2. Sushruta Samhita (Su.)
In the Sushruta Samhita, Trikatu is clearly recognized under the broader classification of Mishraka Gana,[3] a foundational concept in Ayurvedic pharmacology. This method of grouping - Karmatmaka Vargikarana - is based on the similarity of pharmacological actions rather than solely morphological or botanical features. Within this framework, Acharya Sushruta describes 37 such Gana, and Trikatu is prominently included.
This classical verse explicitly defines Trikatu as the polyherbal combination of Pippali (Piper longum), Maricha (Piper nigrum), and Shunthi (Zingiber officinale).
Furthermore, the subsequent verse outlines its Karma (therapeutic actions). This verse clearly delineates Trikatu’s role in treating Kapha and Medo-dominant disorders, including Meha, Kustha, Tvagvikara, Gulma, Pinas and Agnimandya, with prominent Deepana (digestive stimulant) and Lekhana[4] (scraping) properties.
A review of the text reveals that Trikatu and its synonyms are well represented with a total of 98 references found in the Sushruta Samhita. Of these, Vyosha appears 48 times, Trikatu 28 times, Katutrik 13 times, and Tryushana 9 times. This widespread mention across the text emphasizes the significant clinical utility of Trikatu, especially in conditions involving impaired Agni, accumulation of Ama and disorders rooted in Kapha-Meda imbalance. Therefore, while Acharya Charaka did not explicitly classify Trikatu, Acharya Sushruta not only defined it precisely but also systematically categorized it under a pharmacologically functional group. This structured and action-based classification reinforces the role of Trikatu as a potent therapeutic agent and justifies its continued prominence in Ayurvedic formulations and clinical practice.
3. Ashtang Sangraha (A.S.)
Acharya Vagbhata, in both Ashtanga Sangraha and Ashtanga Hridaya, provides valuable insights into the therapeutic applications and pharmacological understanding of Trikatu, though he does not formally classify it under a specific Gana. Unlike Acharya Sushruta who included Trikatu under Mishraka Gana, Acharya Vagbhata addresses it more through practical application, describing its properties, actions and indications in multiple contexts across both texts.
In Ashtanga Sangraha, Trikatu is described in the Vividha Aushadha Vijñaniya Adhyaya (A.S.Su.Sth.12/54), while in Ashtanga Hridaya, it is discussed in the Annaswaroopa Vijñaniya Adhyaya (A.H.Su.Sth. 6/64). The synonyms Vyosha and Tryushan are used interchangeably for Trikatu, aligning with earlier textual traditions.
Though not part of a formal classification in Vagbhata’s treatises, Trikatu is prominently featured, where it is listed among both the Deepaniya and Shoolaprashamana groups,[5] indicating its relevance in enhancing digestion and relieving colic or abdominal discomfort.
Acharya Vagbhata emphasizes Trikatu’s efficacy in managing Sthaulya (obesity), Mandagni (poor digestion), Shwasa (dyspnoea/asthma), Kasa (cough) and Peenasa[6] (rhinitis/sinusitis). These indications demonstrate the broad therapeutic range of Trikatu in Kapha-Medovaha disorders and digestive ailments.
Moreover, Trikatu is a key component in several formulations described by Acharya Vagbhata. A notable example is his adoption and rebranding of Kusthadi Churna (from Charaka) as Hingvadi Churna,[7] used especially in treating obesity (Sthaulya), underlining the formulation’s clinical relevance.
In the Chikitsa Sthana of Ashtanga Hridaya, Acharya Vagbhata prescribes Trikatu in the treatment of Udara Roga,[8] Gulma,[9] and Swarabheda[10] (hoarseness of voice). These references reinforce the formulation’s multipurpose utility across digestive, respiratory and metabolic disorders.
In the Ashtanga Hridaya, the formulation Trikatu is referenced a total of 114 times. The individual frequencies are as follows: Trikatu is mentioned 14 times, Tryushan 12 times, Vyosha 86 times, Katutrik 3 times, and Katutrayam once. His detailed referencing of Trikatu also demonstrates continuity and evolution from earlier texts like the Charaka and Sushruta Samhitas, emphasizing the dynamic integration of classical knowledge in clinical practice.
The term "Chaturushana" is not explicitly mentioned as a formulation in the Brittrayi (Charaka Samhita, Sushruta Samhita, and Ashtanga Sangraha/Ashtanga Hridaya) as a separate or well-defined formulation like Trikatu.