Table of Contents

Open Graph Skewed Title

MK 677 is a popular research peptide – maybe the most popular – in the bodybuilding community.

It also goes bye other names including “ibutamoren”, MK-677, MK-0677, LUM-201, and L-163,191.

What is MK 677

MK 677 is an experimental research peptide used by bodybuilders for its improved aesthetic and strength effects on the body.

It seems to have a wide range of longevity & muscle building effects.

MK 677 Mechanism of Action

MK 677 works by promoting the secretion of growth hormone and insulin like growth factor (GH and IGF-1 respectively). It does this by mimicking the hormone grhelin’s action and binds to the gherkin receptors in the brain.


Because it’s a research chemical – all dosage ranges are customized to the individual.

Dosages range from 2mg to 50mg a day. 25mg seems to be the most commonly dosage level in experiments, but 10mg also seems to have significant effects.

Most people start out at 10mg and then titrate their way up based on their own tolerance and results.

MK 677 has a half life of 24 hours and is typically taken daily.

Benefits of MK 677

MK 677 has been experimented with widely in the bodybuilding community specifically.

Because it stimulated growth hormone and IGF-1, it can purportedly help maintain lean body mass and improve muscle size & strength.

Most of these studies & experiments are with active athletes – so the growth seems to compound their normal results. This has not been replicated in sedentary populations.

For obese patients – MK 677 does seem o help improve basic basal metabolic rates.

Other possible benefits of MK 677

  • Improved fat burning
  • Better sleep
  • Improved bone density
  • Possible improved longevity
  • Possible nootropic effects

Before & After Photos of MK 677

We don’t have any before & after photos (yet).

MK 677 Side effects

MK 677 seems to have a relatively safe side effect profile given its research use. However, there are some side effects that typically crop up based on overuse, wrong dosing, or overall high levels of growth hormone.

  • Increased appetite
  • Lethargy
  • Possible joint pain.
  • Insulin resistance
  • Possible increase in prolactin
  • Night sweats
  • Dry skin
  • Headache
  • Diarrhea

FAQs on MK 677

MK 677 and ED

We don’t have any research on this topic yet.

MK 677 and Brain damage

We don’t have any research on this topic yet.

MK 677 Cycle

We don’t have any research on this topic yet.

Does MK 677 Suppress testosterone

We don’t have any research on this topic yet.

Where to Buy MK 677

MK 677 is a research chemical and not approved for sale. You can find it through some online providers and through some online internet portals.

It’s important to note that MK 677 is still considered experimental and has not been widely tested.

Other peptide reviews

Share the Post:

Related Topics


Joel Runyon Joel is the founder of IMPOSSIBLE and the founder of MoveWell. Joel founded MoveWell after sustaining an injury

Read More


If there’s one thing I’ve learned in my years of experience, it’s that GHK-Cu is a game changer in the

Read More