I typically recommend that par value be set at $0.001 or $0.0001 per share. Thus, if a founder purchases 8,000,000 shares of common stock, the minimum price that the founder has to pay is $8,000 at $0.001 per share or $800 at $0.0001 per share.
Answer: Dextromethorphan (DXM) stays in your blood on average about 4 days. I repeat, that's on average. The range of days is around 3 - 5 if you are not being safe about it.
In brief: About 9-10 days. Being that the half-life of Azithromycin (z pack) is about 3 days, potentially the drug will stay on your system for about 9-10 days. The levels of course will continue to decrease in your body once you have stopped taking the drug.