Supplement Facts
Supplement Facts
Serving Size: 1 Capsule
Servings per container: 60
 Amount per serving%DV
Pro-Mag 4-Chloro-17a-methyl-androst-4-ene-3b,17b-diol 20mg **
Methylstenbolone 2, 17a-dimethyl-5a-androsta-1-en-17b-ol-3-one 4mg **
Max LMG 13-Ethyl-3-Methoxy-Gona-2,5(10)-Diene-17-One 20mg **
Epistane 2a3a-epithio-17a-methyl-5a-androstan- 17b-ol 10mg **
**(DV)Daily Value Not Established    

 Other Ingredients: Hypromellose, Stearic Acid, Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose. 

Product Description

Beast Plexx by Assault Labs Bulking Monster Matrix 

***Not For Beginners*** 


Are you searching for the most hardcore prohormone stack on the market today? Beast Plexx is a 4 prohormone stack that delivers Monstrous Results!


Want to add size, strength and bulk? Beast Plexx will do it for you! 


The carefully selected ingredients and mg's of the Beast's ingredients is what separates Beast Plexx from all the other wannabes. This stack was put together with optimization of each prohormone in mind. Beast Plexx is a stack that has been created for putting on beast size gains!  

beast plexx at

This product contains Epistane, Pro Mag, Methylstenbolone & Max LMG, an excellent mix of compounds perfect for adding BEAST SIZE gains on your body. Then the final ph in this stack is 10mg of Epistane which will decrease estrogen and add lean hard mass to your physique. In total this 4 PH stack is made for a serious body transformation! 

With the Beast you will experience significant Size, Strength and Muscle Hardening, what else can you ask for?

If you are an experienced player and you want to take your physique to the ultimate level you need the Beast, Beast Plexx by Assault Labs.  


What are the Key Features of Beast Plexx by Assault Labs?

-Monster Bulking Matrix

-Monster Mass Gains

-Serious Strength Gains

-Iron like Muscle Hardening

-Improved Recovery

-Quad Prohormone Stack 

-Designed with the Advanced Prohormone user in mind.


What are the ingredients that make up Beast Plexx by Assault Labs?

Pro Mag;  This is the first methylated compound in this powerful 4 compound stack. P-Mag or Pro Mag is short for Promagon. This compound is known to add lean muscle mass and help increase strength gains. Pro-Mag is often compared to halodrol. Pro-Mag can be used as a bulking compound or a cutting compound depending on calore intake. Pro-Mag users can enjoy hard lean mass gains as well as strength gains with little to no water retention. 


Methylstenbolone: a solid mass builder that has exceptional potency and does not aromatize into any estrogenic compound. It has affinity for the progesterone receptor, so estrogen and progesterone receptor mediated side effects are not a concern. Methystenbolone in this stack adds size and mass to your frame. 

Max-LMG: A serious size gainer that packs mass and strength. Max LMG is a anti-progesterone so it creates hard muscle gains. Max LMG is very popular as a stacking compound and is usually a compliment to other prohormones like Methylstenbolone and Halodrol.

Epistane: Epistane is derived from Dihydrotestosterone (DHT) and is an anti-estrogenic dry compound. A lot of excess fat is due to excess estrogen, Epistane will actually decrease estrogen through aromatase inhibition, which means Epistane prohormones are fantastic cutters! On the other side of the coin, Epistane will bind to your androgen receptors which leads to changes in your muscle cell’s function. These changes result in increases in your muscle’s potential for growth and repair. Epistane will allow you to push beyond your genetic potential!  


Suggestions for Use of Beast Plexx by Assault Labs


Again, Beast Plexx is not a beginner prohormone stack. If this is your first cycle and you are looking to bulk up, check out the Msten Extreme Mass Builder by Assault Labs.


For Beast Plexx, take one capsule in the morning with food, and take the second serving 6-8 hours later. Due to the strength of Beast Plexx, on cycle support is mandatory; your best option for this would be a premium cycle support like Blockade by Assault Labs.


Make sure that once done with your cycle of Beast Plexx you follow it up with a 30 day PCT. Post Cycle 3x by Vital Labs is your #1 option for this.

It is highly suggested that you stack your PCT with a cortisol inhibitor and additional testosterone booster, this will help users retain more of their gains. 

Adding a cortisol inhibitor can only help you retain more gains as after a prohomormone cycle your cortisol levels tend to rise which can lead to muscle breakdown and increases in body fat. Stack your PCT with a product like Lean Xtreme or Reduce XT to help reverse this process.

Stacking your PCT with an additional testosterone booster will help you get your testosterone levels back to normal even faster, which will hellp you retain more of your muscle gains. 


Some people experience back pumps while on cycle which is typically caused by a deficiency of Taurine. For this supplement 5-10 grams of Taurine by Premium Powders daily to reduce back pumps. 


