the point that it drove a huge wedge unnecessarily. .
  • amber thornton
    hi guys, unfortunately I have become a victim off clonazepam addiction alongside morphine, Tapentadol (is the weakest opioid so I’ve been told and aka palexia not the slow releasing one the immediately fast released one ) I feel like I’m in a trap and have countless times tried so hard to not let the drugs beat me, I felt positive every time I begin the detox and longest I’ve gone is a few weeks, I feel like a failure to myself, thankfully as my family do not know I am taking medication, id like to keep it that way. any suggestions or advice
    • Liz
      I felt really hopeless in my addiction with opioids for years.. and never could go away bc I didn’t want my family to know.. I went to the local methadone clinic- I knew they had meetings (not NA meetings, but group meetings with counselors). I started going just once a week and just sitting down with a group and learning about cravings, triggers, how to make a plan if you are experiencing triggers, etc. helped me so much.. and just understanding it’s a process.. i always thought I knew all of my triggers until I went and then the counselor and people said things that I never even knew how to put into words before.. so you should look for these meetings.. they can help ANY drug.. I have people in my group that struggle with alcohol, xanex and benzodiazepines, cocaine and crack, percs and heroin etc etc etc. and I’ve been finally passing all my drug tests and breaking through.. my drug addiction was mainly on a schedule.. so rather than saying “I’m gunna be an entire day clean- I broke it up .. I said I won’t use before work.. and it was really hard at first and themgot easier, then added a second time etc etc. hope this helps and good luck..
    • Mark green
      You don’t wanna get mixed up on Xanax!! No sir. Stick with your Klonopin
      • Michelle
        Yep zanex is just anouther one to abuse no dr. Will treat my anxiety wich was the meanest thing ever so I had to buy them off the street cause i needed some relief from my anxiety or the need to get high I don’t know all I new was I needed something to Cover up the anxiety I was going threw so I took one pill and that was all she wrote I was hooked
    • Missblondbombshell
      Jesus don’t add Xanax to your trouble!
  • chris
    I am so tired of the double standards as well. yes there is an addiction problem in the US but as soon as you start targeting I’ll people like they are criminals and or changing always the way they say to take it ect ect. It makes a person feel a whole lot worse when they are doing the right thing. then treat you like a liar or don’t know what you are talking about when explaining your needs or hopes. Nothing can make a person more angry than being treated like a low life. they have, and I know this, ways to see if and where and when you are filling your own scripts that eventually they should be able to trust at least some patients at their word. Then to have your Dr turn on you when you have been doing nothing wrong, leads to more problems than the drugs themselves. sometimes.
    • Missblondbombshell
      I’ve yet to see, hear of or meet anyone with a true pain issue that has trouble getting their meds. Doctors are just trying to figure out who those people are as opposed to and millions more who are lying to abused the medication. There is no stigma for chronic pain patients. If it can’t be proven after years that you have a legit issue then you have an addiction issue.
      • D dude
        Agreed! Our healthcare system is so messed up, heck i know 2 people who get 90 lortabs a month, and sell them in 5 days at the most. But here I am, a Veteran, with PTSD, manic depression and horrible anxiety.. for being honest stating I did have a drinking problem for quite a few years, which has improved drastically with AA and other programs the last few years. The doc instantly said No we can’t prescribe an addict a benzo. I was furious, I leaned over his desk and said “I’m not a god dann pill head, I was 100% honest about I had a drinking problem years ago that I’ve improved on, I don’t smoke weed or meth. Test my piss right now, I’m just a dude with uncontrollable anxiety, feel like I have no family, and my brain runs 1000mph evey night so I sleep 3 house max. Mind you I’d already tried 6 different SSRI’s, they made feel like zombies. I’LL be otaly honest, I knew illegal, I talked to a close friend a good bit, he offered me 10/1mg Clonazepam just to try, he was specific too he said don’t go home and drink a 6 pack with this just have one at dinner, put on some tv and go to bed when your eye start going.. i felt so calm and relaxed, not “stoned”, just go. Me and the wife laid down, no head racing, she said I was snoring in less than 10 mins. Sorry I ramble, but it’s so irritating people can get 150 OXYS a month easy. But a Veteran tries to get just a low dose Benzo I truly think could help me a lot, but I’m thrown out because “you stated you abused alcohol from 2006-2013, we can’t prescribe that to an admitted addict” .. I was stationed in Germany, deployed to Italy and Korea, all we did was drink hard and work harder.
  • Missblondbombshell
    I love real honesty. Thank you. And I wish you the best.
  • Missblondbombshell
    Opiates are pain relievers. Benzos are seizure and anxiety relievers. Kratom is not going to help with a benzo addiction unless it just knocks you out hard enough that you can sleep through the withdrawal. But it’s nothing you should use to substitute getting off Xanax or Klonopin. I’m so confused about why people think this is a valid option. It’s like deciding I can drink a bunch of beer to avoid withdrawal from meth. we’re dealing with different substances that act on different parts of your brain.