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YK11 VS RAD 140 | Is Testolone Better Than YK11?

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I read a ton of reports online, as I like to keep myself updated with all the new info about SARMs, which includes anecdotal evidence as well.

While doing that, I’ve stumbled upon many experiences of people stacking these two SARMs to achieve ‘marvelous’ results.

It just goes to show how much misinformation is available online; while such a stack wouldn’t necessarily kill you, it would cause a complete shutdown in your Testosterone production, which would feel awful.

RAD140 VS YK11

Both YK11 and RAD 140 are quite suppressive, with the former being stronger than the latter in terms of the suppression experienced.

With that out of the way, let’s have a closer look at these two SARMs and see how they fare up against each other.

YK 11 is a steroidal SARM that is also a myostatin inhibitor which means that it will build a lot of muscle in a short period of time. 

Myostatin is a protein that prevents muscle growth from occurring, and bodybuilders that naturally ‘suffer’ from myostatin deficiency find themselves building a lot more muscle in shorter periods of time.

We have no human or animal data from this SARM, as it has been abandoned in clinical trials. 

While cellular studies limit the scientific scope of our research, one can still find hundreds of anecdotal reports online from real users.

Check out my entire article on YK11 here.

RAD 140

RAD 140, also known as Testolone in the bodybuilding community is known to bestow the user with massive strength.

It’s also one of the best compounds for dry gains, as so many users happily live to tell the tale.

Unlike YK11, RAD 140 is a pure SARM and acts as a partial agonist to the androgen receptor.

This should technically mean that it is less suppressive than the former, but that doesn’t always need to be the case. 

RAD 140 works very well in low dosages and it has been shown to promote muscle growth in animal studies.

RAD 140 suffers from the same problem as YK11 – the lack of human studies makes it difficult to gouge the safety profile of this SARM.

Read my entire blog post on RAD 140 here.

YK11 VS RAD 140 – Half-Life

When it comes to the half-life of these two SARMs, RAD 140 vastly outperforms YK11.

You have to take YK11 twice a day to feel its full effects, as it has a half-life of only twelve hours.

Conversely, RAD 140 boasts a 60-hour half-life, which means that even if you miss your daily dosage, your blood concentration levels of RAD 140 shouldn’t fall by too much.

YK11 VS RAD 140 – Benefits

Since I’ve used both of these SARMs, I’ll inject some of my own experiences in this chapter. It will be interesting to see just how these two SARMs compare against each other when it comes to feats such as muscle growth, strength, power…

Muscle Mass

YK11 wins in this department, hands down. RAD 140 simply can’t compete with a compound whose sole purpose is to inhibit myostatin.

I’ve gained around 15 pounds of muscle in just one eight-week cycle while on YK11, while RAD 140 bestowed with around 10 pounds of muscle.


Although RAD 140 is known as ‘the strength SARM’ around bodybuilding communities, when compared to YK11, it simply fails to impress.

I felt a lot stronger and more powerful while on YK11 and the best part about all of this was that I didn’t even experience an increase in irritability or aggression.

I did feel more dominant in the gym, but it wasn’t suffused with a feeling of raw aggression, which is something that I’ve struggled with while on RAD 140.


Both YK11 and RAD 140 increase vascularity, but if I had to pick a winner, it would be the latter.

YK11 simply can’t compete with the fat loss RAD 140 bestows you with which indirectly causes more vascularity to be exhibited.


You will feel increased motivation from both of these SARMs while at the gym. Your usual weights will feel lighter since both compounds increase strength, which will further drive you to lift more and more.

I have personally felt more motivation while on YK11 as it made me a beast both inside and outside of the gym. I felt invincible, full of Testosterone, manly, and out of this world.

It was quite the experience.

YK11 VS RAD 140 – Side Effects

When it comes to side effects, the stronger compound usually takes the cake, but is that the case in this instance? Let’s find out!

Testosterone suppression

When it comes to suppression, YK11 will definitely suppress you more in comparison to RAD 140. I’ve seen many bodybuilders get away with using RAD 140 and not having to do PCT, but that all changed once they introduced YK11 to their bodies.

It’s simply too strong to recover from naturally and even I had to do a four-week PCT regimen with Nolvadex while on it.

If you’re wondering what suppression feels like, the first thing you’ll notice is the lethargy and lack of libido, which is then followed by mood swings and a decrease in motivation.


Interestingly enough, RAD 140 did make me a bit moody while I was on it. I was feeling irritable all the time, and something was always irking me.

As already mentioned, my experience with YK11 was quite different and if I had to put it in one word, it would be dominant – I felt in control during day-to-day situations and could still manage my anger.

Liver toxicity

YK11 has a methylated group added to it, which means that it’s laced with alcohol. As we all should know, alcohol is quite bad for the liver and that’s why I highly recommend using liver support while on a YK11 cycle.

With RAD 140, you will not really experience elevated AST or ALT levels, but there is always a possibility of things going awry, so I suggest that you do take a hepatic panel before and after your cycle.

Joint pain

This is something I usually don’t talk about much, but I did feel my joints hurting during RAD 140 usage

It wasn’t as pronounced with YK11 as this SARM is known for strengthening the bones alongside with giving you muscle mass.

YK11 VS RAD 140 – Results

Don’t let the nature of this article fool you into believing that one SARM is worse than the other, both of these compounds are great aids to your bodybuilding regime, and you’ll be happy you took them on.

I did gain five more pounds of muscle with YK11 in comparison to RAD 140 and YK11 bestowed me with a lot more strength.

Speaking of fat loss and vascularity, I would have to pass the torch to RAD 140, as it gave me dry gains which made my vascularity visible. It also made me lose more fat than ever!

Lastly, YK11 gave me more motivation in the gym and I felt like a monster unleashed upon the poor souls around me. It was really an awesome feeling and one that I would love every bodybuilder to experience.

YK11 VS RAD 140 - Pricing

You will usually find RAD 140 to be tad bit cheaper when compared to YK11, but the difference is negligible.

After all, you should never look at the price tag when buying SARMs and if you’re really on a budget and want to indulge in SARMs, find ways to save more money to buy quality products.

Speaking from personal experience, it really pays off when you find a reputable source that knows how to put a proper price tag on their SARMs.


In this article, we’ve gone ahead and compared two compounds that are among the strongest SARMs in existence.

As you could see, both of these SARMs have had their ups and downs, with YK11 winning when it comes to strength, muscle mass and performance, while RAD 140 caught up by dominating fat loss and vascularity.

All in all, if I had to recommend one or the other, I would say that it would be in your best interest to start off with RAD 140. It’s less potent than YK11 and you won’t feel that much suppression from it.

Remember to stay safe and watch your dosages while imbuing these two SARMs!