Detailed text transcripts for TV channel - DW - 20190506:09:26:00
Clinical trials that is into research with actual patients initially healthy volunteers five if you can. of around ten thousand active substances evaluated in pre-clinical research only about five actually get as far as clinical trials active ingredients are tested in three faces off and on many thousands of patients and the drug will only be approved if the clinical trial goes off without a hitch that's got the whole thing takes about ten to thirteen years and cost several hundred million dollars one good you know pharmaceutical companies prefer to invest in projects with high profit expectat...