Delta-8 THC, also known as Delta-8 tetrahydrocannabinol, is a psychotropic substance found in the Cannabis Sativa plant. This cannabinoid is found in numerous CBD products, industrial hemp, and marijuana. Also, it is one of the rarest cannabinoids as it is not found in significant amounts in the cannabis plant. 

Moreover, it is an isomer of Delta-9 THC, meaning it has a different arrangement of molecules and atoms. Those who find marijuana overwhelming due to paranoia and anxiety enjoy the mellow ride of Delta-8. Delta-8 THC is sometimes also referred to as Delta-8 or D8, and these terms are often used interchangeably. 

Source : https://delta8pccvials.com/4-reasons-why-delta-8-thc-is-an-appetite-stimulant/