Safety Argentyn 23® is manufactured in an NSF GMP-Registered manufacturing facility with a laser focus on purity, efficacy and safety. At 23 ppm, Argentyn 23 falls below the silver daily Oral Silver Reference Dose (RfD) of 350 mcg (micrograms) as established by the EPA.† Purity The purity of the silver, the water and the formulation … Continue reading Safety and Toxicity