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Fiber · NOW (COUNTERFEIT)
Psyllium Husk Caps
CriticalAdulterated
What the lab found
Counterfeit versions sold on Amazon contained rice flour instead of psyllium, plus trace amounts of sildenafil (Viagra). Missing UPC and lot numbers.
Failure type · Adulterated
Spiked with undisclosed pharmaceutical ingredients or banned substances.
Source
NOW Foods investigation, 2023; Amazon seller enforcement