Ayruveda's 5000 year old tradition is based on food and herbs as the first medicine and key to health and vitality. Their cost effective efficacy without side effects has been creating more Ayurveda advocates in the modern western world lately. Clinics are popping up in several USA states.
Among rasayanas is Ghee, which goes a step further than clarified butter. Ghee is very cost effective because you can make it yourself from unsalted organic butter.
The other two are triphila and chyawanprash. Triphila is dispensed in tablets or powder form as an herbal supplement product containing three herbs. Triphila is not expensive, and the small daily amount required ensures your order will last for longer than a month, often much longer.
Chyawanprash can be used as a jam. Compared to not so beneficial jams on the market, it can be a bit pricey depending on the source. But only two teaspoons a day is sufficient to receive real health benefits. Compared to a lot of anti-aging formulas that have flooded the market, chyawanprash is quite cheap.
Both triphila and chyawanprash are able to be consumed every day for as long as desired or needed. There is no addiction or side effect issues. Most Ayurvedic doctors agree that the longer one takes them, the deeper the effects are. Besides their anti-aging properties, the rasayanas have many positive effects on the digestive system.