He later dedicated his energies to natural products research and worked in close collaboration with an outstanding pharmacologist Dr. B N. Dhawan. He identified the memory enhancing properties of the well-known Ayurvedic plant Brahmi, which also has been industrially licensed. Dr. Singh was one of the coordinating scientists of the Department of Ocean Development sponsored National Project on Development of Potential Drugs from Marine Flora and Fauna.
Dr. Singh has traveled internationally as Visiting Scientist and to attend International Conferences. He was invited by the Royal Government of Bhutan twice and framed a National Research plan on Commercial Development of Medicinal Plants in Bhutan, which is being funded by European Commission, Brussels.
Dr. Singh has over 60 research publications in national and International journals and over a dozen national and International patents to his credit.
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