It was a standardized extract of caapi bark that was briefly offered as a health supplement, really any powdered caapi should do, dosage should of course be adjusted accordingly. Also note this was T. peruvianus, averaging around 1% alkaloids, other cactus varieties can be much stronger.

These days I would advise against making a resin out of the cactus and stick with either just brewing the caapi and cactus into tea or taking them as extracts, because the resin is really hard on the digestive system.