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CORE SARMS MK677 (Ibutamoren)supplement bottle
Lab Tested 10mg Pure
CORE SARMS MK677 (Ibutamoren)supplement bottle
2-CORE-MK677_4
CORE-3-MK677_9

Ibutamoren (MK-677)

Growth Hormone Secretagogue

4.8 (73 reviews)

£45.00

What’s Included

  • tick-icon60 capsules per bottle
  • tick-icon10mg pure MK677 per capsule
  • tick-icon2-month supply (1 cap daily)
  • tick-iconThird-party lab certificate included

Safe & Secure 3D Checkout

Lab Tested

Lab Tested

Third-party verified

Fast Shipping

Fast Shipping

3-5 business days

24/7 Support

24/7 Support

Expert guidance

Product Description

MK677 Ibutamoren is a potent, orally active growth hormone secretagogue that mimics the action of ghrelin. It stimulates the release of growth hormone from the pituitary gland, leading to increased levels of IGF-1 (Insulin-like Growth Factor 1).

CORE SARMS premium MK677 is manufactured in state-of-the-art facilities and undergoes rigorous third-party testing to ensure maximum purity and potency. Each capsule contains 10mg of pure Ibutamoren, providing consistent and reliable results for your fitness goals.

73 reviews for Ibutamoren (MK-677)

  1. Michael Brown –

    Ran 10mg of MK-677 for starters just to see how my body would respond. After about a week I started noticing some efects like appetite increase, vivid dreams, but nothing too crazy. If I would take it again then, most likely it would be a bigger dose, I would say two capsules before breakfast. Overall a great product, yall cooked with this one!

  2. Ryan Campbell –

    Best, simply the best!!!

  3. Mark Young –

    Customer support stuff was great

  4. Daniel Walker –

    After 6 weeks good results.

  5. David Lopez –

    It’s really a game changer if you can get enough food – I went from eating 1.6k calories a day to 2.5k in just 4 weeks!!!!

  6. William Harris –

    Works great!

  7. John Smith –

    Good, took 2 capsules a day for 6 weeks and gained 5 kg.

  8. James Miller –

    Honestly, I bought this just for sleep, but I’m not complaining about the size gains lol

  9. Robert Garcia –

    Fast shipping!

  10. Michael Thompson –

    I wanted to leave negative reviews because at the start I didn’t feel anything, only that I ate a lot more and slept better. I want to say that around week 3 I started seeing that I had gained size and my lifts went up. Overall good product that takes time to work.

  11. Jake M. –

    Absolutely game changer! Been using MK677 for 8 weeks and my recovery time has improved dramatically. Sleep quality is incredible and I’m seeing real muscle gains. Will definitely reorder!

  12. Richard Brown –

    I mean, it did what it said it would. Gained muscle mass with little to no fat in a relatively short time frame. My only complaint is that it took 6 to 8 weeks.

  13. Brian Adams –

    Delivery time was a bit long, but the MK itself is great. I recommend it.

  14. Joseph Martinez –

    Hmm, usually I don’t leave reviews, but my god what a goated find. It worked amazingly for sleep, appetite and muscle 5/5

  15. Jason Perez –

    Better than expected.

  16. Timothy Mitchell –

    If you want to sponsor me then hit me up I really realy love it. In just 12 weeks my weight went up by 14 kilograms.

  17. Ronald Carter –

    Super fast shipping and package was discrete.

  18. Edward Mark Nelson –

    Sori ENG is not my first language. Wanted to to say that is legit and my mother didint know about it, because the package was not branded.

  19. George Baker –

    Not much to say: it did what it needed to do, nothing more, nothing less.

  20. Thomas Robinson –

    What can I say, just mental… 100/10

  21. Kevin Green –

    This is my third time ordering from Core, and every time I receive my order in a timely manner. All three times, MK has worked wonderfully.

  22. Kenneth Scott –

    Wow, works, big W.

  23. James Anderson –

    When I took MK-677, I was taking 20mg instead of advised 10mg. The effects were really noticeable overall. At the start I didnt feel much, I mean yes a little better sleep, felt a bit more hungry. Around the second week everything hit at the same time, It was just the thing I was looking for. For the first timers I would recomend trying 10mg just to understand how the body will react. Goon product.

