YK11 VS LGD 4033 | Which One Is The Better Choice

We’re now entering heavyweight territory and believe me, once you experience the power either of these SARMs bestows you with, there is no going back.

You will not want to do Ostarine anymore once you feel the strength of YK11, trust me on that one.

Both YK11 and LGD 4033 have had a long history of usage among bodybuilders and even some professional athletes were caught dabbling with the latter SARM, the most notable example being swimmer Shayna Jack.

Just imagine how much of an advantage SARMs can give you, when professional athletes go as far as to risk their carriers taking these compounds.

Let’s explore both of these SARMs and see how they match up against each other!


YK11 is a SARM that is also classified as a steroid owing to its molecular structure that resembles steroids.

It’s very strong and potent, and low dosages seem to have a powerful effect on human users, providing a boost to muscle growth, strength and overall bone density.

Unfortunately, it has been abandoned in cellular studies and no human or animal has ever consumed YK11 under the supervision of a scientist.


Besides being a SARM, YK11 is a myostatin inhibitor which tells us that it will help out with muscle growth, as it lowers the amount of myostatin running amok in your body.

For more information about this SARM, check out my full YK11 review.

LGD 4033

LGD 4033, also known as Ligandrol in bodybuilding circles is a full agonist of the androgen receptor, exhibiting a 500 to 1 anabolic to androgenic activity – making it the most selective SARM invented so far.

There have been a few human trials so far that have shown Ligandrol to be very safe and well tolerated for consumption.

LGD 4033 chemical structure

Dosages of up to 22mgs a day have been used during these trials and little to no side effects were noted by the researchers.

The one issue with Ligandrol is the fact that it is quite suppressive of the natural Testosterone levels in our body, which means that you have to tread carefully while taking it in order to avoid a complete shutdown.

Interested in learning more? Check out our in-depth LGD-4033 review.

YK11 VS LGD 4033 – Half-Life

Ligandrol has a longer half-life than YK11, boasting numbers ranging between 24 to 36 hours.

On the other hand, you have to take YK11 twice a day as it only has a half-life of 12 hours.

Ligandrol is the more convenient option among the two, but YK11 is stronger, so if you’re up for the challenge, YK11 is definitely worth the hassle.

YK11 VS LGD 4033 – Benefits

There are a lot of pros to both of these SARMs, but what I’m interested in is how these two compare when it comes to the benefits they share.

Muscle Mass

YK11 will outperform LGD 4033 when it comes to building muscle mass. I remember putting on 15 pounds of muscle in just one YK11 cycle, which lasted only eight weeks.

Such a result would have been impossible with Ligandrol, as I had gained only eight pounds of muscle mass during my eight-week cycle.



YK11 will bestow you with more strength in comparison to LGD 4033. It simply is way more potent than Ligandrol and one should expect such a result in the first place, as YK11 shares a steroidal structure denoting its strength.

Bone Health

Both of these SARMs strengthen the bones as they build muscle mass, which avoids the inevitable joint pain that ensues when you build too much muscle in a short period of time.

Although I didn’t really notice any difference between the two when it comes to promoting bone strength, it has to be said that I didn’t feel an ounce of pain from the 15 pounds of new muscle mass that I’ve gained from YK11.

This leads me to believe that YK11 is better at promoting bone strength.


Motivation was sky high with both of these SARMs, but I felt more dominant and in control with YK11. It’s just crazy how much calmer and stoic you become once you start imbuing YK11. You feel as if everything is just going the right way and your confidence skyrockets.

The same can’t be said for LGD 4033.

Recovery Times

If you’re taking Ligandrol, you can get up to five big workouts a week without a hitch, as it is known for promoting faster recovery times.

I didn’t have the same experience with YK11, meaning that this is a trait unique to Ligandrol.

YK11 VS LGD 4033 – Side Effects

Testosterone Suppression

Interestingly enough, LGD 4033 is the more potent SARM when compared on a mg to mg basis to YK11.

However, the recommended dosage for Ligandrol is usually around 2,5 to 5mgs a day, while this number goes substantially up when it comes to YK11 consumption, with most people taking 10 to 15mgs a day.

This means that YK11 is going to be more suppressive of your natural hormones in comparison to Ligandrol and you’ll very likely need PCT for it.

On the other hand, if you’re only taking 2,5mgs of Ligandrol a day, you can avoid doing PCT as your body will naturally recover.

Water Retention

Although I have never experienced water retention in my life, when looking at these two SARMs, it’s obvious that Ligandrol has the higher incidence of causing water retention in bodybuilders.

Make sure to drink lots of water during your cycle to avoid water retention from ruining your progress.

Liver Toxicity

YK11 contains an acid methyl ester meaning that it has a methylated group added to it. This tells us that YK11 can be quite liver toxic and that one has to use liver support while imbuing it. If you’re interested in taking YK11, I suggest you read this article first.

On the other hand, studies on Ligandrol have shown that it doesn’t affect liver enzymes in human subjects, which reveals the fact that Ligandrol isn’t really liver toxic and that you have nothing to fret while imbuing it.

Testicle Pain

This one is unique to Ligandrol, but I have to mention since so many men are concerned about this side effect.

You don’t have to worry – no permanent damage is being done to your testicles.

The pain stops once you quit using Ligandrol and it doesn’t occur in every user.

YK11 VS LGD 4033 – Results

The results you can expect from either of these compounds are going to be massive.

I’ve personally gained around 15 pounds of muscle mass from YK11 alone in just eight weeks.

Ligandrol only bestowed me with eight pounds of new muscle mass, meaning that YK11 outperforms it by seven pounds, which is quite impressive.

Speaking of strength, YK11 made me feel stronger and more powerful compared to Ligandrol. If you’re after strength, you will want to settle with YK11.

The one thing Ligandrol excelled at were the enhanced recovery times. I remember having the physical capability of going to the gym every day, without any pain or soreness.

The same can’t be said for YK11.

All in all, the results from both of these SARMs were amazing, but if I had to crown a winner, I would definitely go for YK11 – it simply is the stronger SARM as it is taken in higher dosages.

YK11 VS LGD 4033 – Pricing

YK11 and LGD 4033 are very similar when it comes to pricing, with Ligandrol being a bit on the cheaper side.

What has to be said is that most legitimate vendors are not going to be carrying LGD 4033 anymore, because of trademark issues.

Some vendors, like science.bio (sarmguide10 for 10% off), sidestepped copyright issues by simply changing the names of their products.

So instead of buying LGD 4033, you will be purchasing LGD4, which is basically the same thing.


To conclude this article, I will just say that both of these SARMs are very strong and if you’re a newbie reading this – I wholeheartedly recommend that you settle for something less potent, like Ostarine. 

Both of these SARMs will suppress you and I recommend that you get your bloods done pre, during and post your cycle, to determine if you need PCT and to see just how much these compounds changed your hormonal values.

Remember to handle SARMs responsibly and you’ll surely reap the vast benefits they bring to the table!

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