Glaxo plans to appeal, of course,  but this win is significant for the other 600 or so plaintiffs:

After deliberating for seven hours, a state court jury in Philadelphia found Tuesday that GlaxoSmithKline failed to properly warn doctors and pregnant women about risks associated with its blockbuster antidepressant Paxil. The jury awarded $2.5 million in damages to the family of Lyam Kilker, who was born with heart defects after his mother took Paxil during her pregnancy. We wrote about the start of the trial here.

Source: Law.com – Glaxo Hit With $2.5 Million Jury Verdict in Paxil Test Case

If Glaxo loses a few more trials, my guess is that they will start settling cases en masse.