MK-677 (Ibutamoren/Nutrobal): Versatile SARM for Freaky GH Levels

MK-677 aka Ibutamoren

Since the golden age of bodybuilding, athletes have long known in the power of HGH (Human Grown Hormone). High levels of grown hormone contribute to increased muscle mass, better sleep, and higher protein synthesis. Combined with a good training routine, growth hormone is pound for pound one of the most powerful muscle building compounds ever created. Unfortunately, HGH is extremely expensive and needs to be injected more than 3 times a day to be effective. What if there was a way to get the same effects of growth hormone for a fraction of the cost, and without injecting? Well now there is. MK-677, also known as Ibutamoren or Nutrobal is causing waves in the fitness industry and may the be the best thing since sliced bread.

What is MK-677?

MK-677, also known as Ibutamoren, is a Growth Hormone secretagogue. It is taken orally (unlike HGH), and produces the same effect as injectable growth hormone. Users will experience huge gains in serum GH levels along with big spikes of IGF-1 levels. Luckily, MK-677 is easy to take, requires no injections, and is extremely cost effective. In my opinion, MK-677 is one of the most versatile SARMs out there, and is a great choice for bulking, cutting, and even recomp cycles.

Where to Buy MK-677

You can buy MK-677 online as a research chemical only. As of now, this is the only way to legally purchase SARMs online.

Also, I highly suggest buying MK-677 online from Proven Peptides. They’re one of the only companies out there that sends their SARMs to a third party company to test for purity and strength. There are a lot of companies out there selling bunk Ibutamoren in order to turn a profit on people who don’t know any better. If your product is pure, you will immediately know it by the results it brings.

Studies done on MK-677

There have been numerous studies done on Ibutamoren. All of these studies have shown similar results on human participants.

The first study, done in 1998, showed very promising results. This was a double blind study done over 28 days on a group of men. The study aimed to see how Ibutamoren effected the body’s ability to retain muscle mass in a caloric deficit. After 4 weeks, every single participant saw a huge reduction of body fat with absolutely 0 loss of muscle. Keep in mind this was done on a very restricted diet, which makes the study’s results even more impressive.

Another study proved that MK-677 was effective in increasing fat-free mass levels. Participants who received the placebo actually saw a drop of muscle levels, while the group receiving Nutrobal had an increase level of muscle mass along with a drop in fat. Check out the insane results below:

mk-677 study

Results of MK-677

As you can see from the studies above, MK-677 results in a few major changes in the body. This SARM  an be used for multiple purposes. In retrospect, you can use it year round for both bulking and cutting.

MK-677 for Fat Loss

One great result of ibutamoren is it’s fat loss ability. MK-677 results in quicker results of fat loss than dieting alone. If you’re aiming to shred some pounds, this SARM is a great choice. One of the worst things about dieting is that you will always lose some muscle along with the fat. By taking Nutrobal, you won’t lose any fat whatsoever and instead might see some muscle gains while you’re restricting your caloric intake.

MK-677 for Building Muscle

First of all, higher levels of HGH and IGF-1 will lead to increased muscle mass regardless of how your diet looks. It has been speculated that very high level bodybuilders have been using MK-677 to achieve the insane amounts of muscle growth that happens in the off season between bodybuilding shows. Because it is so cheap to buy, many athletes choose to run it for long periods at a time (6-8 months). It is extremely effective at reducing recovery time and giving you that “alpha” feeling in the gym. Strength gains happen quick and are substantial.

Sleep Quality, Hair, Skin, and Nails

But that’s not all. Since MK-677 boosts levels of both growth hormone and IGF-1, users will experience better sleep quality as well. Sleep is a huge factor in how well you recover and how much gains you’ll achieve. Higher HGH levels will lead to better skin, hair, and nails as well. It’s really as good as it gets!

Best Dosage for MK-677

By now you’re probably ready to start implementing this fantastic SARM in your next cycle. You will want to make sure that you’re dosing it properly to achieve the results you want. If you dose it too low, you might be a little underwhelmed. Dose MK-677 too high and you will start to experience some mild, but annoying, side effects.

