Intellipharmaceutics International Inc. (IPCI)

[mopar44o]

"added niacin to Acurox, which causes uncomfortable flushing if too many pills are taken. But niacin's effects can be dulled by taking the pills with food[/b], leading panelists to question whether it truly is an effective abuse deterrent."

So basically as long as someone ate food with the pills it didn't work. Its not exactly the same as the blue dye you keep bringing up.

Searching the patent shows its FD&C Blue #1 Aluminum Lake - Which is approved for use in drugs. So a little different I'd say