alterative vs therapeutic

alterative

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

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

  • Causing alteration. 

therapeutic

noun
  • A therapeutic agent 

adj
  • Of, or relating to therapy. 

  • Having a positive effect on the body or mind. 

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