However, since researching the drug was a monumental challenge for decades, there is plenty that scientists don't understand about the substance.
Hambileswi va heteke makume ya malembe va ri karhi va dyondza xirho lexi xi 'endliweke hi ndlela leyi chavisekaka,' vativi va sayense va pfumela leswaku a va nge swi koti ku yi twisisa kahle ndlela leyi byi tirhaka ha yona.