Posted by Dr. Ace on December 28, 2008, at 18:05:47
In reply to Re: Dexedrine vs. Adderall pharmacology, posted by JadeKelly on December 28, 2008, at 16:12:44
pH level is usually not a major determinant of drug absorption. Usually little drug absorption occurs in the stomach.
Further down the alimentary canal is the small intestine, the first 6 inches or so of which is the duodenum. The majority of nutrients, vitamins, and drugs, etc. are absorbed in this section of the gastrointestinal tract.
The total surface area of the stomach is much less than that of the small intestine (where most drug absorption occurs). The lining of the small intestines is composed of many villi, or "fingers" that cause a very large surface area that provides better absorption.
The passage of a drug through the intestines is usually slow enough to allow complete drug absorption into the body.Legal Disclaimer:
These statements have Not been evaluated by the Food and Drug Administration.
This information is not intended to diagnose, treat, cure, or prevent any disease.
poster:Dr. Ace
thread:98610
URL: http://www.dr-bob.org/babble/20081223/msgs/871206.html