According to sage agasthiar navagragas had been appointed to run destiny accurately according to each yugas and yuga dharmas.Even parigarams work only if human beings have good poorva punvya, athma strength, mental ability and continuous prayers.
According to sage agasthiar reciting mantras thousands of times or lakhs of times is to bring the mind and body of a human being to concentration which includes 72,000 nerves as atleast for one time so that anyone doing this can get darshan of god.
Sage agasthiar advises people to eat food as prescribed by rishis which is satvic in nature.If food is proper no need of tablets.Food have to be taken according to work nature of human beings which are very different from person to person. Avoiding non veg, masala items , bakery items will do good for stomach.One has to eat food after the stomach is empty or the food which had been taken before is digested completely. this is the proper method prescribed by rishis.