S4 UK SARMS
MASS (S4) Andarine
£78.97 £58.97 Add to basket
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MASS (S4) Andarine

£58.97

-25%
(181 customer reviews)

80 in stock (can be backordered)

QuantityBulk Purchase Pricing
1 - 20% Discount
3 - 520% Discount
6 - 830% Discount
9 - 10040% Discount

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UK SARMs – MASS (S4) has been compared by researchers to have a similar effect to the anabolic compound Stanazole, however with a slightly higher muscle protecting and muscle building effect. This product is great for body fat reduction and muscle protection during reduced calorie intake and/or intense cardio training.

 

Due to the fact that S4 (Andarine) binds to androgen receptors, it can increase strength and build lean muscle mass without creating water weight, drying out the joints, stressing the liver, or causing severe suppression or shutdown. What’s more, there is strong evidence that S4 also helps prevent osteoporosis, meaning that it will strengthen bones and soft tissues within the body. Likewise, S4 is great at preventing muscle wasting for those who choose to use it as a bridge between anabolic cycles in order to keep muscle mass gains.

 

* 99% Pure SARMs
* Pharmaceutical grade
* Manufactured in the UK
* Compounded by UK SARMs’ Pharmacologist
* HPLC Tested
* Free Next Day Delivery UK / Free International Shipping
* Scientific-backed advice and assistance

 

These products are not for use in preventing, curing, or treating a particular disease or ailments. Sold for research purposes only. Not sold for human consumption.

 

Dosage:

A dose of 25mg per day for 5 days on and 2 days off per week of Stanazine (S4) is recommended. Each bottle contains 30+ days of use. 1 ml is 3/4 of the dropper or 25 mg. Cycle Length: 8 – 12 weeks. Shake well before use.

 

Product NameS4
Short NameMass
Alternative NameAndarine
Molecular FormulaC19H18F3N3O6
Concentration25mg/ml
Volume30ml

 

Our Guarantee
We make some of the highest quality products in the world, and we want to make sure we back that up with a risk-free 90 day guarantee.

If you don’t have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase.

Buying items online can be a daunting task, so we want you to realise that there is absolute ZERO risk in buying something and trying it out.  If you don’t like it, no hard feelings we’ll make it right.

We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance.

 

181 reviews for MASS (S4) Andarine

  1. Riley (verified owner)

    Very well worth the money.

  2. Armin

    Really pleased with this ostarine vial, arrived incredibly quickly too.

  3. Fergal

    Excellent product, recommended

  4. Jake

    Unreal gains. No joke!🔥🔥

  5. Rico

    Good service, reliable company. Highly recommend

  6. Mark

    Worked well while eating carbs but seemed to lose it’s affect when on a keto diet. Going to try again while on a high carb diet and hopefully get the same results as the first time.

  7. Mikey

    Metabolism has increased massively. Will buy again

  8. Andy

    Fast and efficient✅

  9. Glen

    Gains upon gains since I started using this product. I will never order from anywhere else again #UKSarmz

  10. Johnny

    Could only rate this review 5 stars… if it was my way I’d of put 6! This supplement has finally changed the game within my fitness journey/goals. Good gym routine & a good diet is key.

  11. Peter

    Cheap, reliable. One happy customer 👍🏻😎

  12. Logan

    This supplement is a must have if you’ve just finished you’re 8 week bulking cycle👍🏻

  13. Lucas

    Amazing supplement. Goes hand in hand especially after a long 8-12 week cycle. Would buy again!!

  14. Joseph

    Fast shipping. Happy customer from France 🙂

  15. Ryan S

    After a long period of time training I finally came across UK sarms & read some really promising reviews. Great customer service. Quick and fast delivery time. I will update you with my results as this is my first time ever using sarms. Great stuff guys👍🏻

  16. Rory M

    Super fast shipping!!!

  17. Nathan

    Satisfied with my results and I’m only 6 weeks into my bulk. I hope I don’t lose any gains when I finish this product. Fingers crossed 🤞

  18. Mandeep

    🌟🌟🌟🌟🌟 love this product

  19. Marc

    A very happy customer from Denmark. I will be sure to tell a friend😎

  20. Yugi

    The only place I’ll ever buy sarms again.
    Top notch.

  21. Shane

    Delighted that I have finally found a product that works🤪

  22. Russel

    Seeing results in a matter of weeks!

