Changes

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''.(Ray and Ray, 2015)

===== Triphala Rasayana =====

===== ''Triphala Rasayana'' =====

Triphala a combination of haritaki, amalaki and bibhitaka is one of the most important medicines in Ayurveda. Its an important rasayana also. Triphala mainly pacifies kapha and pitta.  By removing obstruction to its movements, it helps to maintain proper actions of vata. It improves the functions of dhatvagnii to digests ama and eliminates abnormally accumulated mala and doshas, therefore makes the srotas clear and patent to enable nutrients to reach dhatus. It also controls meda which helps to maintain balance in all the dhatus, because abnormally increased meda blocks nutrition of other dhatus and produces imbalance.  

''Triphala'' a combination of ''haritaki, amalaki'' and ''bibhitaka'' is one of the most important medicines in [https://en.wikipedia.org/wiki/Ayurveda Ayurveda]. Its an important ''rasayana'' also. ''Triphala'' mainly pacifies ''kapha'' and ''pitta''.  By removing obstruction to its movements, it helps to maintain proper actions of ''vata''. It improves the functions of ''dhatvagni'' to digests ''ama'' and eliminates abnormally accumulated ''mala'' and ''doshas'', therefore makes the ''srotas'' clear and patent to enable nutrients to reach ''dhatus''. It also controls ''meda'' which helps to maintain balance in all the ''dhatus'', because abnormally increased ''meda'' blocks nutrition of other ''dhatus'' and produces imbalance.

===== Shilajatu =====

===== Shilajatu =====