SR-9009 (Stenabolic)

Every lifter is looking to enhance their physique, by training smart, eating the right nutrition and supplementing with clean products. SR-9009 or Stenabolic is a very clean SARM (Selective Androgen Receptor Modulator), which improves endurance, increases fat loss and boosts energy levels. It is tried and tested, so let’s see what SR-9009 is really all about…

How SR-9009 works

Increases the number of mitochondria

SR-9009 works by activating and binding the structure of protein together, and increasing the number of mitochondria within the muscle tissue.  The mitochondria are the power house within the muscle tissue cells, it is where ATP is produced and this gives us the energy for movement and survival etc. Increasing the number of mitochondria within the muscle cells can boost both muscular strength and endurance.  A study reported that SR-9009 improved energy production by 50% and this meant that the subjects could work longer at higher intensities with less effort (1).

sr9009 (Stenabolic) studies

In Vitro Metabolic Studies of REV-ERB Agonists SR9009 and SR9011

Boosts resting metabolic rate

SR-9009 increases your resting metabolic rate. This mechanism helps the body to convert any additional calories into energy before it is stored as unwanted fat. SR-9009 gives the body a similar effect of being in a constant state of exercise, even when you are resting. In addition, SR-9009 has the following health benefits:

  • An increase in glucose and lipid metabolism within the body.
  • A decrease in blood triglyceride levels (high levels are related to a risk of cardiovascular disease).
  • A reduction in the breakdown of cholesterol in the liver (again related a to a higher risk of cardiovascular disease).

This implies that a reduced amount of cholesterol is being broken down in the liver, more glucose and fats are being metabolises as a fuel source. Again, this relates to the increase in mitochondria, as these ‘furnaces’ need a constant fuel source to create energy and to function properly.

The benefits of SR-9009

1. Helps with weight loss

We have established that SR-9009, helps to keep your resting metabolism high and this is an excellent platform for weight loss. SR-9009 helps to turn glucose into an energy source, the muscle then uses this robust fuel, to power you through your work out. If blood glucose levels are controlled, then blood insulin levels are also under control. Without stating the obvious, if insulin is utilised properly it is a highly anabolic hormone. It builds muscle mass via driving the amino acids from the blood stream into the muscle tissue.

This strategy needs to be executed in the right manner and the best time to harness insulin is 20 minutes after you stop training.  A key point to consider is that muscle tissue is more metabolically active than fat; by increasing muscle mass you are naturally boosting your metabolism!

2. Boosts muscular endurance

Fatigue can be a limiting factor for many lifters!  SR-9009 is the perfect solution to remedy this, as this potent SARM binds and activates protein. It works on two levels, firstly it increases the number of the mitochondria (we have already established this). Secondly, it boosts the number of macrophages and these mops up all the defective mitochondria within the muscle cells. This fail-safe mechanism enables you to power through your work outs for a longer duration.

3. Boosts muscular strength

SR-9009 increases lifting endurance and this can lead to a boost in muscular strength.  A top tip is to train right and lift heavy (1RM 85% +) with a lower rep range (2-5), reduced sets (1-3) and with increased rest intervals (1.5+ minutes) in between sets. This strategy will reduce your fatigue levels, improve your lifting endurance and will drastically improve your strength levels.

4. Perfect for building muscle

SR-9009 is a high quality supplement that enables you to build muscle very effectively. Again, the increase in the number of mitochondria within the muscle cells, will allow you to blast through your training regime and to pack on some serious muscle mass. When combined with its fat burning potential, SR-9009 gives you a cleaner and leaner looking muscular physique.

5. Controls glucose levels

sr-9009 Controls glucose levels

SR-9009 Improves Mitochondrial Function and Exercise Capacity

Controlling glucose levels goes further than improving the aesthetics of your body.  SR-9009 has been used in the treatment of type 2 diabetes, because it reduces the amount of blood glucose and triglyceride levels (2). Controlling the amount of blood glucose does ease the burden on the pancreas to produce more insulin.

When the glucose stores are full in the body, they spill out into the blood stream, and this increases insulin production. Unfortunately, the surplus glucose is then converted and stored as unwanted body fat. Subsequently, SR-9009 will have a role to play in reducing obesity levels and reversing and/or preventing type 2 diabetes.

SR-9009 is used to counteract the impact of age related muscle and strength loss. This has a double whammy, as muscle tissue is required to absorb the blood glucose and a reduction in its capacity increases insulin levels. Therefore, there is a big connection between type 2 diabetes and the ‘total’ amount of muscle mass that you have! This is why HIIT resistance training combined with cardio is recommended to individuals over the age of 35, as this is the age when muscle loss starts to kick in.

6. Cutting

SR-9009 is often called ‘exercise in a bottle’ and it is a perfect supplement for the cutting phase. If you want to get shredded then SR-9009 allows you to train for longer, even if your body is a calorie deficient state. This combined with the natural fat loss properties of SR-9009, ensures that you can reduce your % body fat whilst maintaining your muscle mass.

7. Bulking

SR-9009 allows you to train harder for longer at high intensities. This in turn gives a quicker turn around and higher quality of muscle mass.


The recommended dosing for SR-9009 is 30mg per day, dosing 5mg every 2 hours (equals 6 times per day).  It does have a short half-life so make sure that you space the dosages out right, to get the maximum benefits from SR-9009.

Side effects

The current research indicates that there are no side effects associated with SR-9009. The main reason is because this SARM does not have an estrogenic nature. Thus, there are no reported health issues such as: water retention, bloating, gynecomastia, acne, hair loss, prostate issues, liver toxicity, cardiovascular or high blood pressure associated with SR-9009.


  1. Powers M (2005). “Performance-Enhancing Drugs”. In Leaver-Dunn D, Houglum J, Harrelson GL. Principles of Pharmacology for Athletic Trainers. Slack Incorporated. ISBN1-55642-594-5.