[Friend's Name],

I found this great story on CityPaper.net and wanted to share it with you...here's a teaser:

Synergism

When pharmacologists refer to "synergism," they're almost uniformly talking about something bad. Medical synergism refers to two drugs that have similar negative effects which, when combined, produce a far more powerful effect than would be expected. In short, each drug exacerbates the problems associated with the other. Here two plus two can equal five — or 500.

...

Check it out at: http://www.citypaper.net/articles/2010/01/14/synergism

-- [Your Name Here]