When first learning of the benefits of colloidal gold, I at one point watched a youtube video from Flynn scientific. the scientist used gold chloride, heat, stirring and sodium citrate in order to make colloidal gold.
It eventually worked.
Here is the inquiry: she did a simple test where she placed sodium chloride solution into a test tube full of the prepared colloidal gold suspenstion, and it immediately turned purple thus changing its characteristics.
My concern is with the consumption of colloidal gold, that some of it is lost in the gut since there is sodium chloride in the gut naturally. I use kephra's recipe with gold chloride maltodextrin and 1mmol sodium carbonate solution.