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  Why buy from us?

Why buy from CrazyMuscle.com?

Product Description

***Clen is now in an oral liquid format***


Why buy Clen?

  • 100% ephedrine-free (no more jittery feeling)
  • High potency with 25 mcg / mL
  • Thermogenesis raises core temperature, which increases metabolic activity
  • An effective alternative to highly toxic fat burning drugs
  • Helps you get ripped and ready for your bodybuilding competition
  • Stored body fat is burned at a much quicker/efficient rate
  • Target the last bit of excess fat for truly lean muscle all over
  • The "best fat burner on the market" for producing rapid losses in body fat!

Clen is good for

Build Lean MuscleGet Quick ResultsShred Fat

*These are badges we created to help you find the best product for your goals

What is Clen used for?

Engineered to mimic Clenbuterol effects, Clen is an ephedrine free and incredibly powerful fat burning supplement.

How do we do this?
Magic! No, just kidding.
The nucleus of the Clenbuterol molecule is separated in order to remove the hydrochloride ester. While this gives it a shorter half life, it still has extremely good thermogenic properties. Taurine powder is added to the Clen powder and suspended in alcohol.
Obviously, it isn't as strong as Clenbuterol but you won't have to worry about jittery hands, increased heart rates and restless nights that are long-term side effects of Clenbuterol HCL.
Clen is used by bodybuilders looking to get ripped for a competition or even models looking to get rid of that last bit of fat before a photo shoot. It is without a doubt the best fat burner on the market when it comes to producing a rapid decrease in body-fat.
While using Clen, one of the biggest fat loss recommendations we can give is to drink more water, eat better and sleep more. Buying Clen will not instantly drop the excess fat on your body. It will supercharge your weight loss efforts and after taking Clen, results will come much quicker. So before you buy Clen online, we would challenge you to check out our blog and make sure you get equipped with some information.
If you're curious about where to buy Clen online, we have had Clen online since 2003. Originally in tablet format, Clen was transitioned into a liquid format for a better delivery system. It has quite a strong reputation among athlete circles and competitive bodybuilders as an incredibly effective diet supplement.
Clen is not a steroid. Back in the day, ephedrine was all the craze but we all know that products with ephedrine made people feel "jittery".
There is absolutely no ephedrine in our Clen.
Here's how it works - Clen increases thermogenesis, which typically raises your blood pressure slightly resulting in an increase in your body temperature. If you already have high blood pressure, we recommend you not buy Clen and push your luck. Thermogenesis typically raises the rate of metabolism, which of course means more calories are getting burned. More calories burned means less adipose tissue (which is what makes people look blubbery).
It is important to note that when using liquid Clen, a product that increases protein synthesis is highly recommended because whenever fat is burning, protein will also get zapped from the muscle. Any of our mass gain supplements will do a good job of counteracting any potential muscle loss.

Dosage Chart

Clen Typical Schedule*

Each bottle contains 30 mL for a 30 day supply if taken as shown

BreakfastLunchPre-workoutDinnerBefore Bed
1 mL first thing in the morning

Take Clen first thing in the morning for 30 days, then take 1-2 weeks off then repeat the cycle.

Drink lots of water.

Most customers like to leave the Clen liquid under their tongue for a couple minutes followed by juice to wash the rest down.

* This chart is only a guide for a typical scenario. Please consult dosage instructions on the label of each product and adjust to your needs.

Clen is included in the following stacks:

Lean MeanThe Cutter

Before & After Results from Clen (with Pictures)

Christian Shay

Got some before + after pictures you want to share here? Submit your pictures and story.

Write your own product review

  1. Best Fat burner period

    5 / 5 stars
    Reviewed by on 7th Jul 2017

    if your ever wanting something that's easy and gets great results this is for you. Ive lost close to 20lbs using this and didn't really stray away from my current lower carb diet. One thing to keep in mind is to drink even more water than normal as this can dehydrate you

  2. Awesome

    5 / 5 stars
    Reviewed by on 23rd Jun 2017

    Love the product lost 15 pound in 2 weeks

  3. Great product

    4 / 5 stars
    Reviewed by on 17th Jun 2017

    Good product, made me sweat more and defiantly raised my temperature. Would defiantly buy again

  4. Clen

    5 / 5 stars
    Reviewed by on 14th Jun 2017

    This product arrived quickly which is a huge plus. I've been taking it for 3 weeks and am noticing that I'm starting to lean out. Very good product!

