"You should not give any further statement"
Absolutely.
"pretend you never told the Inspector what you told him."[/B]
Probably, not smart, since there is a chance you were recorded, assume you were. Changing your story now would just raise suspicions.
Guys, you keep saying that "probably will come back no active ingredients" or the like, but I dont see how likely this is, I mean there is just as good a chance it will come back positive, even if it is not var.
You really need to call a lawyer.