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GW 501516 (Cardarine)

Chemical Name: C21H18F3NO4S2
Other Name(s): Cardarine, GW50156, Endurobol
Half Life: 20-24 hours

What is GW 501516 (Cardarine)?

GW 501516 (or Cardarine), is a research chemical developed in the 1990s to prevent and cure tumor formation in the colon, prostate, and breasts. Studies done in the early 2000s have found that GW 501516 and other PPAR agonists have also been able to stop metabolic disorders such as obesity and diabetes through specific gene expressions.

As research continued to grow, bodybuilders quickly caught on to GW 501516, calling it “the ultimate endurance enhancing supplement.”

Plus, Cardarine’s ability to burn off excess fatty tissue, enhance recovery, and dramatically increase endurance has made this product a staple in every athlete’s cycle and PCT. With no harmful side effects found in the past 20 years, no wonder why GW 501516 has become a legend in the world of sports and athleticism.

Let’s take a closer look…

How It Works

GW501516 is is a PPARδ agonist and NOT a SARM, but does work in very similar ways. In this case, GW 501516 targets the androgen receptors that stimulate glucose uptake and skeletal muscle tissue. Currently, it is being suggested as a potential treatment for obesity by rapidly melting through what’s called “fatty acid oxidation”.

Also, Cardarine is said to increase HDL by an average of 79% (good cholesterol) and decrease LDL (bad cholesterol) in current Phase II trials.

These help increase your HDL levels from an enhanced expression of the cholesterol transporter ABCA1.

The Benefits of GW 501516

The benefits of Cardarine seem to be endless, both in medical science and in the gym. Many studies have been done on GW 501516 showing numerous positive effects during the trial, despite minimum side effects.

That is part of the reason why Cardarine has recently become so popular.

Below is a list of the most powerful benefits that you could experience while taking a cycle of GW 501516 (compiled from much research and study)

The Ultimate Endurance Supplement

GW 501516 is literally the best it gets when it comes to endurance, energy, stamina, and performance enhancement of any kind.

It is used by elite athletes for a reason, from cyclists to elite bodybuilders. In fact, WADA has even added GW 501516 to their list of banned substances because of its competitive advantage.

You can expect insane levels of intensity in the gym, shorter recovery times, and be able to bust through plateaus like never before.

Also, the energy you get from Cardarine is not experienced as jittery or anxious. It’s not a stimulant, and you won’t crash hours later.

In fact, many users even report feeling an overall sense of well being and calmness.

Some of the other benefits include:

  • Rapidly melts fat and NON-catabolic;
  • Provides noticeable results on the first dose;
  • The ability to run for as long as 8-12+ weeks;
  • Is versatile and can be stacked with anything;
  • Can be used while cutting OR bulking;
  • No side effects, liver toxicity, or suppression have been reported;
  • No need for a PCT.

Cardarine: The Cure for Obesity?

The primary role of GW’s ability to rid the body of unwanted fatty tissue is almost LEGENDARY. The chemical compounds in this particular PPAR agonist functions in the differentiation of adipocytes.

Much like growth hormone, GW501516 generates proinflammatory markers in adipose tissue and decreasing the activity of genes involved in lipogenesis. This means that the body is able to block fatty acid chains from forming and being stored as fat.

A study from Scientific Reports published in 2015 stated:

“GW501516 acts on PPAR beta cells that exclusively use body fat as energy in the same way the body would when going through “starvation mode”.

The study is quoted stating: “physiological and pathophysiological functions of PPAR and generated novel strategies to treat metabolic diseases”.

The activation of these particular genes in the body has been seen to burn body fat at such an alarming rate that it is being coined “the cure to obesity”.

There were absolutely no adverse side effects detected in the last 20 years of study and it was extremely rare to see muscle wasting at any point during the research.

Cardarine’s Effects on Muscle Fibers

The 2015 study by Wei Chen, Ph.D. and his colleges has also found that dramatic increases in the PPAR gene in slow twitch muscle fibers increases oxygen usage and greatly increases endurance. The enhanced endurance was seen in lab mice with a normal oxygen supply and those with oxygen restrictions which provided significant evidence that GW501516 targets and enhances skeletal muscle endurance and recovery time to a supraphysiological level.


A study titled “A metabolomic study of the PPARδ agonist GW501516 for enhancing running endurance in Kunming mice” stated that BCAA were spared during trials of intense exercise which allowed the mice to have a greater rate of recovery in muscle tissue and neurotransmitters.