  5. Clen

    5 / 5 stars
    Reviewed by on 11th Jun 2017

    Excellent product!!! Started seeing results within weeks.

  6. Excellent

    5 / 5 stars
    Reviewed by on 8th Jun 2017

    I started using it 2 weeks ago. Since then I can see the difference in my body, lost pure body fat without losing any muscle

  7. Awesome

    4 / 5 stars
    Reviewed by on 7th Jun 2017

    Take it every morning then go together gym fasted

  8. I like it better than Clenbuterol HCL

    5 / 5 stars
    Reviewed by on 1st Jun 2017

    I've always used Clenbuterol for show prep, but every single show I crash after and feel like shit. Chalk it up to the over-excitement and adreneline from being on the stage, but this Clen doesn't make me feel horrible the next day.

    Dislcaimer - obviously it isn't as strong as the real shit but it definitely does the job without harming your body.

  9. Intense

    4 / 5 stars
    Reviewed by on 30th Apr 2017

    Hi I have only been using it for 4 days and will follow up the with results but it does get me going and keep me thinking and active so all of these will help produce the goods.

  10. so far great !

    5 / 5 stars
    Reviewed by on 28th Apr 2017

    I've taken a handful of other products and I was pleasantly surprised with the results of this one. Lost about 5 pounds within 2 weeks, paired with a clean diet. I'm using it to get rid of that last bit of fat before my show so it worked well, thanks !

  11. THE REAL DEAL.....

    5 / 5 stars
    Reviewed by on 17th Apr 2017

    I'm on my second bottle. I am stacking it with Decapoise. Legit product. It also worked really well by its self... Only advice. Lots of water. Drink all thru the day..


    5 / 5 stars
    Reviewed by on 6th Mar 2017

    As someone who began figure competition diets back in 2004, I've tried many fat burners. This one is far and away the best. Within two weeks of beginning Clen, I started dropping body fat like crazy. I changed nothing else, just added the Clen. In fact, I'm competing in 7 weeks and had to add calories and cut the Clen dose by 25% so I wouldn't peak too early. This product is the real deal. Make sure you follow the directions and drink tons of water though. This isn't a product to be messed with.

  13. best clen around

    5 / 5 stars
    Reviewed by on 24th Feb 2017

    Product was amazing! I actually lost more weight than I have ever have on any other clen. Customer service right from the beginning was fabulous!

  14. very satisfied

    4 / 5 stars
    Reviewed by on 3rd Feb 2017

    I have seen positive results when taken consistently with no side effects.

  15. Lost fat

    4 / 5 stars
    Reviewed by on 19th Nov 2016

    Been at it for a while and Clen + CLA is legit.

  16. you can feel it working

    4 / 5 stars
    Reviewed by on 19th Sep 2016

    workingi would definitely recommend this to my friends.


    5 / 5 stars
    Reviewed by on 31st Jul 2016


  18. Works great!

    4 / 5 stars
    Reviewed by on 19th Jun 2016

    Take it as directed before I go to the gym to lift. Definitely gives me more energy for a better workout! Very pleased with the Clen.

  19. great results

    5 / 5 stars
    Reviewed by on 10th Jun 2016

    I have been stacking clen along side decapoise and have had results way better than expected. In 2 weeks I have lost on the scales 5 lbs but I am much leaner and have added muscle so the fat loss is greater. Around the waist I have dropped 3 inches and arms have increased 1 inch in 2 weeks.

  20. Liquid version rocks

    5 / 5 stars
    Reviewed by on 12th Mar 2016

    I was so used to the tablets that it took awhile to try the liquid. I feel like it worked a lot faster and was a little more effective. Body gets real warm after you take it

  21. Better than hydroxycut

    4 / 5 stars
    Reviewed by on 14th Dec 2015

    I used to take hydroxycut to help keep my abs flat, but after taking clen, I don't think it really worked as good as I thought. Pretty good product for keeping the belly fat off.

