HavoK® Pre-Workout - Blue RazzBlue Razz | GNC

American Metabolix HavoK® Pre-Workout


Item # AmericanMetabolixHavoKPreWorkout



4.0 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Meh...skip it
To be brutally honest, I don’t keep brand loyalty but I do try different brands and flavors to see what works for me...this preworkout makes me feel like I have to run to the toilet for number two the whole time. I almost sharted. I honestly didn’t feel it at all! It wasn’t a crazy day but I was completely and utterly gassed at the the end...
June 6, 2018
Not near as intense as other reviewers imply. Okay tingles, not too intense.
March 21, 2018
6 months ago
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
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