The best dose for MK-677 is around 20mg per day. You can take it with or without food.

What is the Half Life of MK-677?

MK-677 has a half life of 24 hours. What that means to you is that you only need to dose it once per day. Peak plasma concentrations happen about 8 hours in and will continue to build with each daily dose you take. This is another huge advantage of using MK-677 instead of HGH. Instead of injecting 3 to 5 times a day, you only need to take one dose a day and you take it orally just like other supplements.

Before and After MK-677 Pictures

Here are some before and after pictures from users who took MK-677. I looked online for some MK-677 logs and was able to find these astonishing photos. Check these out:



As you can see, the results are pretty insane. Users of this SARM can expect to lose 5-10lbs of body fat and gain a significant amount of muscle in the mean time. If you’re really looking to gain a lot of muscle while on cycle, consider stacking it with LGD-4033.

Side Effects of MK-677

There are not many MK-677 side effects that typically occur, but there is one main one that you should know about. It is referred to as “moon face”. It happens with real growth hormone injections along with Nutrobal. When your body has an excess level of growth hormone in the body, it will be retaining more water than normal. There is a remedy for moonface, and it’s called dandelion root. You can buy it on Amazon or at major supplement retailers as well. I highly suggest lowering your sodium intake while on Ibutamoren as well. Higher sodium levels will only increase your chances of getting moon face. If you keep your dose at 20mg or less, you should be good. If it gets unmanageable, you can always discontinue running MK-677 and switch to a different SARM.

My MK-677 Review

I personally took Ibutamoren of 16 weeks in order to evaluate how it affected my body. First of all, I noticed an immediate increase in sleep quality. Each day I felt well rested and ready to face the day. Next, I started seeing an increased level of strength in the gym. Every set I did felt light and I had insane amounts of energy in drive. Finally, I started seeing huge increases in muscle mass, and my belly tightened up a lot. I felt that over 4 months, I probably gained around 5lbs or muscle and lost a few pounds of fat in the process.

Commonly Asked Questions

Here at 101Sarms, we want you to be as educated as possible before you decide to start taking SARMs. Below you will find a list of commonly asked questions I get regarding Nutrobal. I will do my best to update it as more questions come in.

Do I need a PCT after taking MK-677?

No, you do not. This SARM does not affect your HPTA system so therefore you do not need a post cycle therapy.

What’s better: MK-677 Capsules or Liquids?

I ALWAYS recommend taking a liquid over a capsule or pill. The reasoning behind this is straightforward. SARMs can be incredibly unstable in dry form, and they hold their concentration better when kept sustained in a solution like the ones that Proven Peptides sells.

Should I take MK-677 in the Morning or at Night?

This is completely up to you. As I said, Nutrobal has a long half life. It is not a short acting compound.  It really does not make a difference. Whatever is more convenient with you will work just fine.

What’s the Best Cycle Length?

Most people do an MK-677 cycle length of 12 to 16 weeks. Some bodybuilders are taking it year round with no problems. There have been multiple studies showing no adverse effects even up to 2 years. As with all SARMs, I recommend listening to your body and seeing how you react.

What Gains Can I expect?

First of all, this all depends on your cycle goals. On one hand, bulking cycles will lead to a gain of around 5lbs per month. In some cases, this can be more. Also, cutting cycles will lead to a body fat loss of around 2% per month, and will slowly even out over time.

Final Words

In conclusion, MK-677 is a fantastic SARM for anyone looking to gain muscle and lose fat. As you see, it is extremely versatile and can be used for multiple purposes. Remember to always listen to your body and see a doctor if anything troubles you. Best of luck to you on your fitness journey!

About Jason Rios

Jason Rios is a wellness expert and University of Massachusetts grad. He specializes in male longevity, sexual health, nutrition, and sports science. He has been published in multiple journals, and interviewed on National News outlets such as MSNBC and CNN. He is a frequent contributor to some of the biggest health websites, including 101Sarms.

View all posts by Jason Rios →

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