  22. Lost fat fast

    5 / 5 stars
    Reviewed by on 2nd Dec 2015

    Gotta say how surprised I am with my results. I only tried it because my room mate got good results with it to.

  23. fat melted off

    5 / 5 stars
    Reviewed by on 14th Oct 2015

    This is probably going to sound fake, but man the fat literally melted off. As someone who has always found it hard to get rid of belly fat, I highly approve of clen.

  24. no jitters

    4 / 5 stars
    Reviewed by on 12th Sep 2015

    I've taken hydroxycut forever, but I hate how it always makes me feel so jittery. Clen is a good substitute and no jitters

  25. burn baby burn

    5 / 5 stars
    Reviewed by on 29th Aug 2015

    after about the 2nd week, I really started to see clen start to work. love handles have really tapered in since then

  26. solid fat burner

    5 / 5 stars
    Reviewed by on 15th Jul 2015

    This is the product i've been looking for to help shed the lower belly fat. Seeing the results really encourages you to eat better.

  27. I've tried every diet pill under the sun

    4 / 5 stars
    Reviewed by on 17th May 2015

    Gotta say the clen was one of the most effective fat burners I've ever taken. Most important thing is that I can visually see the difference in my midsection and love handels

  28. lean

    5 / 5 stars
    Reviewed by on 17th May 2015

    Another great product. Leaner and harder over a four week period. Great clean product

  29. great for females too

    5 / 5 stars
    Reviewed by on 26th Mar 2015

    Mom of 2 here. I started taking the Clen as per Maximus' recommendation and within 2 weeks, I already started to see a big difference. I've been drinking more water too and I love the new look and how I feel as of late.

  30. clen

    5 / 5 stars
    Reviewed by on 23rd Feb 2015

    Best pre contest sup on the market. I love this stuff. My secret weapon!

  31. time to cut

    5 / 5 stars
    Reviewed by on 15th Jan 2015

    I always take clen after the holidays because I always let myself go from all the eatin. Like always, works like a charm!

  32. great fat burner

    5 / 5 stars
    Reviewed by on 6th Nov 2014

    took about an inch off my waist and shrunk my love handles a bit

  33. solid cutting product

    5 / 5 stars
    Reviewed by on 6th Sep 2014

    Trimmed off my beer belly with 2 packets of Clen this summer. One thing to note for everybody reading this is that you sweat a lot so definitely guzzle that water down.

  34. my go-to fat burner

    5 / 5 stars
    Reviewed by on 15th Aug 2014

    clen is like the magic pill to shred fat. saw awesome fat loss without really having to change my diet. word of caution...drink more water while you're on it...hell, drink more water priod!

  35. I feel like it helped me

    4 / 5 stars
    Reviewed by on 24th Jul 2014

    I started eating well and doing a lot more cardio this last month but I also took the Clen. I lost 12 lbs and went from 14% body fat to 11%. I'm sure the Clen contributed to that, but I'll list 4 stars for now.

  36. perfect cutter

    5 / 5 stars
    Reviewed by on 19th Jul 2014

    Took this last year and had great results. It worked like a charm again this year

  37. Abs!

    5 / 5 stars
    Reviewed by on 16th Jul 2014

    My abs are lookin pretty sweet...just in time for a big pool party where a lot of girls will be there

  38. Fat melted off

    5 / 5 stars
    Reviewed by on 9th Jul 2014

    seriously no bullshit, went from about 14 % body fat to 11% in 1 month

  39. Top notch fat burner

    5 / 5 stars
    Reviewed by on 14th Jun 2014

    surprised by how quickly I started to drop in weight. I sweat a lot more lately, but I like the way it's working

  40. Great fat burner

    5 / 5 stars
    Reviewed by on 29th May 2014

    I was surprised at how the fat came off so easily and I didn't feel jittery. great product!

