Hi-Tech Pharmaceuticals of Norcross, Ga deceived customers with a line of natural products, which actually contained spiked ingredients according to prosecutors in Georgia. MS-NBC carries the story here. US DEA announcement here.  The NFL bans players from endorsing their products.  Ergogenics story here.

Hi-Tech was found to be using ephedra, banned after Corey Stringer died while using Ultimate-Orange, which contained the dangerous drug.  Northwestern University football player Rashidi Wheeler, 
and Baltimore Orioles pitcher Steve Bechler, also died after taking ephedra products.

A host of bizarre charges run through the prosecutor’s documents including these, that the firm:

• Discussed killing a U.S. Food and Drug
  Administration agent and blackmailing an assistant U.S. attorney.
  Neither plot was carried out, but a Hi-Tech co-founder was subsequently
  jailed after being convicted of being a felon in possession of a
  “firearm silencer.”
• Used the herbal
  stimulant ephedra in Hi-Tech diet products after the U.S. Food and
  Drug
  Administration banned its use on April 12, 2004, finding it presented
  “an unreasonable risk of illness or injury.”
• Sold
  "herbal" supplements that actually contained the active ingredients of
  prescription drugs that could interact dangerously with other
  medications.
• Illegally imported and sold banned steroids.
• Manufactured phony ecstasy tablets that were sold on U.S. streets.
• Created a muscle-building drink that was later marketed as a cleaning solution in an effort to mislead investigators.

The firm using a contaminated lab in Belieze is allegeded to:

..advertise and sell what were described as generic prescription drugs
from Canada but were actually products that they were manufacturing in
“substandard and unsanitary conditions” in Belize, according to the
indictment.

Among
the substances were the steroids Oxymethelone and Stanozolol,
controlled drugs Ambien, Valium and Xanax, and prescription drugs
Viagra, Cialis, Lipitor and Vioxx, it said.