HavoK® Pre-Workout -  WatermelonWatermelon | GNC

American Metabolix HavoK® Pre-Workout


Item # 505223


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Size: 30 Servings

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Note: This product cannot be sold in Canada


Product Information


Intense Pump*
Euphoric Energy*
Explosive Workouts*
Amazing Taste*

Label (click image to enlarge)


As a dietary supplement, take up to 8 weeks before discontinuing for a minimum of 4 weeks. Take only on workout days.
Pre-Workout: 1 Scoop 30 minutes before workout with 6-8oz water.


Do not use if pregnant or nursing. Not intended for use by those with a medical condition and only intended to be consumed by healthy adults 18 years of age or older. Before using this product consult with your physician if you are using any prescription or over the counter medication or if you have any pre-existing medical condition including but not limited to: high or low blood pressure, cardiac arrhythmia, stroke, heart, liver, kidney or thyroid disease, seizure disorder, psychiatric disease, diabetes, difficulty urinating due to prostate enlargement or if you are taking a MAOI (Monoamine Oxidase Inhibitor) or any other medication. Discontinue use and consult you health care professional if you experience any adverse reaction to this product. Do not use if safety seal is broken or missing.

Other Ingredients

Maltodextrin, Natural & Artificial Flavor, Citric Acid, Beet Juice Color, Sucralose, Acesulfame Potassium, Silica
American Metabolix
1083 FM 812, Cedar Creek, TX 78612

Nutrition Facts

Serving Size  1 Scoop
Servings Per Container  30

Amount Per Serving     % DV

HavoK® Strength & Pump Matrix (CreatineMonohydrate, L-Arginine, L-Citrulline malate)  3450 mg   **
HavoK® Anti Muscle Fatigue (Beta Alanine)  1750 mg   **
HavoK® Energy & Focus Blend  1102 mg   **
   N-Acetyl L-Tyrosine   **
   Caffeine Anhydrous (250mg)   **
   Hordenine HCL 98%   **
   Synephrine HCl   **
   L-Taurine   **
   D-Ribose   **
   Niacinamide   **
   Rauwolscine   **

** Daily Value (DV) not established.


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4.3 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Best Pre-Workout stuff!
I've tried a lots of pre-workout stuff, energy drink and this is the best one! The taste is also the best one and it doesn't make my stomach upset like the others. Don't under-estimate its size! I'm kinda a bit over average caffeine junkie, I drink 2, 3 cups of coffee a day at work and the highest caffeine Rock Star energy drink which has 240mg caffeine doesn't do good for me anymore and neither do some pre-workout stuffs from Walmart. The instruction says one scoop per day and good thing I followed that because the scoop inside the container is tiny that I was about to put 1.5 or 2 scoops. But oh boy, my heart was beating fast and I felt I could run a marathon that day! Two days later, I put a little bit less than full scoop and I couldn't sleep that night! It doesn't have much more caffeine that a Rock Star energy drink but I think it combines creatine and other stuff that gave me big boost at the gym! So, only take it on your workout day and take it way before your bed time or otherwise, you'll be sleepless that night! I'll definitely try the other flavors soon!
September 15, 2017
I have taken many pre workouts,but this one wow.I took it at noon and felt the affects all day,it was incredible.I would recommended it 100 percent.
August 3, 2017
Must Try
This product is great. I have now tried all 3 of their flavors and they all taste amazing !! If you want a product that really powers you through a workout without leaving you with a crashed down feeling this product is perfect. Its not crazy intense on the stim side but also just enough to get you feeling great. I would recommend this product to anyone from beginner to expert fitness enthusiast est
June 20, 2017
Blast off!!
This thing gets me going crazy in my workouts. It is definitely the strongest pre workout I have used since DMAA. I am a girl, and this is perfect for me. I run and then lift, and this tastes so good, i actually look forward to using it all the time!!!

I even replace my coffee in the morning with this, bc the focus at work is so incredible. Thanks American Metabolix for making this! Bikini time!! ;)
March 24, 2017
This is the only concentrate preworkout that has enough energy for me. I start with cardio and this helps me kill that at the beginning of the workout, and lasts the whole way through my weight training. I get great pumps and the energy is so positive feeling. I used to use the wal mart stuff, but this is just as affordable, and twice as good. Tastes great too. They really hit a homerun with this one.
March 24, 2017
Do not get this! You'll feel it in you right before you lift but it makes you crash super fast. After I was done with an hour and a half lift I would feel tingley again after 10 minutes of sitting.
August 8, 2016