Ibutamoren MK677-Xstream Force

  • Capsules 90x10mg
  • Batch and lot coded with publicly visible lab reports to ensure quality and transparency.
  • Free of adulterants, excipients and flow agents to ensure purity.
  • Over-weighed slightly to compensate for loss by adhesion.
  • PET single-wall blue bottle with UV resistance to minimize degradation.
  • Tamper-proof seal to ensure safety in transit.
  • Soft Gelatin Lite Blue Capsule
  • Compound mixed with Maltodextrin fine powder

100,00лв. (51.13 €)


Capsules 90x10mg

Type by

DRAMATIC MUSCLE GAINS, Growth Hormone, Ladies, Mass Gain, Rejuvenation, Strenght, Beginner


XSF Group



Buy Now

MK-677 (also known as Ibutamoren), promotes the secretion of the growth hormone (GH) and increases insulin-like growth factor 1 (IGF-1). Ibutamoren increases growth hormone levels by mimicking the action of the hormone ghrelin and binding to one of the ghrelin receptors (GHSR) in the brain. Activated GHSR stimulates growth hormone release from the brain. Clinical studies describe only the effects ibutamoren has on appetite and as expected, like ghrelin, Ibutamoren increases it. GHSR is found in brain regions that control appetite, pleasure, mood, biological rhythms, memory, and cognition.

Therefore, we can expect that ibutamoren may also affect these functions. It increases growth hormone levels with little or no increase in other hormones, such as cortisol. Cortisol suppresses the immune system, reduces wound healing, and impairs learning and memory, and it’s usually not good to have this hormone elevated.

But What actually is MK-677? What effects can you expect from its use? Does it have any side effects? What should you consider before buying? We answer these and other questions in the following article.

Ibutamoren, also known as MK-677 and Nutrobal, is a substance developed by Merck & Co. in the early 21st century. Often wrongly categorized as SARMs (Selective Modulators of Androgen Receptors) or referred to as growth hormone in pills/liquid. Ibutamoren MK-677 capsule is a substance that stimulates the secretion of growth hormone and insulin-like growth factor IGF-1.

This means that Ibutamoren does not directly affect the levels of these hormones, but only indirectly signals the body to produce more of them. It binds to the GHSR receptors and thus also affects all related functions – appetite, mood, memory, biological rhythm and cognitive ability. Ibutamoren is currently being studied for its ability to prevent muscle wasting and obesity-related diseases, increase bone density, and serve as a remedy for hormone deficiencies. Recent clinical trial results confirm reviews of people who have used MK-677 to date and prove that the high hopes placed in this substance were not unfounded.

  • 99% Pure SARMs
  • Pharmaceutical grade
  • Manufactured in the EU
  • Compounded by XStreamForce’s Pharmacologist
  • HPLC Tested
  • Free International Shipping
  • Scientific-backed advice and assistance

These products are not for use in preventing, curing, or treating a particular disease or ailments. Sold for research purposes only. Not sold for human consumption.

The benefits of MK-677 include muscle-building, a reduction in muscle wasting, better bone density, improved sleep, and anti-aging properties. It may also have nootropic effects and it can be beneficial in treating growth hormone deficiencies. Read on for a more in-depth look at these benefits.

  • Helps Build Muscles. Ibutamoren is frequently used as an anabolic substance, to increase lean body mass. It is orally active and can be taken once a day. MK-677 stimulates Growth Hormone and IGF-1 which each factor in significantly to maintaining lean body mass. Growth Hormone is believed by many to stimulate an increase in muscle size and strength and the ability of MK-677 to increase Growth Hormone production make it a popular choice.
  • Reduces Muscle Wasting. MK-677 has shown in recent studies to alleviate muscle wasting that can be caused by a decline in protein within an individual’s diet. In one study a group of healthy young adults were tested to determine if MK-677 could reverse protein catabolism and the results proved to be quite positive. As a result, MK-677 is theorized to be possibly being an effective treatment for individuals who suffer from catabolic conditions.
  • Increases Bone Density. Several studies have indicated that long-term use of MK-677 can have tremendous results to increase bone mineral density. This finding can benefit several populations including obese individuals, older adults, and women with menopause. These distinct populations can have detrimental health problems due to low bone mineral density and MK-677 has proven to be an effective treatment for many of them.
  • Improves Sleep. Since Growth Hormone is known to help improve sleep quality, it is commonly thought that Ibutamoren Mesylate can assist with sleep quality since it stimulates production in Growth Hormone.
  • Combats Aging and May Increase Longevity. As seen with other hormones in the body, Growth Hormone naturally begins a steady decline once a certain age is hit. Individuals who are aging can benefit from taking MK 677 since Growth Hormone and IGF-1 will be increased in the body among its consumption. Aging individuals who take MK 677 can improve their overall hormone profiles as they give their declining GH levels (Growth Hormone levels) a boost.
  • May Have Nootropic Effects. Since MK-677 shares a lot of similar qualities to Ghrelin and binds to its receptors, it is believed that MK 677 can have the same effects on the brain that Ghrelin has. However, there are no studies that confirm whether or not MK 677 has direct nootropic effects on the brain. Scientists do have hope though that a couple of noticeable indirect methods may explain how MK 677 can be of assistance to cognitive function. Looking back at the previous section, one method that shows promise is Ibutamoren’s ability to improve sleep quality by increasing REM sleep.
  • Beneficial in Treating Growth Hormone Deficiency. Ibutamoren can increase growth hormone, IGF-1, and IGFBP-3 levels in children with growth hormone deficiency. Furthermore, these effects are achieved without changing the concentrations of prolactin, glucose, triiodothyronine (T3), thyroxine (T4), thyrotropin, cortisol or insulin.

Even a small dose of MK 677 has a very positive effect on growth hormone levels, overall muscle growth, REM sleep quality, and much more.

However, the most common MK-677 dose is 20 mg per day. That being said, the more you take, up to a point, the more benefits you will likely get.

Here are the anecdotal MK 677 dosage guidelines:

  • Beginner: 10 mg per day
  • Intermediate: 20 mg per day
  • Advanced: 30 mg per day

Studies have shown that taking 10 mg vs 50 mg per day of MK 677 doesn’t have a significant difference on growth hormone, but it does have a significant increase on

IGF-1. This means that, if your primary concern is growth hormone increase, a moderate dosage of 10-30 mg per day of MK 677 would be just fine.

Application A potent, non-peptide ghrelin receptor agonist
CAS 159752-10-0
Molar Mass 528.662 g/mol
 Chemical Formula C27H36N4O5S
IUPAC Name 2-amino-2-methyl-N-[(2R)-1-(1-methylsulfonylspiro[2H-indole-3,4′-piperidine]-1′-yl)

-1-oxo-3-phenylmethoxypropan-2-yl] propenamide; methane sulfonic acid

Synonyms Ibutamoren, MK-677, MK-0677, MK677, L-163,191, L163191, Nutrobal
Storage Room temperature
Capsules 90x10mg
Organoleptic Profile Lite Blue fine powder, hygroscopic, acrid odor
Physical Form Soft Gelatin Transparent Capsule
Specification ≥98%
Terms This material is sold for laboratory research use only. Terms of sale apply.

Please familiarize yourself with our Terms & Conditions prior to ordering.

We make some of the highest quality products in the world, and we want to make sure we back that up with a risk-free 90-day guarantee.

If you don’t have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase.

We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance.