Optimised Research Labs Mass Gain Stack

£19.97 (12%)
Earn 139 Loyalty Points
(2 Reviews)
Secure Payments & Tracked Delivery

Introducing the Optimised Research Labs Mass Gain Stack, a comprehensive solution designed to help you achieve your muscle-building goals. This powerful stack combines the benefits of Ibutamoren MK677, Ligandrol 4033, Myanabol YK11, and Clomedex PCT-ex to provide you with unparalleled results.

Key features of the Mass Gain Stack include:

• Ibutamoren MK677: Boosts growth hormone levels, enhances muscle growth, and improves recovery time.

30 Days Supply – 60 x 12.5mg Vegetable Capsules - Ibutamoren, sometimes referred to as MK-677, is an orally active, long-acting, selective, and nonpeptide ghrelin receptor agonist and growth hormone secretagogue. It is expected that users will experience significant increases in appetite, excellent gains in muscle, improved sleep quality, elevated moods, better recovery, and great pumps.

• Ligandrol 4033: Increases lean muscle mass, enhances strength and endurance, and promotes fat loss.

30 Days Supply – 60 x 5mg Vegetable Capsules LGD-4033, also known as Ligandrol, is a selective androgen receptor modulator (SARM) that works orally. In addition to bodybuilders and strength athletes, Ligandrol has a reputation for maximizing mass and strength gains.

• Myanabol YK11: Stimulates muscle growth, improves bone density, and enhances overall physical performance. 

30 Days Supply – 60 x 5mg Vegetable Capsules There is no doubt that YK-11 is the wildcard in the group of currently available SARMs - an exciting compound that is almost a hybrid of the two. As Follistatin expression is increased, YK-11 indirectly inhibits Myostatin and facilitates anabolic processes.

• Clomedex PCT-ex: Supports post-cycle therapy, restores hormonal balance, and minimizes potential side effects.

30 Days Supply – 90 Vegetable Capsules The unique blend of six scientifically proven ingredients in Clomedex helps restore hormonal balance by working synergistically. After a SARMS cycle, Clomedex is specifically designed to be used as post-cycle therapy after the initial 8 weeks course.

** This is a 30 day course, we recommend doing a 60 days for optimal results **

With the Optimised Research Labs Mass Gain Stack, you can optimize your training efforts and take your muscle gains to the next level. Whether you're a seasoned athlete or just starting your fitness journey, this stack is designed to provide you with the tools you need to maximize your results.

For research use only

Reviews (2)
Write a Review and share your opinions!
2 Reviews:

Great Value
28 November 2023  | 

Really great value for money, very happy with the results.

22 of 22 people found this review helpful.


Thanks for sharing Sergio, we're so pleased you are happy with the results.

Games changer
22 October 2023  | 

This stack has truly been a game-changer, my strength went up fast, and my weight too. Definitely worth the money.

16 of 16 people found this review helpful.


Thanks, James for sharing!

Shipping Info

Our priority is to ship all orders* in stock placed before 12 p.m. Monday through Friday (except bank holidays). If an order is placed after 12 p.m. and it is in stock, it will be shipped on the next working day (except during bank holidays). To make your shopping experience with us more enjoyable, we offer a wide range of delivery partners, including Royal Mail, DPD, and UPS. All orders in the UK are trackable. All orders over £99 are delivered free of charge.

  • Royal Mail 1 - 3 Working Days
  • UPS 2 - 5 Working Days
  • DPD 2 - 4 Working Days

** For orders dispatched to the EU orders shipped can take 5 - 21 working days to reach their destination. It is the customer's responsibility to cover import duties and taxes (if applicable) Please note that we cannot be held accountable for any orders that cannot pass through border customs. You must ensure such orders are legal and allowed by the country to which they are shipped. Orders are not refunded once shipped. By placing your order, you hereby agree to such terms.

Tracking & Delivery 

You will receive a 'Shipping Confirmation' email once your order has been dispatched. It will include tracking information and the courier tracking link you can use to follow the progress of your order. It is imperative to provide your correct email address, otherwise, you will not receive this email. In rare cases, your email provider filters our emails into your spam folder, so please check this folder before contacting us.

If you do not receive your order by the expected delivery date stated, you MUST inform us within 48hrs at so we can investigate with the relevant courier immediately. Failure to do so may mean we are unable to remedy the problem which may include a refund or reshipment of your order.

Incorrect delivery information as stated by the customer is the responsibility of the customer who will be charged for carriage if we need to make a collection on their behalf and/or the order needs to be reshipped.

We do need to state that it is the customer's responsibility to ensure they are present to sign for their order. In no way can Just SARMs and/or its couriers be held liable for failed deliveries, unless either party has been negligent in their duty to deliver. 

For more information see our t&c's apply here. 

Optimised Research Labs
Powered by ProofFactor - Social Proof Notifications