Pulling out two separate words from a string using reg expressions?

Posted by Marvin on Stack Overflow See other posts from Stack Overflow or by Marvin
Published on 2010-03-29T21:37:43Z Indexed on 2010/03/29 21:43 UTC
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regex

I need to improve on a regular expression I'm using. Currently, here it is:

^[a-zA-Z\s/-]+

I'm using it to pull out medication names from a variety of formulation strings, for example:

SULFAMETHOXAZOLE-TRIMETHOPRIM 200-40 MG/5ML PO SUSP
AMOX TR/POTASSIUM CLAVULANATE 125 mg-31.25 mg ORAL TABLET, CHEWABLE
AMOXICILLIN TRIHYDRATE 125 mg ORAL TABLET, CHEWABLE
AMOX TR/POTASSIUM CLAVULANATE 125 mg-31.25 mg ORAL TABLET, CHEWABLE
Amoxicillin 1000 MG / Clavulanate 62.5 MG Extended Release Tablet

The resulting matches on these examples are:

SULFAMETHOXAZOLE-TRIMETHOPRIM
AMOX TR/POTASSIUM CLAVULANATE
AMOXICILLIN TRIHYDRATE
AMOX TR/POTASSIUM CLAVULANATE
Amoxicillin

The first four are what I want, but on the fifth, I really need "Amoxicillin / Clavulanate".

How would I pull out patterns like "Amoxicillin / Clavulanate" (in fifth row) while missing patterns like "MG/5 ML" (in the first row)?

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Pulling out two separate words from a string using reg expressions?

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