  24. Joshua Hill –

    Although the company is new, at least from my first order everything seems legit! MK comes in a hermetically sealed container, and currently I’m feeling great – – -I’m on week 5.

  25. Andrew Lopez –

    …. Wanted to g

  26. Paul Wright –

    Very nice!

  27. Steven King –

    Didn’t expect it to arrive, but here we are. It looks legit.

  28. Anthony Richardson –

    60 capsules are great, but it would be cool if there were 90 🙂

  29. Donald Hernandez –

    Fine.

  30. Anthony Allen –

    The price is amazing.

  31. Matthew Hall –

    Works, works.

  32. Christopher Lewis –

    Didn’t have any side effects.

  33. Charles Clark –

    Went from skinny to jacked in 12 weeks.

  34. John Taylor –

    MK-677:

    Decided to try MK-677 at one capsule a day just before bed which is about 10mg , just to see if it is worth all the hipe. After about 10 days I started eating laike an elephant, which made bulking 5 times easier. Also finally started sleeping full nights, like I was feeling energised in the morning. While in the gym I could finally feel that I was bulking and putting on muscle. Definitely would consider taking it again.

  35. Jason Phillips –

    Sleep has gotten much better

  36. Elena –

    MK-6 7 7 really has helped me improve my overall sleep quality and even appetite.

  37. Robert B. –

    After 4 weeks on MK, I feel much fuller (not water weight btw)

  38. Ben Carter –

    Wow, I am speechless.

  39. Kim J. –

    I’ve finally broken through a long plateau with it! Simply the best supplement out there.

  40. Liam Park –

    Works.

  41. John –

    My order arrived in just 4-5 days…The packaging was private.

  42. Felix Brot –

    Almost no side effects, I only eat a bit too much (it’s expressive lol)

  43. Victor –

    I started with 1/2 capsule a day (5mg) for the first 3 weeks—felt great, but didn’t really see any real effects. After week 4, I upped the dosage to full dosage (10mg / full capsule) and it made a huge difference. Almost instantly, I felt the “real MK effects”. I was almost always hungry, and sleep also got much deeper!! At around week 8, my friends started to comment that I look much bigger. Personally, I will not up my dosage.

  44. Fredrick C. –

    I’ve put on noticeable, lean muscle without feeling puffy or bloated. I went from 77kg to 84kg in 12 weeks.

  45. James Walker –

    Probably the top3 MK that I have tried.

  46. O. Thompson –

    Best.

  47. William D.Harris –

    15mg a day is my sweet spot. 10 is a bit too low, but 20 is a bit too high.

  48. Ethan Caldwell –

    I was called fake natty on it xd. I only used it for 6 weeks£

  49. Dilan Pictor –

    DPD lost my package, but customer support dealt with it within 24h. Give them a raise

  50. M. C. –

    If I left my MK outside in -24 degrees, can I still use it?

  51. Miller –

    10/10

  52. Jonny Arunger –

    Recovery felt faster and training intensity was much better as well.

  53. Martin J. –

    Will be honest, I thought that would look bloated, but somehow there was almost no water retention.

  54. Edward Miller –

    9.5

  55. Jamel –

    I eat like a pig, but damm the size gains are unreal…

  56. George Anderson –

    decent product

  57. Samuel –

    Love it. I look better than my brother, who has trained for 4 years.

  58. Luca Romano –

    Delivery is unmatched

  59. Mateo Alvarez –

    El great

  60. D. Bjorn –

    I tried taking it every day at the same time, and the results are amazing

  61. Alexei Petrov –

    Was a bit hard to swallow, but that said, in 5 weeks I really started to see results

  62. Lucas –

    No aftertaste

  63. Oliver Romano –

    abc

  64. Petrov –

    Started seeing first visible changes after week 4

  65. Henry –

    Can I travel with it?

  66. William M. –

    At first had stomach issues but after +- TWO weeks I felt great

  67. Theo Johansson –

    GooD

  68. MKlover420 –

    Better then RAD-140

  69. Benjamin R. –

    Will there be 50% less side effects if I use 1/2 of the tablet?

  70. Dubois –

    Fast shipping! less then a week

  71. Leonard J. R. –

    Decent size for the price

  72. Daniel –

    This will be my 5th purchase

  73. Sebastian Wright –

    Is it better to take capsules before or after breakfast? I take them before and they work great:D

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Whate are the Key Benefits of Ibutamoren (MK-677)?

