It is very similar-the drug/substance is designed only for that person-what has been shown to kill cells from their tumor while not killing the healthy cells around it. Each person is different-what helps one person might kill another outright, so it can’t be bottled, labeled chemo-XXX and used on just anyone. I suspect that one-size thing is what is wrong with drugs anyway-no wonder you take them at your own risk...
I take aspirin. That’s it.