Also known as MK-677 or Nutrobal, Ibutamoren is a potent growth hormone secretagogue. Contrary to popular belief, MK-677 is not actually a SARM (selective androgen receptor modulator) but is often classed into the same category.

MK-677 is actually a growth hormone secretagogue and a selective agonist of the ghrelin receptor. It's different to HGH and growth hormone peptides because of its selective nature, as well as the fact that it does not need to be injected.

Like most of its SARM siblings, Ibutamoren was created for the purpose of preventing muscle wasting and catabolism, making its effects highly advantageous and sought-after in the bodybuilding world.

And that's not without good reason...

MK-677 Nutrobal Ibutamoren

How Does MK-677 Work?

Nutrobal works by targeting the pituitary gland and increasing the amount of growth hormone it releases. This, in turn, can help the body develop muscle and strengthen bone density.

Although the specifics are a little more complex, essentially MK-677 selectively binds to Ghrelin receptors (GHSR) and mimics the natural process. In short, the supplement causes a significant boost in this particular growth hormone without affecting any others.

More significant to the bodybuilding world, Ibutamoren does not affect the body's cortisol levels, which means the immune system is not compromised and recovery times are unaffected.

Ibutamoren History

Like most SARMs, MK-677 was first devised to combat muscle wasting conditions and in the treatment of Osteoporosis. However, as word spread about its potential benefits in the bodybuilding world, Ibutamoren came onto the global gym radar.

Benefits of MK-677

How To Take MK-677

Unlike steroids or peptides, Nutrobal is selective in the way it works and in the way it targets specific receptors. This means that unlike steroids and peptides Nutrobal can be taken orally. This is a big bonus over the other supplements not least in terms of risk, but also in terms of hassle and expense.

The half-life of MK-677 is 24 hours so it is best taken once per day; there is no need to split the dose.

For best results, it's recommended to take MK-677 first thing in the morning. If taken at night, some users may find that it can disrupt sleep due to an increase in hunger levels.

Mutagenic Labz MK-677 Nutrobal Ibutamoren

Ibutamoren MK-677 Side Effects

From the limited studies that have been conducted and the anecdotal evidence that does exist, it's reasonable assertion that there are no significant side effects associated with MK-677.

Some users report an increase in hunger levels at higher doses (although this may not necessarily be a negative aspect, for some). Any hunger should subside after 2 weeks as your body adjusts.

Some people will experience an increase in vivid dreams, which again, may not be a negative aspect.

Some may experience slight water retention but this can be managed by staying hydrated and increasing the intake of potassium. Water retention will usually subside after 2 weeks as your body adjusts.

Ibutamoren Dosage

The evidence that does exist suggests daily doses ranging somewhere between 10mg to 30mg. However, there is no clear evidence to suggest higher doses of Ibutamoren equate to more dramatic effects. Therefore we would suggest keeping the learning curve shallow, starting with 10mg and increasing up t 25mg for optimal results.

On average, results should manifest within three or four weeks alongside a gradual, yet visible increase in fat loss, beginning after a fortnight.

In conclusion

Nutrobal is known to stack well with other SARMs, prohormones, peptides and steroids, and the body seems to have a reasonable tolerance for it.