Problem:
I see that quite a lot of drugs and dietary supplements sold in the USA have -HCl(hydrochloride) added to their name. For example pyridoxine hydrochloride for Vitamin B6. I'm interested in knowing where in the digestive system -HCl compounds are absorbed?
Question: Is it in the stomach?
It would also help if I get a rough idea of how long it takes for -HCl supplements to be absorbed. Is it an hour or more?
Please explain your answer in a descriptive way.