60 PPM 99.99+% (125 nm) pure gold as bio-available nanoparticles colloidally suspended in pure pharmaceutical grade water.
Due to the size of the gold particles 125nm the color of the product is clear and for the most part tasteless.
FYI - most of the online discussion of colloidal gold and its color is all hype. Colloidal minerals are in parts per million and very small particle sizes: 60 PPM 99.99+% (125 nm).
Sublingual administration involves placing a substance under your tongue to dissolve and absorb into your blood through the tissue there.