These rats had even lost weight while maintaining a high-fat diet, suggesting it could potentially prevent obesity and help manage weight regardless of diet or lifestyle.

Cardarine Results

This compound has a long range of proven benefits. The results you can expect while cycling with Cardarine include:

  •  Boost in energy levels: This compound helps you boost your energy levels when you are on a cutting diet. It helps you train longer and harder. You will feel the difference considerably when you are lifting as it improves your strength levels.
  •  Fat loss: Cardarine increases the rate at which stored fat is converted into energy by our body. In this way, you lose fat quickly and look leaner.
  •  Improved recovery: This compound leads to increased oxygen use by increasing the PPAR gene expression located in slow twitch muscle fibers. In this way, it improves your recovery rate and enables you to recover faster and workout more frequently.
  •  Muscle Building: This anabolic compound helps you gain considerable muscle mass. It is a must-have compound if you want to put on some good muscles. It helps in muscle growth by developing existing cells and forming new cells. You should definitely add this to your bodybuilding diet for quick results.

GW-501516 Side Effects

Not to say that there are none, but in the last 20 years no side effects have been seen by anyone studying the drug.

GW501516 has not only been tested in healthy subjects, but also those with simulated “real life” habits (such as drinking alcohol, stimulant narcotics, and the use of tobacco products). It is uncertain if there are long-term ramifications, but no research has been published stating otherwise.

This is what makes Cardarine so incredibly popular and usable over long periods of time. In certain studies, there have even been signs showing the reversal of diabetes, obesity, Dyslipidemia and many other diseases.

Liver Damage

In contrast to popular belief, GW501516 doesn’t promote damage to liver cells. The chemical has actually been known to promote healthy liver function and faster healing properties to the skin and muscle tissue. In essence, you will not heal rapidly like Wolverine from the X Men movies, but you will shorten your recovery time from scratches, blisters, and injured muscles by a significant amount.

Cardarine Cancer

There have been many forum comments expressing the concerns of GW501516 and it’s relationship to cancer and tumor development. The hypothesis for this controversy stems from GW’s ability to improve Angiogenesis in the body at an extremely high rate and the rate of cancer growth in the colons of lab mice.

This is a common occurrence among endurance athletes and children going through adolescence. Scientists had speculated that if there were tumor cells active in the body, that they would be especially susceptible to angiogenesis and cause the tumor to grow at a much faster rate. Since 2004 many experiments have been done to prove this hypothesis, but so far, all of them have been largely unsuccessful.

A study published in 2004 by the American Association of Cancer Research stated that PPAR agonists have:

…Shown to have no effect on the proliferation of colorectal cancer cells and “…under normal culture conditions, PPAR activation has no effect on cell growth”.

Keep in mind that this study was done in rats given amounts of 400 mg a day and was abused and ran for hundreds of weeks to top it all off. Time and time again this study has been refuted and shown to be deeply flawed and inaccurate.

In a 2008 experiment done on human breast cancer and colon cancer cells, not only did the PPAR agonist GW 501516 prove to be safe for use, it has proven to inhibit cancer cell growth. The National Institute of Health has confirmed without a reasonable doubt that GW 501516 inhibits a multitude of cancers in human cells.

Over a decade of research studies on human PPAR beta (the primary target of GW) has only proven a decrease in cancer cells with extended use (up to two years). The confusion for these previous allegations of cancer growth was from results published in 1996 and have long since been abandoned due to new clinical research. The chemical compound has been dosed in human PPAR for a number of years and has only provided positive results on cancer treatments, liver function, and metabolic efficiency.

In all of the human studies done so far, there were no noticeable side effects at all while running GW.

Check out some of the studies and resources on GW 501516 for more info:

Where to Buy GW 501516

Buy GW-501516

There are a lot of places you can buy PPARs as well as SARMs in the U.S. However, you really have to be careful since a lot of these companies will sell you just about anything, falsely advertising it as GW.

There has also been a recent ban of SARMs which has forced most of the most trusted distributors to shut down their operations.

I have used many different places that have remained online, but GW 501516 by is untouchable. They offer Worldwide distribution, which of course includes the US.

Its formula is based on months of research and hailed to be the strongest, purest GW 501516 on the market. It’s the only place I’ll use.

