If you are experiencing panic, you have no business owning Prana stock. You shouldn't have bought it in the first place. For that matter, if you are susceptible to panic, you should own any stocks.
Perhaps you bought shares during the recent price spike, hoping that the price would keep going up based on momentum. If so, you made a classic mistake made by many speculators. You can either fall prey to the panic or you can learn from your mistake by developing a correct understanding of the counterproductive role played by emotions when it comes to speculation and investing.
The correct state of mind for Prana shareholders is to acknowledge that the current fluctuations in share price are completely meaningless and irrelevant. The only relevant thing is Prana's science, which may or may not produce useful and profitable drugs. The results to be announced in Q1 of 2014 may give us a much better picture of whether the science has real therapeutic value. If it does, those of us who have held our shares through these little random fluctuations will be rich.
I think we are nearing the end of the selling. It all depends how many still want to take profits in this stock. I believe sellers are starting to dry up based on the volume. It may be time to start buying again.