Later generations of anti-depressants are less effective that the MAOIs, but MAOIs fell out use because doctors of that era tended to think newer==better, some MAOIs caused side effects when combined with fermented foods (fine cheese, etc), and patents allowed for a marketing budget for the pharmaceutical companies to promote their latest FDA-approved prescriptions to physicians.
Stimulants do their harm by shredding the mitochondria [0]. My observations are that Cocaine is a much safer stimulant than meth amphetamine.
[0] https://news.ycombinator.com/item?id=18211048
Emotional stress is a very important driver of substance abuse. Anything that restores the mitochondria/metabolism helps with stimulant abuse. Most important is helping the person find meaning.