Admixtures are any number of plant ingredients that are added to traditional ayahuasca at the discretion of the curandero who is making the ayahuasca brew. Beside b. caapi and p. viridis, a curandero may add one or more other plant species to the ayahuasca mix in order to achieve a specific formulation, according to the treatment objective for which the ayahuasca is being prepared. Admixtures may also refer to plant ingredients which are used in ceremony, or in other healing practices of native peoples of the Amazon. Vapor baths, for example, may be prepared using plant species to infuse vapors with healing properties.
It is important to note that, as with any plant medicine and any medicine of any kind, ayahuasca and its admixtures are handled and the brew is produced in the hands of highly knowledgeable and experienced native curanderos who understand the relationship between each ingredient they use.