But the vice president said the studies had not made "the next connection" - that game playing actually led to violent acts - and concluded that more research was needed.
But IV soon morphed into a multipronged, first-of-its-kind firm: It buys and licenses patents, sues infringers, acts as a venture capitalist for inventors and does in-house scientific research.
The drug, is found in Seretide and Servant inhalers, acts on beta-2 receptors in the lining of the airways, but previous research has shown that as many as one-in-seven children carry a gene variant - arginine-16 - that undermines its effectiveness.