Our colloidal silver is tested for purity and efficacy. We guarantee our colloidal silver to be a true colloid! NP/SW colloidal silver is up to 50% less expensive by potency compared to our competitors.
Since 1994, NPSW has provided health food stores, practitioners and loyal customers the highest quality colloidal silver on the market.
Natural Path / Silver Wings 250 ppm and 500 ppm colloidal silver can be diluted to 10 ppm, thus making it colorless.
Many of our customers prefer to take a full strength dose as needed. Our colloidal silver is guaranteed to be a pharmaceutical grade. Highest Quality !!