MK 677: Is Ibutamoren A Potent Growth Hormone Secretagogue?

MK 677 or Ibutamoren is a growth hormone secretagogue and agonist of the ghrelin receptor being researched as a treatment for reduced levels of hormones.

It is said to increase Human Growth Hormone (HGH) and Insulin-like growth factor 1 (IGF-1) levels.

This article will support our claims and conclusions by clinical data and unbiased user reports that have tested this compound.

We will walk you through benefits, results, dosage information, side effects, and where to buy this compound.

At the time of writing, MK 677 had already gone through human clinical trials and was well-tolerated by the healthy participants (1).

MK 677 Benefits and Results

The main benefit of using MK 677 is that it raises both GH and IGF-1 levels in the body.

But, what does it mean to have increased levels of these hormones?

Well, Both Growth hormone and Insulin-Like Growth Factor-1 assist in the growth of muscle mass, recovery, strength, and performance.

This is even backed up by clinical data, as both hormones have shown to play an essential role in the regulation of muscle tissue development and maintenance (2).

When these hormones increase, a bodybuilder or athlete can benefit from this massively. The main benefit one will notice from this compound is the improved rate of recovery.

MK 677 Benefits Bodybuilding

Prolonged oral treatment with MK-677 also significantly increased the quality of REM sleep compared to placebo (3).

This is another exciting benefit as sleep and rest are critical factors in the growth of muscle tissue.

Bodybuilders often stack Ibutamoren with selective androgen receptor modulators (SARMs) such as LGD-4033 or YK-11.

The reason for doing so is that SARMs have strong muscle-building capabilities, and combined with the increased GH & IGF-1 by MK 677, a massive improvement in overall performance will be noticed.

You can buy these compounds from, they have the highest quality on the market right now.

MK 677 Dosage Data

After reviewing the benefits of using this compound, we will move on to the dosage information.

The dosage at which you’re going to run MK 677 is important because you’re going to need to know at which dosage you will experience.

According to clinical data, the optimal MK 677 dosage is between 20 to 25mg per day.

When we look at anecdotal user experiences, the average dosage also seems to be in line with the data.

MK677 Dosage

When we look at the clinical data we have available on this compound, the higher of a dose, the better the effects started to get. 

In some clinical studies, IGF-1 levels clearly increased in a dose-dependent manner (4). This is why many users often research with a higher dosage of 20 to 25mg per day.

Another thing worth mentioning is that Ibutamoren should be used for several weeks for its user to experience the benefits. The longer you use it, the more significant the results will get.

Administration of MK-677 25 mg resulted in a 60.1% increase in serum IGF-1 levels at 6 weeks and a 72.9% increase at 12 months (5).

As we can conclude from the clinical data, the longer Ibutamoren was administrated, the more IGF-1 increased. 

This is why it is generally advised to run your MK 677 dosage for more extended periods.


MK 677 (Ibutamoren) has a half-life of 24 hours, meaning dosing once a day will be sufficient.

Does MK 677 Have Side Effects?

There are a few side effects caused by the use of Ibutamoren. We found that clinical data correspondences with user experiences when it came to side effects.

According to research in which elderly subjects received daily administration of MK 677 for two years, the most mentionable side effects were (5):

  • Increased appetite (Subsided after several months of usage)
  • Water Retention (Buildup of fluids in the body)
  • Muscle soreness and pain (Only experienced shortly)

When taking a look at user experiences and reports, you will notice that these are the most common side effects.

But, in some cases, MK 677 was also causing lethargy for some users. This can be prevented by taking your dosage later on the day, preferably in the evening before bedtime.

Just as with SR9009 and GW501516, this compound does not interfere with hormones and will not require Post cycle therapy.

MK 677 For Sale

We at Nectac have tried several sites that have MK 677 for sale. Unfortunately, we quickly concluded that not every site sells a pure and quality product.

The only source we recommend buying this compound is Science.Bio. We found that they have the most potent MK 677 for sale.

We experienced the classic symptoms such as increased appetite, better sleep, and recovery while researching with it.

I must say, they’re slightly more expensive than the other options on the market, but you’ll be getting a high purity product.

And as you might already know, it’s vital to get a legitimate product for your research.

Of course, there are more places to buy it, but there’s not many we trust. That is why we advise you to check out Science.Bio, quality is guaranteed.

MK 677 Frequently Asked Questions

What should i stack mk 677 with?

Many athletes stack MK 677 with mass-building SARMs such as LGD4033 and RAD140.

Combining Ibutamoren with one of these SARMs can significantly increase size, strength, and recovery rate.

Read more about RAD140 by clicking here.

What is the best place to buy mk-677?

We are convinced that is the best place to buy high-quality MK 677. They make sure third-party testing has been done on the products they have up for sale.

You can visit the official and check the product lineup.

How long can you stay on mk 677?

Anecdotal experiences show that you should stay on MK 677 for extended periods, preferably between 3 to 6 months. This is because it takes a few weeks for it to build up in the system entirely.

What does ibutamoren mk 677 do?

According to a clinical study, Ibutamoren (MK-677) can increase Growth Hormone, energy, and fat-free muscle mass (2).

Should you take mk 677 on an empty stomach?

It’s optional to take it on an empty stomach. Taking it on an empty stomach will not enhance absorption.


MK 677 is often mistaken for a SARM, but it is a highly effective growth hormone secretagogue.

It’s gotten a lot of attention over the past few years because it’s the ability to raise GH and IGF-1 levels.

This can be beneficial for athletes that want to improve recovery rate, muscle growth, and overall performance.

Ibutamoren has to be taken for more extended periods for the results to start showing fully. Side effects can occur during usage, but it does not interfere with your body’s hormones.

Several vendors carry this compound, but we advise getting it from a reputable source such as

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