  23. Sean

    11/10

  24. Ivan

    Off the charts. Gains, more strength and one happy man in the gym. I cannot thank you enough. Keep it up guys🙏🏻

  25. Michael P

    Started on a low dosage and seeing a difference already 💪

  26. Steven

    Ordered the wrong product by accident… luckily enough after speaking to the customer service team they were able to change my order accordingly and I still received my goodies by the end of the week. Thank you!

  27. Graham

    Noticed a big difference in strength and endurance! Would definitely recommend 🤩

  28. Tony M

    Heard from a work friend that this was his secret to success. Let’s see what the future holds. Good value for money.

  29. Pier

    Great value for money. 100% order again

  30. Roger

    My results after 7 weeks have got my family and friends questioning my training regime… little do they know that sarms even exist🙈👏🏻

  31. Levi J

    Quick delivery!!

  32. Charlie

    Unreal results! Would recommend for anyone no matter you’re fitness goals! Results don’t lie…

  33. Joe

    The pumps and hardening of the muscles was amazing. Would do it again

  34. Rupert

    Great! gives you lean dry gains.

  35. Harry

    Serious gains 💪

  36. Thomas J

    lost 12Kg in around 3 months!!

  37. Junior

    I got slightly stronger in the cut way more vascular veins started popping in my shoulders.

  38. Richard W

    Best company for sarms! Wouldn’t go anywhere else 💪

  39. Paul S

    I expect effect but I just had a way better mood in general,

  40. Warren

    It was strong enough to maintain most of my muscle during a cut (depending on how much mass you carry, how lean you plan to get, and how steep a calorie deficit you plan to run)

  41. Henry

    Did a harsh cut on it, lost 12Kg in around 3 months!

  42. Vince

    For me andarine always improved feeling of well being as well as pump and generally feeling strong or “fit”

  43. Reuben

    helped minimise muscle wasting while I was on a fast.

  44. Harvey H

    Strength is unbelievable at the moment. Can’t believe the weight I’m now able to lift

  45. Kareem

    Reliable company and Greta product

  46. Blake

    Building muscle mass without the water weight. What wouldn’t you love!

  47. Chester

    👍👍

  48. Clyde

    Good price for a great supplement

  49. Bruno

    Really fast delivery. Thanks so much.

  50. Daryl

    uksarms is honestly great. Good prices. Genuine product. Great customer service. Very happy and will be coming back for all the supplements I need!

  51. Dwayne

    After about 5 days, you can definitely feel that the pump is different.

  52. Angus

    Definitely see and feel a difference after 4 days.

  53. Ellis

    Defo recommend

  54. Guy

    Best thing is no water weight but building my muscles 👍

  55. Fergus

    Really quick delivery

  56. Rick

    Best customer service. And quick delivery. Received yesterday. But I have high expectations for this.

  57. Manuel

    It has somewhat help my cutting as my abs are now visible and gains coming in quicker. Definitely recommend

  58. Lewis

    Will definitely buy again

  59. Drew

    Amazing difference within the first week of using this product I filled out more but you have to train hard too

  60. Ben

    Definitely see the results

  61. Marcus

    Good stuff

  62. Max O

    Still early days but have noticed a change and so has the wife on chest area. Happy.

  63. Trevor

    Iam a 60 year old just getting back into fitness this product has helped me show gains I definitely will be continuing with this product

  64. Stewart

    After being initially sceptical i have to say i am extremely pleased with the gains i have started to see after only two week of takingS4 ive already ordered some more

  65. Wesley

    Within 2 weeks of using S4 I gained 2kg. I noticed that am increasing weights and feeling the pump when am training and I feel great.This product its effective and works if you train hard. Happy to continue using this product

  66. Tobias

    Good product

  67. Russell

    After 2-3 days seen more lean muscle mass

  68. Ray

    Great

  69. Mansoor

    Been using for 3 weeks now and already noticed the difference the best I’ve come across

  70. Lee

    Another good product with great results

  71. Hunter

    Very happy with the results really works thanks uksarms

  72. Liam

    amazing seen some real great gains plus training strength increased very happy

  73. Gary

    Great supplement

  74. Toby

    It clearly does what it states on the tin! Makes you big and strong! I haven’t looked back, I don’t need no other products to make me look and feel stronger.

  75. Floyd

    Really happy can see the results after 2 weeks

  76. Jeffrey

    This product made me sceptical as all products say they work… and this really does. I’m just 2 weeks I can see a huge difference in my body, energy and mood. Could not recommend this product any more. BUY!

