Yes yopo does work.
Pretty intensly,Ive tried it on many occasions straight and half tanked on grog ive had 2 1 gram lines up each nostril and it only takes 5 minutes for the nauesia and bad body feelings to kick in and make me puke,more so when drinking grog ,not so bad on an empty stomache.
It does make you feel really shit nauesaious and puke but the end results are great,only had CEV of red Patterns.
An old lady that sits to the right of me making sure all is o.k.,got told she is my totem.Use some relaxing music to add to the efects makes a big diff.%)