What are the four limbs of treatment and what qualities should the attendant have?

Detailed answer

Verse 42 says that physician, patient, medicine and attendant, each with its qualities, are the four unequalled limbs of treatment, and together they destroy disease quickly, as a king defeats enemies with his fourfold army. The patient should be wealthy, long-lived, intelligent, well supported by family and servants, strong, self-controlled and wish for his own good (verse 39); the medicine should come from a good region, be gathered in season, small in dose, pleasant, of good appearance, taste and smell and work as soon as taken (verse 40); and the attendant has the qualities of verse 41. Verse 43 adds that the physician, helped by the other three, brings quick relief.