When Kava Kava was legal supplement brand Solgar, carried a extract in it s line of supplement s. When taking way more [4x/ 5x] then the recommended dosage. Did make me sleep, but that could be attributed to placebo. Or a minor sedative effect.
Had a energy drink before going to bed. Took me a lot of bed wrestling even after ingesting those 12 caps before falling a sleep they were high on Kava Lactone s.
The brand is known for quality the effect s were minor at best. My own made Kava Kava with shredded root soaked in Milk and Lecithin. Strained numbed my tongue. The original way to use traditionally is having human s chew it and spit the activated stuff with saliva in a bowl. Then consume together, gross. And Unsanitary.
Mine did nothing akin to a described gone well experience.
Now it s illegal in afaik whole EU so no more experimenting. Never got it to properly work. So it fit s your description. Knew a guy that lived on Fiji. And even the local made beverage he was offered and indulged in was as far as he could tell without effect s.
He rarely drank Alcohol but remarked the glasses Kava consumed didn t even produce a intoxication equal to 1 unit of Booze. That was in one of the places Kava Kava originated, it is possible the mixture offered to new comers is more ceremonial then active. A Fiji-an probably could tell more.
So it s not a weird occurrence to notice no effect s.