Having to do with curing diseases.
Example:
As soon as the antibiotic entered his system, he imagined he could begin to feel its curative effects.
Medical researchers are finding curative substances in places that surprise them. Folklore has led to some "new" cures of old diseases, and natural substances never before tried have often proved effective. Taxol, a drug used in treating some cancers comes from the bark of a certain yew tree; the challenge is now to produce this curative synthetically, since natural supplies are limited.