Now also available: Acetamoren MK-777
What is MK 677 (Ibutamoren)?
MK-677, also known as Ibutamoren or Nutrobal, is an orally active, long-acting growth hormone secretagogue. It works by mimicking ghrelin’s action. As a result, it increases the secretion of several hormones, like growth hormone (GH) and Insulin-Like Growth Factor 1 (IGF-1).
Ibutamoren is a unique compound because it is the only effective orally active alternative to HGH therapy.
Unlike general HGH therapy, Ibutamoren increases growth hormone levels, but it doesn’t increase other hormones like cortisol. This is a major advantage because cortisol suppresses the immune system, reduces wound healing, and impairs learning and memory.

Ibutamoren benefits
Let’s review the benefits of MK 677:
- Reduced body fat
- Increased muscle mass
- Enhanced recovery
- Increased sleep quality
- Increased hair and skin health
Reduced body fat
One of the significant benefits of MK677 liquid is that it can help reduce body fat over extended periods.
In fact, a study tested this on 40 people who volunteered for a 16-week cycle. They were closely monitored, and the study found that those taking MK 677 at 15mg a day lost 3% of their body fat over the course of 16 weeks.
This is due to the increased levels of growth hormone. It encourages the body to lose fat and instead gain muscle.
Increased muscle mass
Increased muscle mass, along with fat loss, is one of the most notable benefits of MK 677 (Ibutamoren). A study demonstrated the muscle-building effects of MK 677, where a test group received 12.5 mg per day for 16 weeks and gained 2 pounds of muscle during that time—without any changes to their training regimen or diet.
Because of this, Ibutamoren is also considered an excellent choice for use after a SARM or steroid cycle, as it can help retain the muscle gains achieved during those cycles.
Enhanced recovery
Ibutamoren boosts the levels of growth hormone (GH) and insulin-like growth factor 1 (IGF-1). This enhances recovery, so you can train more frequently.
Increased sleep quality
Probably the most pronounced effect users experience is the increased sleep quality that Ibutamoren provides.
The increased levels of growth hormone will make your sleep a lot deeper. Because of this, you will feel more rested in 6 hours than you would normally in 8 hours. You will have more energy throughout the day and feel a lot more rested.
Side effects
While MK-677 (Ibutamoren) has been extensively studied and is generally well tolerated, it does carry a few noteworthy side effects that users should understand, particularly with long-term or high-dose use.
- Increased appetite: Because it acts as a ghrelin receptor agonist, it can greatly increase appetite for many users.
- Water retention: Because of the increase in growth hormone levels, water retention is pretty common, especially in the first weeks of use.
- Potential for insulin resistance: Long-term use of MK-677 has been associated with elevated fasting glucose and reduced insulin sensitivity in some users.
Dosage guidelines
Ibutamoren is commonly used at doses of 10-25 mg per day. In research studies, a daily dose of 25 mg was administered long-term, yielding excellent results with limited side effects.
As with any substance, and especially with research chemicals, beginners are strongly advised to start with a low dose to see how their body responds.
Why buy MK-677 from HQSARMS?
If you want to buy MK-677 for research purposes, we offer MK-677 for sale in liquid form. Liquid MK-677 is ideal for most research purposes because it is easy to accurately dose and cost-effective.
When you buy MK-677 from HQSARMS, you benefit from:
- Third-party lab testing and in-house verification for purity and concentration
- Discreet and EU domestic shipping for reliable delivery
- Guaranteed delivery on all orders
- Research-grade quality formulated to meet the standards of serious laboratory work
Product specifications
| Application | A potent, non-peptide ghrelin receptor agonist |
| Form | Liquid |
| Concentration | 25mg per ml |
| Composition | 97.5% PEG-400, 2.5% MK-677 |
| Storage | Room temperature |
| Storage life | 2 years |
| 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]propanamide |
| Synonyms | Ibutamoren, MK-677, MK-0677, MK677, L-163,191, L163191, Nutrobal |
Frequently asked questions
What is the common dose for MK-677?
The most common daily dosage of Ibutamoren is between 10mg and 25mg, with 25mg considered the optimal dosage by many users. This is equivalent to 1 ml of liquid MK-677.
Does MK-677 influence testosterone?
No. Ibutamoren does not target the androgen receptor like SARMs do. Therefore, it does not lower testosterone levels.
Do I need to take a PCT after a cycle of MK-677?
No, a PCT is not necessary, as it doesn’t suppress natural testosterone levels, nor does it affect your natural production of growth hormone.