  41. Killer abs

    5 / 5 stars
    Reviewed by on 8th May 2014

    I've always been super close to seeing my full 6 pack, but finally got it with Clen. My diet is really clean, I just like to drink a lot. Didn't change much, so happy that clen could help!

  42. Dropped 10 lbs in 1 month

    5 / 5 stars
    Reviewed by on 17th Apr 2014

    Results are golden. I have a hard time losing weight but I shed 10 lbs this month. Wife approves so I'm happy!!

  43. No jitters

    5 / 5 stars
    Reviewed by on 26th Dec 2013

    Lost like 8 lbs of fat. Didn't lose any of my muscle.

  44. Great for Weight Loss

    4 / 5 stars
    Reviewed by on 20th Sep 2013

    Clen is legit it has really made my body burn more fat during my workout.
    Very pleased with the all the weight loss supplements from Crazy Muscle.

  45. The key to truly defined ABS

    5 / 5 stars
    Reviewed by on 19th Sep 2013

    Defiantly the greatest fat burner i have come across!! stack clen with decapoise to see great results and achieve the body you always dreamed about!!

  46. Go Hard and Sweat!

    5 / 5 stars
    Reviewed by on 6th Sep 2013

    Best ever product for kicking in the thermo. Started with full 5/day and altered plan to double up prior to workout. Liked this much better as it gave a hella boost for the HIIT/Cardio and found I could avoiding getting up at 2am.

    Drink LOTS and LOTS of water is my recommend. If you think you are drinking enough, drink more. My day usually includes close to 5 liters of water with my last 16 ounces right before bed as mix in my Casein 'snack'.

    Did I say LOTS of water? You'll be whizzing, but it works and if you do any traveling, really pay attention to how your body handles the flood of H2O as you could need an emergency roadside :-)

    Oh, currently checking in at 167# (2lbs from cutting goal) - down from 184.

    Have Stacked with Win and Win+D-Bol

  47. Finally see abs!

    5 / 5 stars
    Reviewed by on 28th Aug 2013

    I've NEVER been able to see my abs. I tried the Clen and emailed the staff to get some extra help. Was surprised at how helpful and knowledgable they were when it came to weight loss. They had me drink more water, eat better and change up my cardio. The Clen made me sweat a lot.

    Honestly, I didn't eat any better but I now see my abs starting to show on the sides. I'm going to start eating better because this is supe rmotivating.

  48. Sweat way more

    5 / 5 stars
    Reviewed by on 18th Aug 2013

    Started with 2 tablets a day like the site recommends and by the end of the week I was taking 5 clen tablets a day. I'm down from a 34 to a 32 pant size. Been really hittin the cardio hard this month and I think it really works.

  49. Dropped 14 lbs this month

    5 / 5 stars
    Reviewed by on 28th May 2013

    A friend of mine told me to get clen from crazymuscle. I focused only on cardio, ate more salads and dropped 14 lbs this month. Been about a week since I finished the product and weight loss slowed down a little.

  50. Really helped boost my endurance

    4 / 5 stars
    Reviewed by on 8th May 2013

    I'm a marathon runner and I think clen helped boost my endurance. The past 3 months, I have been increasing my mileage about 1 mile every week. The past month, I increased my miles by 7. Ordered another pack to see if I make any more gains.

  51. Abs much more defined

    5 / 5 stars
    Reviewed by on 24th Apr 2013

    Not as powerful as Clenbuterol, but I was pleasantly surprised with the results. Abs are much more defined. Tip for others: Drink LOTS of water while taking clen. :)

  52. Down 2 pant sizes

    5 / 5 stars
    Reviewed by on 13th Apr 2013

    Crazy fast shipping…I think it got to me in 2 days. Clen worked well for me. Went down 2 pant sizes in a bout a month

  53. Lost lots of belly fat

    5 / 5 stars
    Reviewed by on 12th Apr 2013

    Made me sweat like a mother f***** (edited for viewer discretion)!!! Def lost a lot of fat in my belly area

  54. Dropped 3% body fat!

    5 / 5 stars
    Reviewed by on 11th Apr 2013

    Just finished the product. Dropped 3% body fat in 1 month. Still can't see my abs, but for one month..pretty good results

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