What is YK 11?

Often dubbed one of the most powerful SARMs on the market, YK 11 is considered both a SARM and a myostatin inhibitor.

Put simply, as a SARM, YK 11 works to promote lean muscle mass, while also inhibiting myostatin, unlocking your muscle growth potential.

However, research into this popular myostatin inhibitor is rather minimal, with no human clinical trials. I know, scary stuff. So it’s quite surprising that bodybuilders eager for muscle mass rely on something untested.

How does a myostatin inhibitor work?

Myostatin works to regulate muscle cell growth and differentiation – which means that a myostatin inhibitor (such as YK 11) work to block myostatin, which may help you produce more muscle and increase fat loss.

Is YK 11 a selective androgen receptor modulator (SARM)?

Yep! YK 11 is a popular SARM. Often referred to as ‘research chemicals’, SARMs were originally designed to treat muscle wastage in cancer patients. Despite their initial medical use, YK 11 has quickly grown popular with bodybuilders looking to move away from anabolic steroids, and instead boost muscle tissue with fewer side effects.

However, it’s important to note that we all experience side effects differently, and some side effects of popular bodybuilding drugs can transfer over to SARMs such as YK 11.

Is YK 11 legal?

Completely outlawed for use in athletic competitions, YK 11 (and other SARMs) have been classified as an anabolic substance by WADA (the World Anti Doping Agency). This means that if you’re looking to train and compete, you could be tested for these types of drugs and therefore banned from competing.

Despite being primarily used for muscle wastage in a medical setting, YK 11 isn’t illegal to buy or sell, but we would advise against its use and promotion. Especially if you’re looking to compete.

What are the benefits of YK 11?

An incredibly versatile SARM, YK 11 has shown to be more effective than other compounds. This is a result of its unique mechanism, and power to:

• Have anabolic activity
• Potentially inhibit the activity of Dihydrotestosterone
• Upregulate follistatin

As we mentioned earlier, there is plenty of room for further research. However, this clinical study can help you to learn more about YK 11. Now, let’s talk about the benefits of YK 11.

Rapid muscle growth

While there is plenty of space for human studies into these ‘research chemicals’, there is evidence to suggest that YK 11 can be pretty damn powerful in building muscle gains – fast.

So much so, that many bodybuilders have compared a YK 11 cycle to a mild anabolic steroid cycle. Please note: YK 11 hasn’t been approved by the FDA for human use, with its primary use in a medical setting. That won’t stop bodybuilders wanting to get build lean body mass from using it, though!

100% Delivery 99% Purity YK11 Powder CAS 1370003-76-1

Hardening of lean muscle mass

If you’re looking for lean muscle gains, YK 11 can help create that hard, chiselled look that many bodybuilders crave. Alongside rapid muscle growth, its power to harden muscle allows its users to bulk up fast and get cut.

Many choose to combine YK 11 with another SARM designed for cutting, to promote muscle growth and lean muscle mass.

Increased strength

As well as its potent muscle building effects, YK 11 also works to increase strength. YK 11’s anabolic properties make it incredibly popular in bodybuilding circles, for both building muscle mass and strength at the same time. One study showed that mice lacking the myostatin inhibiting gene (which YK 11 seems to disable), had twice the physical strength of those with the gene.

Typical results of using YK 11 – How much muscle can you expect?

Some users of YK 11 have reported an increase of up to 10lbs over a six week period. However, this can vary from one user to the next and shouldn’t necessarily be used as a benchmark.

In order to maximize its lean muscle mass building abilities, some users opt to stack it with other SARMs – such as MK-677 (Ibutamoren) or Ligandrol (LGD-4033).

Does YK 11 have any side effects?

While YK 11 may have a bunch of benefits, including boosting muscle gains, like an anabolic steroid, there are side effects to consider.

For starters, there are currently no studies of YK 11 in humans, so any research so far has been carried out regarding a myostatin inhibitor in mice, or the use of YK 11 in a medical setting.

Since there are no current human studies, most YK 11 side effects have come from anecdotal evidence and cycle logs. Here’s what you can potentially expect from using YK 11:

The suppression of natural testosterone production

Common with YK 11 and other SARMs/steroids, is their ability to suppress natural testosterone production. This is one of the most obvious, and most detrimental side effects. Put simply, YK 11 targets androgen receptors, signalling your body to build muscle mass and shed fat mass.

However, during this process, YK 11 (and other SARMs) also increase testosterone levels, so when you finish your cycle, your body doesn’t know to continue its natural testosterone production.

Can you avoid testosterone suppression?

Firstly, let’s talk a little more about muscle cells and increasing muscle strength.

Androgen receptors control the amount of protein in our bodies, and this protein forms the main building block of our muscles. This means that when a SARM such as YK 11 comes into the mix, they activate the androgen receptors, sending messages to proteins, encouraging lean muscle growth.