Recommendations & Dosing Guidelines for Cardarine

  • 10-20 mg per day is a sufficient dose. It is recommended to start at 10mg per day to take advantage of the host’s sensitivity to the new chemical. 10 mg a day is aimed for endurance, and the higher the dosage the greater the fat loss benefits are going to be
  • Lab mice should be given dosages 45 minutes- 1 hour before exercise.
  • GW501516 has been tested for a 2-year study and has found no decreases or stagnation in effects. Most individuals run cycles for 12-14 weeks at a time with a 4-6 week break. This is normally to coincide with a SARM cycle, but there is no evidence showing that GW 501516 needs to be off-cycled after such a short amount of time. GW 501516 was created for LONG TERM usage, so there is no reason why it shouldn’t be used that way.
  • Half-life is between 16-24 hours and should be taken at 10mg once a day or 10mg once every 10-12 hours if taken at a higher dose.
  • No PCT is needed, GW is recommended in combination with PCT if highly toxic anabolics have been used.
  • Highly recommended to use with a ketogenic diet.
  • Can be used in conjunction with anabolics and stimulants of any kind without adverse reactions.

The research conducted regarding the dosage of Cardarine is quite limited. So we still don’t have a recommended dosage for this compound. However, the average dosage taken by users is 10 ml per day. The half-life of this compound is around 24 hours, so you only need to take it once a day.  If you want to split the dose, you can take one in the morning and one in the evening.  Cardarine is taken in liquid form only, mostly via a dropper.

It is advised to take your dose an hour before going for any physical activity.  Also, some experienced users up their dose to 20 mg per day. However, make sure you don’t exceed this dose.  A typical Cardarine cycle lasts from 4 to 6 weeks.  Also, go for a proper PCT after completing your cycle to reverse all the health damage.

Stacking GW 501516

KONG 5 SARMS Compound
Read more about KONG

Stacking Cardarine means running it in combination with other compounds. What makes Cardarine stand out is it can be used with almost anything (cutting, bulking or recomping).

  • Bulking – clean up your gains and make that bulk cleaner while maintaining size.
  • Cutting – totally optimal when it comes to weight loss while holding on to muscle mass.
  • Recomping – perfect for building lean muscle and losing fat

The most common way to use Cardarine is in a triple stack involving LGD 4033 and MK 2866. You’ll have all the gains, endurance, fat loss and size gains by taking all three.

Also, you can buy GW 501516 in many of the stacks by Medfit Nutrition on Powersupps UK.

Final Takeaway

After a lot of research and personal use, there is nothing I can recommend more than Cardarine. It is the king of all fat burners and reigning champion of endurance supplements. GW 501516 has received many rave reviews from its users. One user even said “…GW is probably the closest thing in research to a perfect formula. Stamina and fat loss is unreal!…” There’s no doubt this is the Clenbuterol of PPARs.

It’s true that most athletes and professional bodybuilders simply lack the endurance and cardio levels to get the results they want. With GW, you can actually add lean mass while reducing body fat…something you can’t do taking anything else. You’ll be able to lift longer and harder, and with an intensity never known to you before. This obviously is what it takes to get results and get them fast.

What are your thoughts on Cardarine? Have you tried GW 501516 before? Tell us by leaving your comments below.


Osvaldo R

Ph.D at University of Pennsylvania
Hey I'm Oz and I'm currently pursuing a Ph.D in Cancer Bio at the University of Pennsylvania. I am currently studying and fascinated with SARMs and their relationship to cancer.
Osvaldo R

Latest posts by Osvaldo R (see all)

Let’s say we have a vile of LGD4033 that says it’s 10mg/ml. The top of the bottle collects 1cc of fluid. 1cc is equal to 1ml which contains 10mg. For everyone out there confused about chemical measurements, just fill the fluid collector attached to the cap and it will give you the minimum daily dosage.

Osvaldo R

Ph.D at University of Pennsylvania
Hey I'm Oz and I'm currently pursuing a Ph.D in Cancer Bio at the University of Pennsylvania. I am currently studying and fascinated with SARMs and their relationship to cancer.
Osvaldo R

Latest posts by Osvaldo R (see all)

GW 501516 can actually be run for up to two years. A 2016 study done by the NIH confirmed it’s safety and usage for long-term use. As for PCT, none is needed.