Enhanced muscle growth

Enhanced muscle growth

Improved sleep quality

Improved sleep quality

Increased bone density

Increased bone density

Anti-aging effects

Anti-aging effects

Faster recovery

Faster recovery

Improved skin quality

Improved skin quality

Ingredients & Dosage

Active Ingredients

Ibutamoren (MK677)

10mg

Growth hormone secretagogue

Black Pepper Fruit Extract (Piper nigrum)

5mg

Enhances absorption and bioavailability

Purity & Quality

Third-party lab tested Third-party lab tested
99.2%+ purity guaranteed 99.2%+ purity guaranteed
24-month shelf life 24-month shelf life

How Does Ibutamoren (MK-677) Work?

MK677 Ibutamoren works by mimicking the action of ghrelin, a hormone that regulates hunger and growth hormone release. When MK677 binds to ghrelin receptors in the brain, it triggers the release of growth hormone from the pituitary gland.

This increase in growth hormone leads to elevated levels of IGF-1, which is responsible for many of the compound’s beneficial effects, including increased muscle mass, improved bone density, and enhanced recovery.

The compound has a half-life of approximately 24 hours, allowing for once-daily dosing while maintaining stable hormone levels throughout the day.

Key Actions

1 Mimics ghrelin hormone action
2 Stimulates growth hormone release
3 Increases IGF-1 levels

How to Use Ibutamoren (MK-677)?

Dosage

Dosage

10mg once daily

Timing

Timing

Take before bedtime for optimal results

Cycle Length

Cycle Length

8-12 weeks followed by 4-week break

Important

Important

Dietary supplement use only

Important Notes

Take with or without food. Consistent timing recommended for best results.

Frequently Asked Questions

What is MK677 Ibutamoren?

MK677 Ibutamoren is a growth hormone secretagogue that stimulates the release of growth hormone and IGF-1, supporting muscle growth, fat loss, and recovery.

Is MK-677 a steroid?

No, MK-677 is not a steroid. It does not act on androgen receptors. Instead, it naturally boosts growth hormone and IGF-1 production, helping improve muscle recovery and performance.

What are the side effects of MK-677?

Some users of MK-677 report increased appetite, temporary fatigue, or mild water retention. Experiences vary from person to person, and not everyone notices these effects.

How long before I see results with MK-677?

Most users notice improvements in sleep, recovery, and appetite within the first week. Muscle growth and fat loss benefits typically become more visible after 4-6 weeks of consistent use with proper diet and training routines.

How should I store this product, and what is its shelf life?

Store the product in a cool, dry place away from direct sunlight. Keep the container tightly sealed and out of reach of children. When stored properly, the product has a shelf life of up to 24 months from the manufacturing date.

Is CORE SARMS MK-677 tested for purity?

Yes, all CORE SARMS products undergo rigorous third-party testing for purity, potency, and quality assurance.

Does MK-677 affect testosterone?

No, MK-677 typically does not suppress testosterone levels. Its effects are centered around growth hormone pathways, not testosterone regulation. However, individual responses may vary with prolonged use.

How to cycle MK-677?

A common cycle length for MK-677 is 8-12 weeks, followed by a 4-week break. Some experienced users extend cycles up to 16-20 weeks. Consistent use during the cycle can help you achieve optimal results.

How should I take MK-677, and what is the recommended daily dosage?

MK-677 is typically taken once daily, preferably before bedtime for optimal results. A common daily dosage ranges from 10-25 mg, depending on individual goals and experience. It can be taken with or without food, but keeping the timing consistent each day helps maintain steady levels in the body.

Customer Reviews

4.84 out of 5 (73 reviews)
Sebastian Wright
2026-02-09

Is it better to take capsules before or after breakfast? I take them before and they work great:D

Daniel
2026-02-09

This will be my 5th purchase

Leonard J. R.
2026-02-08

Decent size for the price

Write a Review


Ibutamoren (MK-677)

Ibutamoren (MK-677)

£45.00
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SUPLIFY LTD,
Company Number 16723622
182-184, High Street North, Office 14700, London, E6 2JA, United Kingdom

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