Research Pharma YK-11 Pro – 5mg x 60 (Discontinued)


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Research Pharma YK-11 Pro is a relatively new compound. It is a Partial Androgen Receptor Agonist (PARA), so it is not a true SARM. Instead, it is often classed as a Myostatin Inhibitor which is where its real strengths lie.

  • 5mg x 60 Research Pellets
  • Absorb Core base to improve bioavailability and extend the half-life
  • Piperine 5mg for improved absorption
  • Enhances muscle mass via myostatin inhibition
  • Increases muscle building with fewer side effects than prohormones
  • A safer alternative to steroids
  • Faster muscle growth than any natural test booster
  • Reduces muscle tissue breakdown when in a caloric deficit
  • Rapid gains in strength and power
  • Molecular structure mitigates the androgenic effects associated with steroids
  • One of the most potent SARMs ever invented
  • No hepatoxicity so safe to stack with other SARMs or prohormones

The Pro version of YK-11 contains an “Absorb Core” base to improve bioavailability and to extend the half-life of the compound, making it one of the strongest and most efficient on the Research Compound market.

Results to Expect From Research Pharma YK-11

Positive reviews of Research Pharma YK-11 Pro report that it greatly increases muscle mass and its effects are seen in as little as a week. Some users report no side effects at all or very mild testosterone suppression. However, these claims are clouded by the fact that people use different dosages, cycle lengths, or stack YK11 with other SARMs.

Bodybuilders have experimented with YK11 in both bulking and cutting. Allegedly, YK11 is useful in bulking because it builds a lot of lean muscle in a short amount of time. Others have taken advantage of YK11’s ability to burn fat and harden muscles by using it in cutting cycles.

How YK-11 Works

Myostatin is the body’s braking system for the formation of muscle tissue. If these breaks are removed, then the effects on physiology can be increased. This study on YK11 shows significant anabolic effects on both muscle and bone tissue.

This makes YK-11 one of the most interesting Research Chemicals come to the market in recent years. It is an ideal compound choice if your research is linked to the effects of Myostatin on other Research Chemicals.

Is YK-11 a Steroid?

YK11 is a steroid made by directly altering the chemical structure of DHT. In contrast, all other SARMs have a nonsteroidal structure. YK11 and SARMs work differently in the body and may have different side effects.

YK-11 has a very unique structure which shares more in common with steroids than it does with SARMs.

Because this class of drugs is so new, no established naming convention exists. Based on its activity and chemical structure, it may be more appropriate to call YK11 a synthetic steroid rather than a SARM.

Research Pharma YK-11 Pro Dosage

Administer 10mg per day.

Administration Course Length: 8-12 weeks followed by PCT.

If negative conditions occur stop research immediately.

This is a supplement that is strictly for males aged 21+ with a solid background of training who are now seeking to embark to a higher level of muscle mass and strength.

Do NOT exceed the recommended administration dosages in any 24 hour period.

YK-11 Side Effects

YK11 may potentially be toxic to the liver. However, some users reported doing blood tests during cycles of YK11 and initial results didn’t indicate abnormal markers of liver damage. We would recommend using liver support throughout your cycle.

Mild testosterone suppression has been reported. To be on the safe side, almost all bodybuilding resources recommend post-cycle therapy (PCT) after a cycle of YK11.

Other reported side effects include:

  • Increased aggression
  • Joint pain
  • Low energy
  • Mild testosterone suppression
  • Hair loss
  • Mild acne

Research Pharma YK-11 Pro Contents

YK-11 5mg x 60 Research Pellets
Pellet weight 166mg +/-5%

Contents per pellet:
YK-11 5mg
Piperine 5mg
Naringin 12.5mg
DiCalcium Phosphate 60mg

Binder: Microcrystalline Cellulose
Blue colouring
White colouring

Note: YK11 is for sale on this site for Research Purposes only. By purchasing from this site, you are agreeing to use this compound for Research Purposes.

Additional information

Weight 60 g


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