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Mutagenic Labz Ostagainz contains Ostarine (also known as MK-2866). This is one of our best-selling SARMs for lean muscle gains with minimal side effects. Ostarine is perfect for those who want something safer than prohormones but more powerful than a natural testosterone booster.

  • 10mg Ostarine
  • 5mg Piperine for improved absorption
  • Vegan-friendly (veggie caps are used for all Mutagenic Labz products)
  • A great alternative to prohormones
  • Clinically proven to build muscle and strength
  • Anabolic (even at doses as low as 3mg)
  • Gains of 3kg in 3-4 weeks possible
  • Targeted anabolic effects in muscle tissue only
  • Does not have any androgenic activity
  • Improves endurance and strength
  • Boosts fat loss
  • Promotes healing and injury repair
  • Powerful joint healing abilities
  • Non-liver-toxic
  • Minimal side effects

What To Expect From Mutagenic Labz Ostagainz

Ostarine’s effects are solely targeted on muscle tissue. It increases muscle strength and size very rapidly but won’t impact on any unwanted areas such as the hairline or prostate. If you use Mutagenic Labz Ostagainz over a 4-6 week cycle, you can enjoy lean muscle gains of up to 3-4kgs. These gains are supported by official research and studies.

Mutagenic Labz Ostagainz doesn’t just offer anabolic effects on your muscles, it also offers a host of other impressive benefits. Proven to have a number of health and wellness benefits, it can enhance tissue regeneration, reduce inflammation and increase fat loss. It can also improve your mood.

Mutagenic Labz Ostagainz also has anti-catabolic properties, meaning you can diet more aggressively or for longer whilst preserving your muscle mass. Retaining muscle during a diet phase is a key aspect to improving body composition successfully while maintaining all your hard work! You’ll also retain more strength so you can train harder and heavier, for longer. All leading to a positive cycle of lean gains.

Health Benefits of MK-2866

MK-2866 has a host of health benefits far beyond its muscle building and fat burning abilities. MK-2866 is renowned for its healing properties particularly joint repair and bone health. Furthermore, it helps to reduce LDL cholesterol and triglycerides which, in turn, improves insulin resistance. These are all things which can be attractive to bodybuilders looking to gain mass and strength.

Less time out for recovery (or less soreness during your next training session) means you can train more frequently, resulting in a greater workload throughout your training week. This is likely to result in greater muscle growth from the training stimulus and faster results.

In one human study on 120 healthy elderly people, Ostarine significantly improved insulin resistance and lowered blood glucose levels. In fact, the results were similar to a well-known anti-diabetic drug Metformin.

Ostarine for Bodybuilding

Ostarine is hard to rival, being dubbed as the “most well-rounded SARM” amongst its loyal fans. Most bodybuilders swear by its safety and efficacy. Most users consider it a clean compound since it helps them increase pure muscle mass and burn fat with minimal side effects. Users also claim that the quality gains from Mutagenic Labz Ostagainz are easy to maintain for the long-term. A very important deciding factor for those looking for long-term, consistent progress.

Some bodybuilders who choose to use steroids also commonly take SARMs such as Ostarine to support their PCT phase or bridging between cycles to maintain muscle gains.

How To Use Mutagenic Labz Ostagainz

Ostarine (MK-2866) can be used by itself or stacked alongside other SARMs and natural testosterone boosters such as Mutagenic Labz Metamorphosiz and Olympus Labs Test1fy.

The half-life of Ostarine is approximately 24 hours so the full dosage can be taken once per day.

For men, the recommended dosage is 20-30mg per day. For women, the recommended dosage is 5-10mg per day.

Ostarine is suitable for women in very low doses, recommended only for experienced female athletes. For women looking to use SARMs, it is always advised to thoroughly research and understand the implications and potential side-effects. Staying at low dosages is key to avoiding unwanted side-effects but there are always risks to consider.

The recommended course length is 8-12 weeks followed by a mild PCT such as Mutagenic Labz Regen-T.

Additional information

Weight50 g

MK-2866 (Ostarine)


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5 reviews for Mutagenic Labz Ostagainz (MK-2866) 10mg x 60

  1. Patrick Weber

    Can’t go wrong with Mutagenic Labz and awesome fast shipping, ordered late almost 6 O’clock but emailed customer service to see if there’s any chance they could still get it out to me, and they managed to get it out to me for next day delivery! Arrived next day! Amazing service as always and top quality products.

  2. Brian Jackson

    Impressed with Mutagenic first cycle on its own to test run and then stacked it with S4 and GW501516 – best stack I’ve ever used for fat loss, lean muscle gain (strength gains aren’t amazing but that’s not really my goal). Overall it’s the best for body recomposition hands down.

  3. Anonymous

    Fast delivery and fast shipping. After 4 weeks of use, I noticed that I gained 4 kg. The results are satisfactory.


    As usal quick delivery and solid product. It’s legit and good quality .Recomened Mutagenic labs as had few products now and all are fire !!!

  5. Ashley Morris

    Really happy with the service I received my order today really fast delivery. From my past experiences I have taken anabolic steroids and also sarms and from what I found out from personal experience sarms gives you that dryer harder muscle look. And the best part about it is you keep about 80% off lean muscle gains overall a win win. I would highly recommend this product.

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