Make sure to drink 1-1.5 gallons of water daily and avoid alcohol during your cycle. Make sure to take 30 days off once done with PCT before starting another cycle. 


beast plwxx at


Warning: KEEP OUT OF REACH OF CHILDREN. Consult your physician before using this dietary supplement. Do not use this product if you are at risk or are being treated for high blood pressure heart kidney thyroid or psychiatric disease difficulty in urinating prostate enlargement anxiety depression seizure disorder or stroke. Consult your healthcare professional before use if you are taking any prescription drugs. Consult your healthcare practitioner before beginning any program. 


These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Questions & Answers

Product Questions

I am currently using Predator Plexx by Assault Labs but I was wondering if I can use Beast Plexx for my next cycle after I complete PCT and take the necessary time to cycle off?
What else do you have to take with beast plexx?
Can this safely be stacked with stano shred? I'm trying to bulk while shedding excess water.
I'm currently on Epistane for my first cycle. Would Beast Plexx be too much for a second cycle several months from now after I complete pct and take 30 days off?
Can I stack Beast Plexx with IBE Epistane?
I know that Epistane should be ran at 30-40 mg per day but this one has 18mg pills so how much should I take?
All Reviews
Supplement Facts
Supplement Facts
Serving Size: 1 Capsule
Servings per container: 60
 Amount per serving%DV
Pro-Mag 4-Chloro-17a-methyl-androst-4-ene-3b,17b-diol 20mg **
Methylstenbolone 2, 17a-dimethyl-5a-androsta-1-en-17b-ol-3-one 4mg **
Max LMG 13-Ethyl-3-Methoxy-Gona-2,5(10)-Diene-17-One 20mg **
Epistane 2a3a-epithio-17a-methyl-5a-androstan- 17b-ol 10mg **
**(DV)Daily Value Not Established    

 Other Ingredients: Hypromellose, Stearic Acid, Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose. 

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Average Rating:
based on 28 reviews

Items 1 to 10 of 28 total

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JASON Verified Buyer November 19, 2013
Recommended --- 5 Stars
  • This was my 2nd PH experience, I have tried just about every (legal steroid like product) ever made since the mid 90's. This one is by far the 2nd best, the 1st is Mag-10 which has not been available in about 13 yrs no thanks to the FDA.... I started taking BP I was 225 # after my 4 week cycle using Protex I finished @ 242# eating dirty and not dieting, followed that with 3X PCT and maintained 238#.... My bench 2 RM went from 250 to 315, I have lost a little strength off the cycle but still able to bench a steady 275.. Libido was through the roof and the pumps were endless. I never felt my muscles so full and pumped... Everyone noticed the size I had gained.. Unfortunately, this came with a price.. I suffer from acid reflux and this made it worse, which required surgery... Regardless I would use this product again and strongly recommend trying it yourself.
  • Capsules do not dissolve fast enough and can clog your intestine making bowel movement sluggish.
  • Running a product as strong as Beastplexx, we would suggest taking Blockade over protex, stronger on cycle for a stronger PH. That should help reduce the sides, although it sounds like your sides mostly had to do with pre-existing conditions.

    We would not suggest Beastplexx for a second time PH user, but you obviously have a bit of experience and your body has quite a bit of tolerance using these kind of products if you are from the Mag-10 days.

