There is no known product or substance called "Thermorexin." It's possible you might have misheard or misspelled the name.

If you're looking for a specific product, could you please provide more information? For example:

* Where did you hear this name? (e.g., an ad, a website, a friend's recommendation)

* What is it supposed to do? (e.g., weight loss, muscle building, energy boost)

* What form is it in? (e.g., pill, powder, drink)

With more information, I might be able to help you find the product you're looking for.