  77. Jamie A

    S4 is brilliant it really works I have already stepped up a size thanks uksarms

  78. Andy K

    Fantastic product. You really do feel stronger and gym performance is greatly improved. Started noticing size and strength benefits after a few days. Will be using again.

  79. Anthony

    Its working for me was just skin and bone feel a lot better now thanks to this product just needed a bit more muscle

  80. Robin

    It is a very powerful strength and muscle builder and feels natural too..

  81. John

    It’s works proper. In this next 6 months the results are going to be amazing as it’s all ready working now. It’s been 7 weeks and I can already notice a difference. I suffered with insomnia for 10 years so I was proper in bad shape but I have 100% faith in this product. Thank you uksarms

  82. Richard W

    Great for motivation definitely, not feeling the heavyweight gains yet halfway through but killing me rep’s compared to before .

  83. Wayne R

    Taken as directed. Noticeable gains in short period.

  84. Frankie L

    Good product, this is the second month on it. Strength improved, definition improved

  85. Louis

    Great product has helped me massively in the gym

  86. Bobby

    Wow! Two weeks in and amazing results this is a product that actually works and you don’t have to be a bodybuilder you just put in good workouts and the results you can see rapidly!!

  87. Raymond

    I started taking these and felt different at the gym, could power through my hour session, for 8st to 10st in mater of weeks

  88. Dylan

    I am 51 years old, experienced lifter. I have had noticeable gains in strengths.

  89. Craig F

    Love this product, would definitely recommend it. Second time I’ve used uksarms products and will 100% use again and again.

  90. Francis

    This product works and works fast! I have already got two of my friends using S4 and they are also well happy with the results they are getting

  91. Jay F

    This product really works for me I have tried many others which have been expensive,this showed me results which many friends noticed an increase in size ,also I have a lot more power when training thanks Uksarms

  92. Ben

    Been taking 4 weeks now . Took 3 weeks to start noticing gains . What I like about this is the energy you feel when I start my morning workouts I would feel an extra 20% more energy.

  93. Andrew

    Be patient guys it takes a few weeks for you to notice the effects. I would workout 5 days a week ( weights cardio ) you see results and it’s amazing.

  94. Toby D

    easy to take and noticed results a week later, started losing fat and getting leaner

  95. Drew

    OMG absolutely smashing product.

  96. Fred

    Strength through the roof in first week and put on 3kgs of muscle mass in 2 weeks so far. Will be buying more.

  97. Richie

    Yeah brilliant highly recommend

  98. Michael T

    Excellent, seeing a difference with my training when using this product

  99. Tre

    Excellent

  100. Oliver

    Product as described, did notice a improvement

  101. Andre

    definitely I see the difference in my body transformation, feel like I’ve bulked up a bit.

  102. Philip

    My 1st week of taking this product and already noticed the difference, more energy and feeling much stronger. Definitely I’ll be getting more down the line.

  103. Spencer

    Does what it says on the tin, lifting heavier and looking leaner

  104. Tyler

    I was very skeptic although at first but after 2 days I noticed a massive improvement in my workouts in both strength and stamina, even my mood has improved. Most importantly I saw instant changes in my appearance

  105. Nathan S

    I really like this it beats other products iv tried,, excellent

  106. Simon

    i am finding this really is working, i am following the instructions and the results are indeed very noticeable and not just to me excellent, very impressed

  107. Jacob W

    Perfect stuff, definitely worth a buy

  108. Wiley

    Does exactly what it states. Awesome, powerful product.

  109. Greg

    I love this product

  110. Antonio

    Good quality

  111. Dexter

    Definitely noticed the improvement in my workout and recovery after using this product. Something that is becoming more and more important now that I have turned 46 !

  112. Walter

    Very good product i get the biggest pump on when im training and gained some good size and strength in a very short time.

  113. Henderson

    Great stuff have used it before lockdown, can’t want to use it again

  114. Laurence

    Really quick delivery 📦

  115. Lonnie

    Saw results after a few days

  116. Michek

    Worth the money

  117. William

    Provides strength and energy

  118. Desmond

    Dramatic results, first time taken I put on a stone second time was half a stone and third and 4th time a stone. This was when I first started training. This is amazing

  119. Dillon

    Brilliant customer service. the gentleman was awsome handled me in the best manner and also gave me a good advice on products!

  120. Alexander

    It gives you that extra push ,your work rate goes up really quick!

