What is the contact information for the NFL league office?

Is no one else concerned by the fact that the StarCaps bottle itself didn't even list bumetanide among it's ingredients? I understand the NFL wants to take a hard line on banned substances but for all those saying "it's up to them to know what they're putting into their bodies", what do you want the players to do? Buy an HPLC machine and do their own chemical testing on each supplement they take?

Personally I think it's StarCaps the NFL should be pursuing, not the players in this instance.