Load More


Grewal, Ajmer, Meenu Beniwal, Deepti Pandita, Bhupinder Sekhon, and Viney Lather. “Recent Updates on Peroxisome Proliferator-Activated Receptor δ Agonists for the Treatment of Metabolic Syndrome.” Medicinal Chemistry MC 12.1 (2016): 3-21. Web.

Shwarz, P. B., and J. H. Peever. “Result Filters.” National Center for Biotechnology Information. U.S. National Library of Medicine, n.d. Web. 04 Sept. (2016).

Chen, Wei, Rong Gao, Xinni Xie, Zhibing Zheng, Haijing Li, Song Li, Fangting Dong, and Lili Wang. “A Metabolomic Study of the PPARδ Agonist GW501516 for Enhancing Running Endurance in Kunming Mice.” Scientific Reports. Nature Publishing Group, 06 May (2015).

Stephen, Ruth L., Mattias Gustafsson, Roger Tatoud, Barry R. Marshall, Deborah Knight, and Ewa Ehrenborg. “Activation of Peroxisome Proliferator-Activated Receptor δ Stimulates the Proliferation of Human Breast and Prostate Cancer Cell Lines.” Home. N.p., 01 May (2004).

Nihvcast. “Peroxisome Proliferator-Activated Receptors PPARs Treatment & Prevention Of Diseases.” YouTube. YouTube, (2012).

Ham, Sun Ah, Et Al. “Ligand-activated PPAR Upregulates Smooth Muscle Actin Expression in Human Dermal Fibroblasts.” Journal of Dermatological Science (2015): 186-95. Pubmed. Web. (2016).

Robertson, D. G., & Frevert, U. Metabolomics in drug discovery and development. Clin. Pharmacol. Ther. 94, 559–561 (2013).

Roberts, L. D. et al. The contrasting roles of PPARdelta and PPARgamma in regulating the metabolic switch between oxidation and storage of fats in white adipose tissue. Genome Biol.12, R75 (2011).

Aguer, C. et al. Galactose enhances oxidative metabolism and reveals mitochondrial dysfunction in human primary muscle cells.PLoS. One. 6, e28536 (2011).

Qun, Z., Xinkai, Y., & Jing, W. Effects of eccentric exercise on branched-chain amino acid profiles in rat serum and skeletal muscle. J. Anim Physiol Anim Nutr. 98, 215–222 (2014).

  1. Kurt Bowden says

    I’m thinking of purchasing Cardarine, LGD and OSTARINE for my research but my subject has to have a urine etg alcohol test monthly with a very low cut off at 60ng. Could you tell me the % of ETOH in each or bottle? My understanding excess ETOH hand sanitizer will show up if used frequently.

    Kurt Bowden

    1. Chris Wallace says

      This product along with most research chemicals will contain a preservative with 70% ethanol.

  2. gary says

    i have used this and what a difference it made on the very first time using it. i took it around 30 mins before i hit the gym and the energe i had was unreal, and this is after the first dose,

  3. burt says


    1. Dana White says

      Does that mean that 20 mgs is the same as 1 ml? The dropper says “1 ml”. Is 1 ml 20 mgs?

      1. D day says

        10mg = 1ml

  4. Scubagirl says

    20 mg per ml. Says it on the bottle.

  5. J. Scrittore says

    What if any are the risks (cardiac for example) for anyone over 75 taking this product just for the potential of reducing vicereal fat (abdominal) coupled with age-appropriate exercise and diet to achieve that goal?


    1. Chris Wallace says

      Lab mice over the age of 75 days will encounter no problems with GW501516. The chemical compound does not increase the stress on the heart or blood vessels, instead it has been shown to decrease stress on cardiac cells by inhibiting added stress from overactive endoplasmic reticulum in the cardiac cells. in short, your lab mouse will be safe and will have a more efficient cardiac output.

      1. Vanessa Priddis says

        What if ones rat is over 60 and is taking anti inflammatiories? Does is it safe to combine the 2?

  6. Wimon says

    What’s the risk of going over 20 mg a day? lets say 30, 40 and 50 gr a day?

    1. Chris Wallace says

      I haven’t found any adverse side effects for high doses of GW501516 in any recent research articles; I also haven’t found any significant increases in endurance or fat loss either. I’d say until there is information supporting a higher dose, you should stay at the 10-20mg dosing protocol.

