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– Powerful Pro-Anabolic Compound
– Can be used by MALES and FEMALES!
– Increases Lean Muscle Mass
– Increases Strength & Endurance
– Promotes Fat Loss
– Promotes Recovery
– Increases Libido

SKU: OSTA Rx. Category: .

Osta Rx™ is a Selective Androgen Receptor Modulator. A SARM is exactly what it sounds like: a compound (not an anabolic steroid) which has the ability to stimulate the androgen receptor (much the same way as anabolic steroids). Osta Rx™ is an orally active (and highly bioavailable) selective agonist for androgen receptors which was shown to have anabolic effects in muscle and bone tissue. It has been shown to have no measurable effect on lutenizing hormone (LH) or follicle-stimulating hormone (FSH), but it has been shown to have some effect on prostate weight, with an androgenic potency around 1/3rd of its anabolic potency. Still, this is a good trade-off, because it’s anabolic effect has been measured to be roughly the same as testosterone. It has also been shown to produce dose-dependent increases in bone mineral density and mechanical strength in addition to being able decrease body fat and increase lean body mass.

Selective androgen receptor modulators (SARMs) bind to the androgen receptor and demonstrate osteo (bone) and myo (muscular) anabolic activity. Binding and activation of the Androgen receptor alters the expression of genes and increases protein synthesis, hence builds muscle. So in essence, SARMs such as Osta Rx™ causes muscle growth in the same manner as steroids, however unlike testosterone and other anabolic steroids and prohormones, SARMs (as nonsteroidal agents) don’t produce the growth effect on prostate and other secondary sexual organs.

Osta Rx™ in particular exerts its anabolic effects on muscle tissue almost exclusively. So not only does it represent a new potential treatment option for a wide spectrum of conditions from muscle wasting diseases (from age-related to AIDS or cancer-related), but is also has immense potential for muscle building for Bodybuilders, fitness, athletes and an agent to minimize atrophy during recovery periods from serious surgery or similar situations.

What are SARMs?

  • SARMs are Selective Androgen Receptor Modulators
  • SARMs exhibit similar properties to anabolic steroids without the side effects
  • SARMs are currently in advanced stage tests to treat a number of ailments

Biological Activity of MK-2866:

MK-2866 is an androgen receptor modulator (SARM) with anabolic activity. Lack of PSA increases in men and hair growth in women further corroborated selective anabolic effects of Mk-2866. Mk-2866 also resulted in a dose-dependent decrease in LDL and HDL cholesterol levels, with the average LDL/HDL ratio for all doses remaining in the low cardiovascular risk catergory.

As a research chemical, Mk-2866 belongs to a class of chemicals known as SARMs or selective androgen receptor modulators. SARMs create selective anabolic activity at certain androgen receptors and not others, hence their name. Compared to testosterone, the sex hormone, the advantage of SARMs such as MK-2688 is that they do not have androgenic activity in non-skeletal-muscle tissues. MK-2688 is undergoing clinical trials for and may eventually be medically indicated and approved for prevention of cachexia, atrophy, and sarcopenia primarily in the elderly and sick population.

The clinical capability of SARMs is expected to be more broad and diverse than anabolic/androgenic steroids like testosterone, which are almost never a first choice for treatment. Testosterone is considered unsuitable because their androgenic activity is systemic, meaning that undesirable side effects such as virilization in women, left ventricular hypertrophy in patients receiving doses exceeding a certain level, and various other effects that are difficult to prevent are common place. Testosterone and other androgenic anabolic steroids (AAS) are very effective at preventing muscle-wasting as well as increasing appetite and physical strength in humans and animal test subjects. However, AAS have a specific set of side-effects related to their non-specific androgen receptor activity that makes them contraindicated in many cases where they would otherwise be useful. Additionally, testosterone is subject to enzymatic conversion to a number of other bioactive hormones such as estrogen via the aromatase enzyme and DHT via the 5-alpha-reductase enzyme. While additional drugs may be prescribed to lower aromatase and 5-AR, or to minimize the side effects of AAS in some other fashion, testosterone is primarily only indicated for male hormone replacement therapy due to the fact that it is a problematic and complicated compound to use for its androgenic properties and the side-effects can vary greatly from individual to individual. Even primarily-anabolic AAS such as oxandrolone (Anavar), which are often used in terminally ill patients, do not entirely circumvent androgenic and other problematic side-effects.

