TyloHot or Feverex probably contain Acetaminophen or Tylenol.  Which is good but don't take extra acetaminophen with them.  I suppose the dose is one packet every 4 to 6 hours as that is standard.  Rest and Fluids are the best.  Taking medication the cold/flu will last 3 to 5 days.  Without taking anything the cold/flu will last 3 to 5 days.  Hope you are feeling better.  Your pharmacist Aunt.