In the past, I put up a thread speculating whether West Poison Au Yeung Fung could have helped his adopted son Yeung Gor purge the Passion Flower Poison that afflicted him for much of ROCH. Au Yeung Fung was dead by the time that Yeung Gor encountered the Passion Flower Poison, so there's no way of knowing for sure, but many here at this forum believed that Au Yeung Fung could have found the antidote in time.
East Heretic Wong Yerk See was known as a master of many disciplines besides martial arts, including medicine. Wong Yerk See invented the 9 Flowers Jade Dew pills, and in the LOCH '82 TVB series, he even believed that he had the skill to raise the dead (not part of the novel, I realize, but the character was nevertheless a medical genius in addition to being a Great martial artist). All during his bout with Passion Flower Poison, Yeung Gor did not encounter Wong Yerk See. If Wong Yerk See had shown up at Passionless Valley when Yeung Gor was poisoned, could he have helped Yeung Gor cure the poisoning? Wong Yung was the one who finally figured out the antidote to Passion Flower Poison, and I figure that whatever Wong Yung could do with medicine, Wong Yerk See could probably do ten times better.
The Divine Indian Healer Monk found the antidote before Wong Yung did, although he was murdered by Lee Mok Sau before he had the chance to tell anybody. How would these other great healers from the Jin Yong universe have done in treating Passion Flower Poison?
1. Divine Healer Sit from DGSD.
2. The Ming Cult's Butterfly Canyon Healer Wu Ching Lau from HSDS.
3. Cheung Mo Gei