I switched to SuperNova Infinite after taking Havok-137.
Overall, I'm not impressed with the product. Coming from Havok-137 which has 300 mg of caffeine per serving v Nutribolics 200 mg, I definitely felt the lack of stim. It doesn't feel like 200mg of caffeine, I'll tell you that.
It tastes disgustingly sweet. I suppose this is better than some of the medicinal tasting pre-workouts, but it's definitely not nice. Furthermore, the direction suggest adding another several ounces of water if it is "too sweet." So Nutribolics must be aware of how sweet it is, which is just confusing. Maybe they should fix their formula instead of asking the customer to super-dilute each serving and drink a shit-tone of water.
But what really killed it for me, was the lack of pump. I was expecting at least some kind of pump, but I felt really flat during my workouts.
I almost feel like this should be reclassified as a stim/energy/nootropic product, instead of a workout product. This is mainly because I felt a very noticeable nootropic effect, which I'm assuming came from the mushroom blend. Huge sense of clarity and good-vibes/calmness. I felt very "present" in my workouts - and I really want to emphasize that, as someone who lifts frequently, this effect was extremely noticeable. I didn't realize there was a mushroom blend until this effect caused me to look for a possible cause in the ingredient list.