The book titled PG Diploma in Dravyaguna (Pharmacognosy and Standardization) has been written keeping in mind the non-availability of the title for prospective students. Huge collection of books dealing with Dravyaguna at undergraduate and postgraduate level is available in the market. The award for PG Diploma in Dravyaguna (Pharmacognosy and Standardization) has been abbreviated as D... Pharmacognosy. The study and conduct of PG Diploma in Dravyaguna (Pharmacognosy and Standardization) is governed by PG Diploma Regulation (Ayurveda) 2013. Syllabus has been designed for the diploma and the course is conducted in the concerned postgraduate department. Two theories and one practical examination are mandatory for the award of the PG Diploma in Dravyaguna (Pharmacognosy and Standardization). The book has been written strictly according to the syllabus issued by the Central Council of Indian Medicine. Post Graduate Diploma holder shall be eligible to join Post Graduate Le... MD (Ay.)/MS (Ay.) Ayurveda Courses in the concerned specialty and the duration of MD (Ay.)/MS (Ay.) Ayurveda Course for such candidates shall be two years only. I sincerely hope that the work shall be accepted by the students. Suggestions for improvement of the book are cordially invited.