Dear Makers of NyQuil

Did you change the formula?  I remember, back in the day, that I could take a shot of NyQuil and wake up a bit groggy and hungover.  But it was a great feeling because I had slept.  Now, I am feeling just groggy because I haven't slept.  It is very difficult to sleep when one nostril is dripping.  (The right, BTW.)  Could you please change the formula back to its originial state?  You could rebrand it as NyQuil Classic™.  It worked for Coca-Cola.