Behind every classical formula sits a second literature that gets far less attention: the Nighantus, the lexicons of materia medica. They are where a plant’s names are collected, sorted and argued over.
What a Nighantu does
A Nighantu records, for each plant, the synonyms it answers to, the group it is placed in, and often the part that is collected. Bhavaprakasha Nighantu and Raja Nighantu are among the better known. They are reference works rather than treatment texts, closer to a botanical dictionary than to a formulary.
Why the synonyms are the substance
Because classical names describe, the synonym list is itself information. Arjuna’s entry carries Dhavala, Indradru and Nadisarja, and each of those says something about the tree. A Nighantu entry read carefully tells you what the plant looks like and where it grows.
Where the disagreements live
The lexicons do not always agree with the commentators. Whether Kakubha is another name for Arjuna or a separate drug is a case in point, and the tradition preserved both readings rather than choosing.
Why it matters to a label
Because a synonym list is not a species list. A careful modern label states the botanical name and the part, which is what Arjuna Capsules do.
Frequently Asked Questions
Is a Nighantu a treatment text?
No. It is a lexicon of materials and names. The treatment texts are the Samhitas.
Which Nighantus are best known?
Bhavaprakasha Nighantu and Raja Nighantu are among the most frequently cited.
Do the Nighantus always agree?
No, and where they differ the difference is preserved in the literature.
This article is for educational purposes and describes the classical Ayurvedic record. The products mentioned are food supplements, not a substitute for a varied, balanced diet, and are not intended to diagnose, treat, cure or prevent any disease. Take them under the guidance of a qualified Ayurvedic practitioner.
