Which medical herb to cultivate in Nepal?

Which medicinal herb can be grown commercially in Nepal.
We have acres of land in hilly region here.We have a manpower already working in growing commercial vegetable farming.
We are looking for information on which herb to cultivate here now,for:
Medical usage or Essential oil production.
We are seeking advice and help from expert.
Please provide your valuable suggestion on which crop to choose,its Nursery guidance,suitable climatic and growth conditions & all in all the Market

you can go for Nepali satavari or Jatropha tree for oil seeds. But check the market for Jatropha oil seed market first.

Best Regards,