On Dec 2, 2006, at 1:21 PM, semen69 wrote:
other than just being ayurvedic they aren't similar at all. Some very useful rasayanas that I have used myself. Some contain non- ayurvedic ingredients like Gingko which can give some people headaches.
Actually at least one of the websites Robert linked too will not carry any metallic products in their rasayanas, while Energol-MA contains a very tiny amount of siddha makaradhwaja.