Dear friends, excuse my English, I try to clarify some issues. Colloidal gold is used in nanomollections as a vehicle in patients with serious diseases https://www.ajol.info/index.php/tjpr/article/view/145974/135490. I suggest that you use caution to consume metals and minerals without having a mineralogram pesonal https://www.daphnelab.com/en/the-mineralogram/ If you consume minerals, metal colloids or gem essences without knowing the blood metal content, you are playing with your health (you need a treatment of another order). Results of long-term ingestion (not 1 year or 2) of metals or metalloids or gemstones by their elemental toxic content are not known. If there is a measured ayurveda reading know what I mean. The old doctors all knew it by experience or observation https://www.amazon.com/Lectures-Formulas-Personal-Experience-Jiao/dp/0912111755/ref=sr_1_3?s=books&ie=UTF8&qid=1490652474&sr=1-3 The use of gold or metals for health or as a vehicle is very old. When you visit Ayurveda doctor, I might suggest to take the Ayurvedic medicines along with specific liquids (milk, ghee, water, etc.) This drink, advised along with the medicine is called the Anupana http://easyayurveda.com/2013/06/11/anupan-importance-of-adjuvants-and-after-drinks-in-food-and-medicine/. That is, Western physicians are only now beginning to use gold as an anupana. This concept is also in Taoist medicine, as well as Indian, Siddha and Tibetan medicine. It is always considered that rejuvenation, which is not the same as longevity, is possible but the products to be used are very special, purified and bio-prepared for their absorption. These are themes of Rasasastra and Bhaishajya Kalpana. Please read the few articles I have provided for you to expand on my comments https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3025621/. Another thing, both Taoists and rasasastra practitioners do not just take medicine. First prepare your body by cleaning it internally, (Panchakarma) http://www.ayurvedichealing.net/panchakarma/, then follow other practices and only in one step the product is ingested (made by a specialist). But do not forget that there is a regime, meditation, sexual techniques, regulated breathing, etc. Check out this product https://www.banyanbotanicals.com/info/ayurvedic-living/living-ayurveda/herbs/chyawanprash/. It may be enough for most people with lack of energy and weakness. Both Taoists and other scholars consider that the human being can become enlightened in this land, that is to say while it is alive. The sense of staying healthy, vital and active is that pursuit. If you just want to continue playing golf, chess or poker with long-time friends, it's another matter. Clarification, I do not sell any of the products mentioned or have any relationship with their manufacturers. Please watch over your body and mind. Do not use colloids or nano-metals simply because a person "felt" well. That's just hormesis, no rejuvenation, your hair will not be black again, nor grow where previously there was only shiny skin http://www.marksdailyapple.com/hormesis-how-certain-kinds-of-stress-can-actually- Be-good-for-you /. I've been studying and working on it for decades, the results are but they cost a lot, in every sense. In other words, it is not for everyone. I am sorry.