Roll for Salsa
His services were sought by R4S in order to find an antedote to whatever poison Selos administered to them (minus Zedra). It took several days and various bodily fluid samples from the afflicted for the good Doc to even figure out a basic treatment. He took on the project pro bono just for the learning experience, as it was such a unique and rare substance and situation.
Doc Wellbrew has been a supporter of Lord Alefist in Hammerfast, even after the regent lost his position in a rather shameful scandal.