Sirius MetalsTrue Colloidal Gold (No Chemicals) - 500 mL of 50 ppm BPA-free clear plastic PETE bottle

Experienced with using colloidal gold for years. This gold has a very strong chemical/burned rubber taste and smell that is definitely not a natural occurrence of colloidal gold making process. Colloidal gold shouldn't have any noticable taste or smell. I can't recommend this at all.