− | These four ''rasayana'' enhance intelligence. ''Yashtimadhu'' is ''sheeta'', pacifies ''vata-pitta'' and maintains normal ''kapha''. It controls ''rajoguna'' and increases ''sattva'', resulting in boosting intelligence. ''Yashtimadhu'' also nourishes ''dhatus'' and ultimately increases ''shukra'' and ''oja''. As explained by commentator Chakrapani, effects on ''indriya, mana'' and ''buddhi'' are mediated through ''oja''. ''Mandukaparni'' is ''sheeta'' and it specially pacifies ''pitta''. It also controls ''rajoguna'' and increases ''sattva''. ''Shankhapushpi'' is slightly ''ushna'', specially pacifies ''vata''. ''Shankhapushpi'' also controls ''rajoguna'' and increases ''sattva''. ''Shankhapushpi'' nourishes ''majja''. Whereas ''guduchi'' is also slightly ''ushna'', pacifies all three ''doshas'', controls tama and increases ''sattva''. Keeping in mind such peculiarities, specific ''rasayana'' is chosen for a specific person. Many researches have been conducted on these ''medhya rasayana''.(Ray and Ray, 2015) | + | These four ''rasayana'' enhance intelligence. ''Yashtimadhu'' is ''sheeta'', pacifies ''vata-pitta'' and maintains normal ''kapha''. It controls ''rajoguna'' and increases ''sattva'', resulting in boosting intelligence. ''Yashtimadhu'' also nourishes ''dhatus'' and ultimately increases ''shukra'' and ''oja''. As explained by commentator Chakrapani, effects on ''indriya, mana'' and ''buddhi'' are mediated through ''oja''. ''Mandukaparni'' is ''sheeta'' and it specially pacifies ''pitta''. It also controls ''rajoguna'' and increases ''sattva''. ''Shankhapushpi'' is slightly ''ushna'', specially pacifies ''vata''. ''Shankhapushpi'' also controls ''rajoguna'' and increases ''sattva''. ''Shankhapushpi'' nourishes ''majja''. Whereas ''guduchi'' is also slightly ''ushna'', pacifies all three ''doshas'', controls tama and increases ''sattva''. Keeping in mind such peculiarities, specific ''rasayana'' is chosen for a specific person. Many researches have been conducted on these ''medhya rasayana''.<ref>Ray S, Ray A (2015) Medhya Rasayanas in Brain Function and Disease. Med chem 5:505-511. doi: 10.4172/2161-0444.1000309</ref> |