It looks like the OrexinDiet charlatans are making the rounds again.
I posted about this a couple years ago. It's completely fraudulent. Dr. Dev probably doesn't even know they are using his image.
First of all, orexin is not bioavailable via ingestion. That's why they inject it into brains or abdominal spaces or spray it up the nose.
Secondly, this is a homeopathic product. They take a drop or two of orexin (maybe), put it in water then dilute it to like a billionth percent. There is no detectable orexin left. It is water.