Thanks for getting back to me. I think I can get you awfully close to
the type of numbers you're looking for.
The actual number of prescriptions written in the US, and their
breakout by demographics or types of medicine -- are proprietary
statistics that are only available in expensive market-research
reports, like this report for almost $3,000:
However, bits and pieces of information do become publicly available,
and I've put these together into an overview of the pediatric
prescriptions in the US.
According to information available through the FDA website, from a
2006 document, there are about 3 billion prescriptions written every
year in the US:
National Association of Chain Drug Stores
...Our member pharmacies serve as the largest providers of outpatient
prescription medications in the nation, filling over 70
percent of the more than 3 billion outpatient prescriptions dispensed
annually in the United States.
Pfizer, Inc. has a site devoted to pediatric pharmaceutical practice,
which states that there are 200 million prescriptions written each
year for children and teens:
Did you know?
...More than 200 million prescriptions are written annually for
children and teenagers.
Hence, pediatric prescriptions account for:
200 million / 3 billion = 6.67% of all prescriptions.
There is ample information from the Census Bureau on the population of
children and teens in the US:
Annual Estimates of the Population by Sex and Five-Year Age Groups for
the United States: April 1, 2000 to July 1, 2005
Total Population 296,410,404
.Under 5 years 20,303,724
.5 to 9 years 19,538,793
.10 to 14 years 20,857,743
.15 to 19 years 21,038,989
Thus, there are about 81.6 million children 19 years or younger, or
about 27.6% of the total population of 296.4 million.
Similarly, there are 60.6 million children 14 years or younger, or
about 20.4% of the total US population.
Lastly, the 14-years or younger children account for 74.3% of all
children 19 or younger. So as a rough first cut, the 14 and under
crowd account for about three fourths of all pediatric medicines.
I trust that's the information you're looking for, but if anything
else is needed, please let me know by posting a Request for
search strategy -- Google searches on combinations of:
"million OR billion prescriptions"
"million OR billion * prescriptions"