alterative vs salutary

alterative

adj
  • Gradually changing, or tending to change, a morbid state into a healthy one. 

  • Causing alteration. 

noun
  • A medicine or treatment which works by changing processes within the body, rather than by evacuating something etc. 

salutary

adj
  • Effecting or designed to effect an improvement; remedial: salutary advice. 

  • Promoting good health and physical well-being; wholesome; curative. 

How often have the words alterative and salutary occurred in a corpus of books? (source: Google Ngram Viewer )