I use HRX for a few months out of the year to help me get lean.
I always have to start with the lowest dose (one cap in the morning, one in the afternoon) and work my way up. I’m very sensitive to it.
I also noticed that if I don’t take it with food, I get really bad heartburn, and I’ll feel like puking often.
It’s taken me the past month to slowly work up from the minimum dose to the full dose of two caps in the morning and two caps in the afternoon.
Even though I took four weeks to get to that point, I still get nauseous even if I take it with food.
This makes it difficult when my training is already done at a fast pace with short rest periods and includes complexes and circuits.
Many days, I begin feeling like I’m going to vomit about halfway through my workouts.
But other than that, no, there are no real side effects other than having a lot more of that “jittery” energy that causes me to tap my feet a lot or work really fast or have extra energy along with feeling warm most of the time and having the anti-depressant euphoria.