Hi, I Want To Know If Histussin (or Histatussin Cough

Hi, I want to know if Histussin (or Histatussin Cough Syrup) is available over the counter in the U.S. My doctor use to prescribe it for me but says the pharmaceutical company quit making it. But on the internet you see people talking about it. It worked great on my allergies/cold would clear my congestion up in two days and I would prefer to take it rather than Acetaminophen-Cod and Advil cold and sinus? Any information would be helpful.