    Keep crushing it Jason!
Was this review helpful? Helpful22 Unhelpful2
Gorge Verified Buyer February 26, 2014
The best Gainz of my life
  • Started at 200lb and jumped to 220lbs. This was my first cycle and my best cycle. Should have started with a single compound but i've tried a lot of other supplements and decided it was okay to start with beast plexx. I loved this stuff and looking to run another cycle.
  • -Great gains
    -Good Pump
  • Nothing
Was this review helpful? Helpful15 Unhelpful3
Luis Verified Buyer March 9, 2014
Solid Gains! Some Sides
  • Just about to wrap up this cycle, have had some solid gains. I took this because i lost a lot of weight after my surgery and wanted to get back up there. after 2 weeks i was back up to my pre-surgery weight and then i surpassed it. I am heading into my PCT, with 20+ lbs added from beast plexx. I usually drop close to 5 lbs in PCT so i imagine i will keep a solid 15-18 lbs off this. Its been great, a lot has to do with appetite. My appetite has been insane! Unfortunately some sides came with it. I had a bit of an acne breakout across my chest/shoulders and some on my face. Small price to pay for what this product gives you.
  • big appetite
    solid gains
    20+ lbs (no joke)
    fill them sleeves out
  • acne
Was this review helpful? Helpful10 Unhelpful2
SWOLnation Verified Buyer July 22, 2013
iron gang b#&@h!!
  • gained a solid 14 pounds on this product!
    Better then mutant plexx!
    bench went up insane 275 struggling to 365
Was this review helpful? Helpful7 Unhelpful2
MikeDc2 Verified Buyer December 31, 2013
Turn ur beast mode on
  • Packed on a solid 16.5 pounds during my first cycle kept all my weight gains thru my pct bout to start my second cycle in just about 2 weeks
Was this review helpful? Helpful5 Unhelpful2
Bret Verified Buyer January 4, 2014
  • This is my 3rd PH cycle and so far has provided the best gains in strength and size. Did not experience lethargy until week 5, and wasnt much at all. Had some minor acne, but have had no signs of gyno so far. Have gone from 213lb to 230lbs going into week 5 at 2 caps per day. Blood pressure stayed in a good realm with thr help of Blockade. I will use Beast Plexx again next cycle and bump it up to 3 caps per day. This is one of the few PH sups that says its ok to use 3 caps per day and is safe for up to a 6 week cycle, which I really like.
  • Good price and great effects
  • No cons so far
  • Hi Brett, we are happy that you are seeing great results from the Beast! Due to the strength of this stack we do not recommend dosing past 30 days. However It is your choice to dose past that point. Please make sure to take a good Post Cycle after and continue with the blockade during the cycle. Best of Luck!
Was this review helpful? Helpful6 Unhelpful3
Haiden Verified Buyer June 27, 2014
Way better than i expected
  • Overall this pro-hormone has been the best i've ever used (for muscle gain), and i've used Super DMZ 3.0 and plenty more. Unfortunately I was sick for an entire week of the cycle which meant no gym or calories so my results could have been way better! The main thing i noticed about this pro-hormone was the crazy quality muscle gain. My muscle became lean and very physically appealing; it just created a very high quality muscle, low fat, aesthetic physique.

    (Dosage: Cap a day) 1 / 2 / 2 / 3

    (Muscle Gain) The muscle gain was awesome! in the first two weeks i put on 3kgs/6.6lbs but then i got sick, lost 3kgs/6.6lbs. I basically lost everything after i got sick. But week Four came around and i gained another 3kgs/6.6lbs. too be able to get that in one week was nuts. 3 caps a day was crazy! it really made me wonder what i could have achieved if i didnt get sick.

    (Strength Gain) I experienced no strength gain at all and i think this is because i never even got an opportunity too. I got sick at the start of week 3 which is the prime time for pro-hormones to kick in.

    (Side Effects) Pimples, roid rage, sensitive to corking and muscle cramps
  • Crazy quality muscle gain
    Excellent mass gainer
    Increase in overall energy
    Dominant sense of well being
    Made me a freak in the gym
  • Roid Rage
    Senstive to muscle cramps (take Taurine)
Was this review helpful? Helpful4 Unhelpful1
Kodi Verified Buyer June 13, 2014
This shit really works
  • I've done two cycles of different ph's the first which was sust 250 worked tremendously went from 120 to about 155 in one month and bench went from barely getting 100 lbs up to doing 225 ten times second was bedlam all I gotta say it gave me awful sides and no gains absolutely worthless. But this shit beast plexx already in the first week gained ten pounds and have no sides that I can see yet all in all great product.
  • Serious gains serious strength
Was this review helpful? Helpful5 Unhelpful2
Ricardo Verified Buyer March 25, 2014
Awesome bulking results
  • Gave me a lot of strength. Solid gains. Weight went up overall about 15 lbs of pure muscle.
  • 1. strength gains
    2. 15+ lbs of muscle
  • wish it had more capsules but other than that everything was great
Was this review helpful? Helpful3 Unhelpful1
denco Verified Buyer July 24, 2014
My inner beast- angry and hungry as hell!
  • Coming to the end of my cycle now. Started taking two a day with blockade on cycle (highly recommend for this ph stack) also with estro strike to be safe and dropped the dosage to one a day the last week as I was having trouble sleeping and thought a lower dosage may help which it did. The only other side affects I got were a couple minor nose bleeds, lethargy towards the end and RAGE! I mean little things would set me off! I felt like a asshole all the time my gf didn't like me too much while using this and I'm usually a nice guy. I did however make some expressive gains. Strength was no doubt surprising to say the least and put on 10 pounds of solid mass which is damn good for me being a hard gainer and I've run cycles before with little gains, people were saying I got a lot bigger too. I couldn't eat enough...I literally ate everything I could find semi clean/dirty and lifted as heavy as I could. All weights went up considerably I'm a bit shocked. Anyway I would definitely try again. This stuff is no joke!!! Oh and be nice to your lady. Have fun
  • Strength, Size gains, increased appetite
  • Raging, nose bleeds
Was this review helpful? Helpful1 Unhelpful1

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