      1. Abisai says

        Do you need bloods work after taking GW

  7. Chris Wallace says

    GW501516 can actually be run for up to two years. A 2016 study done by the NIH confirmed it’s safety and usage for long-term use. As for PCT, none is needed.

  8. Chris Wallace says

    Let’s say we have a vile of LGD4033 that says it’s 10mg/ml. The top of the bottle collects 1cc of fluid. 1cc is equal to 1ml which contains 10mg. For everyone out there confused about chemical measurements, just fill the fluid collector attached to the cap and it will give you the minimum daily dosage.

  9. Chris Wallace says

    GW501516 should be given to your animal at the same time every day. This means even on rest days. Remember that this is not a pre-workout supplement, your animal should treat it with the same routine as a multivitamin

  10. Chris Wallace says

    Yes. To sell this product like a supplement or to use this product as such would be equally as punishable as anabolic steroid use and and distribution.

  11. Fat Rat says

    Freakin hillarious. Literally LOL!

    1. Herm_Rat says

      Lol, drop a sack.

  12. Rat38 says

    Hi my is being tested with ostarine currently week 3, 30mg a day the rat is very happy and strong. At what point can I add to my test subject gw1516 and s4 to the stack?

  13. Staci says

    Is it possible for GW-501516 to show up when being drug screened for a job, if so will it effect getting the job?

    1. MCap says

      No, not usually… Job drug screens are for elicit drugs like marijuana, cocaine, narcotics, etc. …however, they will show up on sport drug testing.

      1. Troy says

        What is the time frame in which one must stop in order to pass a sports drug testing?

  14. hoss says

    Just finished a month on 20mg daily…ok so first week on it i felt unstoppable i went from doing six sets to ten sets and even added more execises witch felt great as i was doing them but the after math was not so good..I lift on the heavy side and ended up beating my body up so bad the rest of this month ive been recovering? ??? Ive been hitting the steel for 5 months steady prior to this..low carbing feeling good..the last two weeks on this ive felt like crap..but did lose around 8lbs of fat

    1. Ronald says

      Did you buy this product in IRC website?

  15. Chris says

    Hi Chris, I am an endurance triathlete (full and half distance Ironman races, age grouper). 39 yrs old about 170lbs just starting training for me 3rd full distance IM. Will be down to about 160lbs by time training program is done. I’m not really looking to gain mass, but I’ve put on about 5-7 lbs of muscle the last 9 months mostly in my legs and don’t want to lose it…I’ve read the studies, I’m looking to try the GW in some form. Is the KONG product a good way to go for my needs? Ideally, I’m looking for something that will help me build a stronger base of endurance, push my limits of VO2 max and FTP, increase watts on the bike, decrease my run splits and most importantly, help me to recover quicker after heavy training blocks…Hoping to qualify for Kona in the next 5 years. Appreciate your feedback.

  16. John kusak says

    If you plan on giving this to your rates orally, would you mix with water or as is in powdered form?

  17. Pinky says

    Lol some of these people don’t get the undertone. Like really.

    So I bought mk667, rad140 and gw501516 for a stack my rat (his namr is Brain) is going to be using for the next 12 w.

    I hope he can recomp his body to a more muscular rat size. He’s more in the chubby size yet has underlying muscle. He’s been overweight majority of his little life and I feel bad for him as all the other subjects with a more healthy looking and just in general body get more attention from the female rats. I can tell he’s got the ambition to change his ways.

    Is gw501516 safe to take with rad140 and mk667? My rat will be very greatful in the end.

    1. awsdwqef says

      Killin me here LOL…..

  18. Alexis says

    This stuff sounds perfect, but does it work the same way for a girl rat?

  19. Raven says

    My rat suffered an injury and while recovering she got very fat! I have since changed her diet to a low-carb high-protein basically similar to a human ketogenic diet. My wishes are to speed up her fat loss will GW help if I increase her activity level to something similar to a cardio workout for approximately an hour 5 to 6 days a week ?

    1. Another Rat says

      From what a rat I know understands, going keto and doing a decent cardio regime this will work a treat. Stack it up with Ostarine for added muscle gains too with some resistance workouts in the rat run 🙂

  20. RA says

    This is going to sound weird but while taking this can It effect your sex drive? Also can It be In your sperm and cause a girl to have burning sensation after cumming inside of her?

  21. ratman says

    anybody have a good source for my rat? anybody use this with success…My rat is chubby as well and takes mk677 and test currently.

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