  121. Alan

    So far so good

  122. Terry

    Started showing signs straight away and feel much better in myself

  123. Billy

    Seems to help

  124. Theo

    Great product thank you.

  125. Romeo

    Has a great effect I am intermittent fasting for a natural testosterone spike and this adds so much power to that my head feels focused and my workouts and rep ranges have increased rapidly.

  126. Tobias

    Excellent quality product and exceptional service from a first class company

  127. Gregory

    Best ever products, I will use uksarms products the rest of my life.

  128. Stephan

    Worth it I love product

  129. Phil T

    Perfect

  130. Khari

    Strong and gave the edge to achieve goals

  131. Keanu Y

    Well recommended. So pleased.

  132. Warren P

    Did notice a change in size after taking for 1 month

  133. Paul A

    Gave me the kick I needed at 55 years old

  134. David F

    Works really well for me. Strips fat and added pump and energy in the gym. Can’t get enough

  135. Jordan

    Always been a little sceptical about these products but now I’m a believer!!

  136. Alex

    Visible results in two weeks changed nothing about my routine just included the supplement.

  137. Leon

    Really good. Perfect boost

  138. Adam

    For me this product helps the body performing at 100%. Gives me also more motivation and focus which is good to really hit the gym.

  139. Lewis

    Once again uksarms supplements are the best has changed my body into lean muscular physique as well extreme strength and endurance.

  140. Luke

    So far no complaints, enjoying my workouts and have gone up in weights

  141. Tony

    Have started to see growth and the amount of weight I am lifting has increased very quickly

  142. James J

    Great product and can really see the difference.

  143. Ricardo

    Excellent product. Does exactly what it says on the tin. nothing has been as effective as this product. Will be ordering more.

  144. Omar

    can’t complain great energy

  145. Charlie R

    Definitely makes you stronger, feel the difference after 2 weeks

  146. Isuf

    I feel extra pumped after training and strength has gone through the roof.

  147. Ricky

    Really like this product, can see and feel difference . Would recommend

  148. Sunny A

    I can definately see the gains i am making easy to take and no side effects

  149. Jared

    Again another great product i saw definite gains while using this

  150. Solomon

    great product…it seems to be working..

  151. Carl

    Take my workout to the next level.

  152. Ryan C

    Excellent product and arrived very quick

  153. Bob N

    Strength is through the roof

  154. Nicholas E

    Excellent product and excellent customer service

  155. Mick

    I can feel the difference

  156. Jayce

    What can I say it does what it says on the tub. After around 5 days I really started to feel my performance improving going from my usual 3×8 rep range to easily pushing 4×10 and adding weight to my sets by about 5-10%.

  157. Kane

    Highly recommend If you’re trying to up your training game and see some quality results

  158. Conor

    Regular gains even without a structured regime, even at the ripe old age of 43

  159. Jamie D

    the best I’ve had as long as u put the work in

  160. Lee W

    Very good supplement

  161. Stewart

    It gave me strength. Was combined with protein foods.

  162. Alejandro

    Good Results in days

  163. Shane

    can definitely say I have seen a big difference in the weight I’m lifting and how long I’m lifting for, before fatiguing. I would definitely recommend you try.

  164. Aleem

    No other products come close.

  165. Anjum

    It’s very good stuff. I’m happy that I discovered this product . This is a number 1 product.

  166. Shawn

    great product,really good,

  167. Chris

    great product,i dont use no other than this,does exactly what it says it will do.

  168. Michal

    Great stuff, got alot stronger after taker this and training hard.

  169. Cameron

    Awesome

  170. Nic

    Feel energized and strong

  171. Wilson

    I’m very happy about this supplement

  172. Jake

    with the combination of supplements I can clearly see results after the first week.

  173. Zachary

    Increased my bench press by 5kg already,it’s looking good so far.

  174. Bryan

    Great results in short time

  175. Antonio

    Great product all round for serious gym users

  176. Tariq

    Big help in the gym. Able to push myself more and more with these tablets.

  177. Nigel

    Great product,I can feel the benefits when training

  178. Ali

    After using this product my time in the gym is alot better. Able to lift more and last longer and gain more muscle.

  179. Juan

    Excellent product I buy this continuously and it produces really great results,Notice the difference much stronger better muscle definition and more energy.

  180. Abdullah

    This product enhances strength and you will start to see it work within a week or so If you are training 3-4 times a week and eating properly.

  181. Marsel

    I noticed recovery was enhanced and I was able to train back to back days (which I’ve struggled in the past).

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