MK-677 - Ibutamoren HGH “stimulant”

It’s a SARM. I would NOT let my son take that to experiment with.

If you’re a grown arse man who knows what he’s getting into and has optimized about everything else, that’s a different story.

I'll break it down for you because you are getting a lot of misinformation, from all boards.

MK-677 is a growth hormone secretagogue, not a SARM. What it does is it tells the body to produce more HGH. It does this by acting as ghrelin (a hormone that makes you hungry). Unlike SARMs and other "Steroids" it does not stop the body from making Testosterone or HGH. So there is really no need for a post cycle therapy to restore the body's natural production after a cycle. The biggest problem is that it increases insulin sensitivity and will need to be cycled. Something like 5 months on and 1 month on is enough to counteract those effects.

MK-677 has been widely tested and used in multiple populations. It has been shown to increase muscle mass in the elderly population without changing any other factors. It is also prescribed to children who may have growth hormone insufficiency to help them grow.

Would I let your kid take it? That's not my call, and it really shouldn't be his, he's too young to really educate himself on these things. My suggestion is that you or your doctor do the research for him. There may be some good reasons for him to take it. The main reason for me would be if he was undersized for his age. At his age he is still growing and his growth plates haven't cemented in, meaning if he was on the shorter side it can help him get a little taller.

These are just the facts. As others have said, his body is producing the best mix to grow naturally at his age.

If you want links to scientific studies just let me know.

I hope this helps.

ETA: Links to some studies

https://pmc.ncbi.nlm.nih.gov/articles/PMC10272984/

https://pmc.ncbi.nlm.nih.gov/articles/PMC4205082/

https://pmc.ncbi.nlm.nih.gov/articles/PMC5632578/

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My son wants to get this. Says it’s at planet fitness and his friends are using it to build mass. Says it’s great blah blah blah.

Google tells me otherwise. Not approved for human consumption, illegally sold under “dietary supplement”
Known to contribute to long term Type II diabetes risk.
Tumor growth, etc.


Just wanted to get the board’s opinion on it.

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ok so i will prolly have a different take on this than most, gonna give you the good and the bad

I am assuming your kid is 15 at least

1) Its a grehlin antagonist working as a growth hormone releasing hormone (ghrh)

2) the release in hgh makes igf levels go up. Any rise in igf levels can affect tumors and make them grow.....this includes going through puberty normally.

3) it can affect blood sugar levels, but blood sugar levels return to normal after ceasing

4) it does cause extreme fatigue so it should only be taken at night

5) it does cause water retention



that's most of the bad things and honestly the tumor growth thing would only be a concern if you he has known tumors or cancer. it cant cause new tumors are anything of the sorts, its not like that. but any rise in igf levels can cause that, its not really a concern, the concerns come more from the fatigue, water retention and you have to monitor blood sugar levels(this is easily fixed by simply taking a glucose disposal agent and monitoring carb intake to be around the same time as your workout for the most part


now here are the pro

1) if his growth plates are open, it can be used in high doses to cause the same effects as HGH in terms of growth and elongation i.e. at high doses it can and will make you grow taller ( LINK )

this does require high dosing and its expensive AF

2) it causes extreme hunger, this is the main thing it is used for in terms of sports performance, is gaining weight. it will cause extreme extreme hunger

3) because of the increase in sleep, you will recover more




it does not really build muscle, it will not cause you to get shredded



so would I let my kid take it, absolutely so long as I knew where it was coming from, but I would only use it for 1 of the 2 things

1) i had a kid that i was trying to get to grow taller and he was tested to be on the lower end of igf levels

2) i need an appetite stimulant to get the kid to eat

it is kind of worthless unless its used for the 2 reasons above


it is technically not approved for human consumption but that is qualifying disclaimer that they must put because despite it being around for a very long time, it is just now going to phase trials with Lumos. But we know pretty much everything there is to know on HGH and the peptides that cause their release.

now if i didn't know anything about this and wasn't all into it....no i would not let my son get on it. if he didn't fit the categories i named.....no i wouldn't do that. If he wasn't an athlete...no i wouldn't.


what i would do if my kid was an athlete is I would instead do the following

1) buy PPSA lifting heavy and eating thick and use that as my meal plan guide for him

2) get him on a professional S&C style program, not send him to planet fitness to work out with his bros

3) get him on 10g of creatine a day


if you need more info on this, feel free to lmk but in your case....no i would not let my son take it as you as a dad are not knowledgeable enough about it and although technically not a SARM it is similar in some ways.



ETA: I was wrong on it shutting the pituatary gland's production of gh down. it doesnt. Learned something new

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it does not stop the body from making Testosterone or HGH

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well shite, i just went and looked. I could have sworn it was similar to GH in that it actually stopped you from producing gh while on, i was wrong. thanks for this

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increase muscle mass in the elderly population without changing any other factors

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this is true, i mentioned it didnt really increase muscle mass....that was refering to teens. and it doesnt directly but the increase in hunger and in turn increase in calories will

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It is also prescribed to children who may have growth hormone insufficiency to help them grow.

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100% and this is the future of it

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My suggestion is that you or your doctor do the research for him

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every doctor is going to say no, they have to pretty much as its not fully approved.



btw great stuff. Glad got others here that know things.

Yeah, I like the stuff as well. I'm 47 and it is definitely effective. Where do you get yours from? I used to get mine from Peptide Sciences but they are not in the market anymore. I tried some other place but it was garbage. Still looking for a reputable company. Especially one that I don't have to worry about customs.

I get mine local at a shop here in South LA. They don’t ship to my knowledge

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I get mine local at a shop here in South LA. They don’t ship to my knowledge

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Thanks for the reply. The search continues lol

Thanks. I knew you are supposed to cycle HGH. Didn’t know if MK-677 was supposed to be cycled or not.

not sure why i got downvoted for giving the background on mk677 and then saying i wouldnt do it

most kids do not need that, they need a real program and lots of food and creatine. thats it.

Prez and 777 gave you all the info you need on the stuff.

I would also add that the benefits are pretty minor. its not like being on steroids or sarms. The mass gain is not going to be huge and there is extreme risk of putting on excess fat because this stuff makes you very hungry. You need some hardcore discipline to not overeat while using mk677.