You have bothing to be affraid of.
1. Dose of Atractylodes found in Letrone is not high enough
2. Atractylodes will not secrete Ghrelin directly
^^Proof of this
Is this some kind of joke? There is nothing to prove. But since you ask , ok.
1. One cap of Letrone contain blend of Atractylodes and Rice Flour 500mg.
How do we know how much of Atracrylodes it is in the cap. It is the most shady way to hide low dosed ingredients (mixing with Rice floor).
Even if one cap was 500mg 100% Atracrylodes, the recommended daily dose of 2 caps would still be to low dose! In KAMPO medicies its used 4g or more.
2. I will suggest you to read Studies done on Rikkunsh!to and you will understand that Atracrylodes is just one of few ingredients that has effect on Ghrelin. (Not the only one)