Palliative:

Noun 1. palliative - remedy that alleviates pain without curing
alleviant, alleviator
curative, cure, remedy - a medicine or therapy that cures disease or relieve pain 
Adj. 1. palliative - moderating pain or sorrow by making it easier to bear
alleviative, alleviatory, lenitive, mitigative, mitigatory
moderating - lessening in intensity or strength