P7C3 is also quite easy to administer; it can be taken orally and has no problem crossing the blood-brain barrier that trips up some drugs. That's all great news, but it gets even better. A derivative compound of P7C3 -- called A20 -- seems to be even better at protecting neurons in the hippocampus than its parent compound. More study is obviously needed, but P7C3 and its derivatives might just be the jumping off point for researchers seeking to finally make Alzheimer's little more than a memory.