EHT extract including a mixture of late eluting tryptamides and early eluting tryptamides in a weight ratio of at least about 7:1 late eluting tryptamides:early eluting tryptamides, wherein the EHT extract includes at least 30% eicosanoyl-5-hydroxytryptamide, based on the total weight of the tryptamides in the EHT extract.本發明係關於一種EHT提取物,其包含重量比率為至少約7:1後期溶析色醯胺:早期溶析色醯胺之後期溶析色醯胺及早期溶析色醯胺之混合物,其中該EHT提取物包含基於該EHT提取物中該等色醯胺總重量之至少30%之二十烷醯基-5-羥基色醯胺。