<<Disclaimer: Verify this information before applying it to your situation.>>
http://www.marketwatch.com/story/alvine-pharmaceuticals-announces-upcomi
ng-presentation-of-phase-2a-alv003-data-in-patients-with-celiac-disease-
2011-09-22
or
http://tinyurl.com/3mu6g77
There are different phases of drug studies
Phase IIA is specifically designed to assess dosing requirements (how
much drug should be given).
Next would be 2b.
Phase IIB is specifically designed to study efficacy (how well the drug
works at the prescribed dose(s)).
Michael
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