When I’m doing research roundups, I quite often talk about clinical trials being “Phase 2″ or “Phase 3″. But what do these terms mean? The development of a new drug or other intervention is a long-term process. commonly taking 12 or more years before being available to patients. The regulatory process adds another hefty chunk of time.What’s happening for it all to take so long?
Research begins in the laboratory, where potential treatments are tested on animals: for instance, there is a strain of mice which have a condition very like MS. Testing drugs on them gives a reasonable idea of whether they’re likely to help people with MS. Around 1000 potential drugs are tested for each one that makes it to clinical trials.
The use of animals in drug trials is a whole other question, one I might discuss in a future blog post. Click here for more










