Thermogenic Without So Much Kick

I’m looking for a thermogenic (or something similar) that can help me get & stay lean, but I find it difficult to consistently take HOT-ROX Extreme because it’s just way too stimuating for me - makes me jittery, anxious etc.
Ire there any products similar to HOT-ROX without so much of a stimulant kick?

Any input is appreciated,
Thanks.