Is Dextromethorphan HCL and Dextromethorphan HCL, USP the same thing?

Question

I bought a bottle of cough syrup, and looked at the label and it said that the active ingredient is "Dextromethorphan HCL, USP". What is the ",USP", and what does it do?

Answer 1

Yes.  USP refers to Stands for United States Pharmacopeia which is a non-governmental, not for profit organization that strictly adheres to certain standards of purity.  So USP may be more pure that's all but it is the same chemical.    

Answer 2

yes,just like adding"officially

'  

Answer 3

usually when an ingriedient is listed on a drug product the manufacture does not go to the extra trouble(space) to list the extra information that it conforms to USP standards.