I KNOW WE HAVE ACID IN OUR STOMACH'S SO WHEN WE
TAKE A PILL LIKE PROZAC OR LUVOX THAT ARE MEANT TO GO TO THE BRAIN IS THE
BRAIN AFFECTIVE BY THE ACID ? THANK YOU.
The stomach is acidic. In particular HCl, with a pH between about 2-4.
Depending upon its chemical composition, a particular medication may
affect (or be affected by) the acidic environment of the stomach.
Pharmaceutical manufacturers study this in the course of the development
of the drug. One of the following outcomes is possible:
1. No effect. The drug can be taken without regard to the contents of
2. The drug is activated by stomach acid, so the label may advise
taking the medication on an empty stomach, or advises
against the use of antacids some number of before and after the drug is taken.
3. The drug is de-activated by stomach acid. In this case the label
may instruction may advise taking with milk.
4. The medication may be enterically coated. That means that the drug
is encased in a coating that will not dissolve at the low pH
in the stomach, but does so in the small intestine, which is alkaline.
There are other possibilities, but I think you get the picture.
FYI: The acid is confined to the stomach unless one has what is called
acid reflux in which the sphincter [muscle valve] between the stomach and
the esophogus doesn't close properly. This is a fairly common condition
and can be serious.
FYI: The acidic environment is necessary for proper digestion. In
addition, the low pH kills many pathogens that are ingested, thus
protecting the body from some potential disease conditions.
FYI: The lining of the stomach excretes several layers of mucous which
protect the stomach lining from the acid, unless one develops a peptic
ulcer which exposes to attack by the acid. The esophogus contains no such
mucous excreting glands, and hence is subject attack if the person has
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Update: June 2012