S4 (Andarine) or Acetamidoxolutamide,...
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S-4 started out as a new development for male contraceptives and showed promising results like decreases in spermatogenesis and huge boosts in male libido. For any of you who have had trouble getting your wife pregnant while on sarms…you’re welcome.
However, when researchers began experimenting on mice with S4, they discovered interesting findings about how this first generation SARM affected castrated lab mice.
Not only did Andarine increase the production of muscle mass and calcium for bone density, but was COMPLETELY SELECTIVE in its tissue growth!
As studies continued, many of these research trials resulted in astonishing outcomes creating a benchmark for even more research.
Today, we’ll take a closer look on everything we currently know in 2018 about Andarine in this writeup…
To start, let’s describe what a SARM does.
There are three type of chemicals that act on the androgen receptor (AR):
A SARM such as S-4 is a good example. S-4 attaches to the AR and sticks to it; each time the AR interacts with testosterone, S-4 forces it to produce genes that exclusively benefit muscle and bone growth. In other words, S4 is a form of SARM that attaches to the androgen receptor (AR) the same with regular androgens, the only variation is that S4 generates selective anabolic activity.
As mentioned earlier, SARMS function by tying to the AR resulting to anabolic activity. Due to this fastening and stimulation, more protein is produced which allows muscle building. S4 can trigger muscle development in the same way as steroids, but minus the same unwanted side effects.
S4 is a SARM with utmost androgenic effects and is 33% of the strength of testosterone when attaching to AR.
S-4 also increases the amount of muscle mass produced by desensitizing the AR to the individual’s natural testosterone to influence a stronger effect.
S-4 is by far the most versatile SARM ever created. Not only is it the first SARM approved for a stage 2 research study, it has become the most analyzed and investigated SARM so far. After the discovery of its anabolic potential, the primary purpose of S-4 aimed to develop an alternative treatment to age-related muscle wasting, osteoporosis, and similar symptoms of hypogonadism, or end-stage renal disease.
Aside from preserving lean body mass, S4 can also help improve it.
From a stage 1 study, S-4 has provided evidence of a 3.3 lbs increase in less than 90 days with no increases exercise or change in daily diet. An unintended side effect (or benefit if you will) is the decrease in body fat [Chen et al., 2005; Gao et al., 2005; Kearbey et al., 2007]. Decreases in body fat are dependent on the person’s genetics, but it will definitely have strong effects on the body’s ability to oxidize fatty tissue. S-4 was found to not only have a great affinity (potency in binding to androgen receptors), while also presenting greater anabolic effects than some traditional steroids [Kearbey et al., 2007].
Aside from its muscle building advantages, S4 won’t cause liver damage, can prevent gynecomastia (enlarged breasts in men) and can help boost your overall health.
Here are some of the other benefits of Andarine that are worth noting:
Once more, an early study done on S-4 provided proof of full muscle regeneration in volunteers with degenerative disorders without the use of exercise and the minimum dosage of 3mg/kg/day. Changes can be seen anywhere from 1-2 weeks. This was the very first study classified S-4 as CLINICALLY SIGNIFICANT by improving skeletal muscle strength, lean body mass, and a reduction in body fat [Chen et al., 2005; Gao et al., 2005; Kearbey et al., 2007]. Unfortunately, there are always some side effects that arise when using Because S-4 is a ligand by definition, the side effects will never be permanent even at supraphysiological dosages and can be easily avoided through proper dosing.
Unfortunately, there are always some side effects that arise when using Because S-4 is a ligand by definition, the side effects will never be permanent even at supraphysiological dosages and can be easily avoided through proper dosing. Also, Andarine follows the law of diminishing returns meaning that over time, your body will develop a tolerance and the SARM will become less effective after a certain milligram percentage. For the average person it ranges from 50mg to 75mg. there are people that can go above this range for even more amazing results or need to stay below this range because they are unable to tolerate the chemical. About 99.5% of the population should fall within the 50mg to 75mg range.
The most popular negative effects of S-4 are visual issues such as the yellow tint and difficulty adjusting to night vision. These side effects are unique to S-4 and are sometimes overblown. If these side effects present themselves, simply stop taking S-4 for two days and stay at a 5 day on/ 2 day off cycle. THESE EFFECTS ARE NOT PERMANENT! Once a ligand (such as a SARM) leaves the system, it’s effects disappear completely.
Lastly, S-4 and most other SARMs have been known to cause depression in a small population of people. This has been discovered as more of a psychological issue than a physiological issue. researchers with mice suffering from any emotional disorders need to be cautious when using this chemical.
Benefits of Andarine have been reported with dosages ranging between 25mg and 50mg 3x per day.
Unfortunately, the higher the dosage, the higher the side effects. S4 is a rare form of SARM that has a greater risk of side effects than most other SARMs.
These effects are not permanent. S4 has been proven safe and effective for cycles up to 3 months.