Mk-2866 exerts its anabolic effects on skeletal muscle tissue almost exclusively, and therefore represents a new potential treatment option for a wide spectrum of conditions from age-related muscular atrophy (sarcopenia), AIDS or cancer-related wasting/cachexia, and even an agent to minimize atrophy during recovery periods from serious surgery or similar situations. It is effective in not only maintaining lean body mass (LBM) but actually increases it:

SARMs vs. Testosterone


  • Increase lean muscle mass
  • Increase strength
  • Increase bone density
  • Can be taken orally


  • Causes hormone shutdown
  • Causes Balding
  • Causes Toxicity
  • Causes acne/oily skin
  • Requires Injecting

In Detail

When anabolic steroids (like testosterone) are added to your system hormone levels rise causing and imbalance, the body notices the surge and shuts down production of naturally occurring testosterone and other hormones. This is not the case when using SARMs. Due to the fact that the system is not flooded you body continues to produce its own hormones without the peaks and troughs associated with anabolic steroid use. In the case of SARMs the receptors which respond to testosterone are “excited” and believe there is more testosterone than there is. Your body responds as though there is more testosterone but does not shut down its own production nor does it produce the side effects associated with elevated levels that steroids can cause. In other words you get the anabolic effects without the side effects. This means NO BALDING, NO ACNE, NO SHUTDOWN AND NO TOXICITY

Support Ingredients in Osta Rx™

(a very important part of the formula)

Mucuna Pruriens ~ contains a very powerful neurotransmitter pre-cursor L-Dopa. Mucuna pruriens is a reputed remedy of Ayurveda in nervous and sexual diseases. Traditionally, Mucuna pruriens is commonly used as carminative, hypertensive and hypoglycemic agent. Mucuna pruriens has been found to contain L-DOPA, 40 mg/g of the plant. The plant/seeds contain the bioactive alkaloids mucunine, mucunadine, mucuadinine, pruriendine and nicotine, besides B-sitosterol, glutathione, lecithin, oils, venolic and gallic acids. Studies in experimental model show L-Dopa also helps in the reduction of cholesterol and blood sugar levels.

L-Dopa is an amino acid that converts into dopamine. Dopamine is an essential component of our body and it’s required for proper functioning of the brain. Research discovered the body converts the amino acid tyrosine into L-dopa; L-dopa is then converted into dopamine. Without the neurotransmitter dopamine to serve a damping effect on neural transmissions, muscles become tense and tremble.

Benefits of Mucuna Pruriens L-Dopa:

-Improved sleep (promotes deep sleep)
-Reduced bodyfat & decreased cellulite
-Improved skin texture & appearance
-Increased bone density and reversal of osteoporosis
-Increased lean muscle mass
-Improved mood and sense of well-being
-Enhanced libido & sexual performance
-Increased energy levels
-Improved cholestorol profile & regeneration of organs (heart, kidney, liver, lungs)
-Dramatically strengthens immune system

Mucuna: Human Growth Hormone

L- Dopa contains natural secretagogues which may support the body’s ability to stimulate the natural release of growth hormone. The blood carries the dopamine into the brain, where it naturally increases HGH production from the pituitary gland. The increased dopamine levels also optimize the production of other hormones, including testosterone, leading to increased sex drive and improved sexual performance for both men and women, beneficial in stimulating muscle growth, as well as burning fat from fat cells.

Fenuside ~ is a testosterone booster containing Fenuside saponins, extracted from the herb Fenugreek (Trigonella foenum-graecum). Fenuside is designed to boost testosterone levels, muscle size and sex drive, and is considered one of the very latest testosterone boosters in the sports supplement market. It is important to note that there are over 100 natural chemicals in Fenugreek, but it’s only standardised Fenuside saponins that are proven to offer bodybuilders, gym users and athletes beneficial effects on muscle size, testosterone levels and body composition.

The fenuside saponins found in Fenuside are designed to support hormone levels and act as a powerful but safe testosterone booster in individuals desiring fast and noticeable enhancements in muscle size, strength and performance. The supplement is useful for strength and power athletes, body builders, and serious gym users.

Research suggests that Fenuside mechanism of action is initially as an adrenal cortex stimulator, subsequently activating the hypothalamus and boosting natural production of corticotropin releasing hormone (CRH). CRH switches on the powerful pituitary gland, enhancing production of the key adrenocorticotrophin hormone (ACTH). ACTH is a potent stimulant on the adrenal cortex to increase androgen synthesis. Because androgens are precursors to Testosterone and possess “Testosterone like activity”, Testofen naturally supports the activity of the luteinizing hormone, acting as a testosterone booster.

Horny Goat Weed ~ Icariin is the active element of Epimedium Extract (also commonly known as Horny Goat Weed Extract) and this ingredient when extracted to high purity’s is an exceptionally powerful nitric oxide and testosterone booster. Icariin is a very fine grade of extract and boasts quality’s which simply can’t be obtained from the lower grade’s of Epimedium Extract. The increased blood flow and oxygen to the muscles obtained from Icariin of this quality feeds the body with the energy and the drive required to perform and out-perform when under activities of physical and mental endurance.

Suggested Use:

As a dietary supplement, take one (1) capsule three (3) times daily in divided doses.
Use in cycles of 4-8 weeks only and take at least 8 weeks off in between cycles.
Do not exceed 3 caps daily as it can suppress testosterone levels!


Do not exceed the recommended dose or duration. This product should only be used by healthy adults at least 21 years old. Do no use if pregnant or nursing, or if you are at risk of, or being treated for diabetes, liver problems or high blood pressure. Consult your health care professional before using any dietary supplements.


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