alterative vs analeptic

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. 

analeptic

noun
  • A restorative or stimulative medication, especially one used to overcome depression. 

adj
  • Of or relating to analepsis (a form of flashback). 

  • That restores or stimulates health. 

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