I just posted the same question. It's Kratom.
I have tried the liquid shot. It tastes terrible but 1 shot controlled my pain all day and gave me energy. Unfortunately 1 shot of the strongest dose is $19.99.
I also tried the capsules but had to take 5 at 1 time for any pain relief and I was really tired from them.
I am trying to find an alternative to my opiates. I take 30 MG of percocet per day through my pain management Doctor.