pācaka-pitta: what the term means and how it is translated

pācaka-pitta पाचकपित्त is an Ayurvedic technical term. It is rendered into English in 5 different ways, which is the reason this page exists: the renderings do not agree, and the difference between them changes what the term is taken to mean.

Identification
Transliteration	pācaka-pitta
Devanagari	पाचकपित्त
Also written	pācakāgni, pācaka agni, Pachakagni, Pachaka Pitta, Pāchaka Pitta
Category, as gathered	pitta-subtype
Grouped here under	Dosha and its subtypes
Classical citations	4
Citations checked	2026-10-08

How it is translated, and whether the translation holds

Each rendering is given with the source that uses it. The assessment is ours.

Digesting pitta

WHO international standard terminologies on Ayurveda (2022), term ID ITA-2.1.2.2 · ITA-2.1.2.2; printed p. 34 (PDF p. 52). Sanskrit term given as 'pācaka-pittam'. Description: 'Subtype of pitta mainly responsible for digestion. It divides the food into nutritive and waste portions and supports other subtypes of pitta.' · standards-body

The only standards-body rendering I could verify by retrieving the source document itself. Note WHO glosses the FUNCTION (digesting) rather than transliterating; WHO also preserves the 'supports other subtypes of pitta' clause, which is faithful to both Suśruta 21.10 and AH 12.12.

Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that licence permits. It is deliberately absent from the downloadable dataset, which is offered under CC BY 4.0 and invites the modification a NoDerivs licence forbids.

Pachakagni (digestive fire or heat)

Suśruta Saṃhitā tr. Kaviraj Kunja Lal Bhishagratna (public domain) · Sūtrasthāna ch. 21, Wikisource text · public-domain-translation

Bhishagratna renders it as an AGNI, not as a pitta, which matches the Sanskrit mūla ('pācako'gnir iti saṃjñā'). The modern habit of saying 'pācaka pitta' is a later normalisation.

Pachaka

Suśruta Saṃhitā tr. Bhishagratna, footnote at Sūtrasthāna ch. 15 · Footnote to the 'five kinds of Pittam' at Su.Sū. 15.4: 'They are named as Ranjaka. Pachaka, Sadhaka (Medhakrit and Ojakrit), Alochaka and Bhrajaka.' · public-domain-translation

Bhishagratna supplies the five names in a footnote because the mūla at Su.Sū. 15.4 says only that pitta is 'pañcadhā pravibhaktam' without naming the five.

pitta responsible for digestion of food

EasyAyurveda (Dr J V Hebbar), Suśruta Sūtrasthāna 21 study page · Commentary under Su.Sū. 21.10 · modern-textbook-website

Representative of the standard modern Indian teaching rendering. Not an authority in itself; recorded because it is the phrasing most widely repeated in Indian BAMS teaching material.

digestive Pitta

J Ayurveda Integr Med (2026), IBS/Grahani Roga case report · PMID 42492167; the paper writes 'impairing Pachaka Pitta (digestive Pitta)' · peer-reviewed-journal

A typical parenthetical gloss in the clinical literature. Reduces the term to digestion and drops the 'supports the other pitta seats' clause that both Suśruta and Vāgbhaṭa make central.

The classical passages

Each citation gives its address so a reader can check it in a printed edition, our account of what the passage establishes, and the result of reading it against its source.

Suśruta SaṃhitāSūtrasthāna 21 (Vraṇapraśna Adhyāya) · checked against the source

The Pachakagni:—By the ordination of fate or necessity (unfathomable natural cause), the Pittam, located in the region between the stomach (Amashaya) and the intestines (Pakvashaya), helps the (digestion of the four kinds of food such as drink and edibles etc.) partaken of by a living subject, and purges off the residue or impure morbiferous matter in the shape of urine and excreta after the completion of the process. Even thus located, it keeps up the temperature in its other distant locations (skin, etc.) in virtue of its native heat-giving attribute. Hence this Pittam is called the Pachakagni (digestive fire or heat) in an animated organism.

tr. Kaviraj Kunja Lal Bhishagratna · source

Seat between āmāśaya and pakvāśaya; functions of digesting the four kinds of food, separating waste, and maintaining heat at the other pitta seats; and that the designation is 'pācakāgni'.

Suśruta Saṃhitā (Sanskrit mūla)Sūtrasthāna 21:10 · checked against the source

तच्चादृष्टहेतुकेन विशेषेण पक्वामाशयमध्यस्थं पित्तं चतुर्विधमन्नपानं पचति, विवेचयति च दोषरसमूत्रपुरीषाणि; तत्रस्थमेव चात्मशक्त्या शेषाणां पित्तस्थानानां शरीरस्य चाग्निकर्मणाऽनुग्रहं करोति, तस्मिन् पित्ते पाचकोऽग्निरिति सञ्ज्ञा; ||१०||

Sanskrit mūla · source

Fixes the verse number as Su.Sū. 21.10 and shows the mūla names it 'pācako'gniḥ' (pācaka AGNI), not 'pācaka pitta'. Retrieved with the verse marker ||१०|| visible on the page.

Suśruta SaṃhitāSūtrasthāna 15:4 · checked against the source

रागपक्त्योजस्तेजोमेधोष्मकृत् पित्तं पञ्चधा प्रविभक्तमग्निकर्मणाऽनुग्रहं करोति; |४|

Sanskrit mūla · source

Su.Sū. 15.4 states pitta is divided fivefold and lists six functions (rāga, pakti, ojas, tejas, medhā, ūṣma) but does NOT name the five. The names appear only at 21.10. Several secondary sources cite '15/4' for the five pittas; that citation is for the fivefold division, not the names.

Aṣṭāṅga Hṛdaya (Sanskrit mūla; no public-domain English translation exists, so no translation is quoted)Sūtrasthāna 12 (Doṣabhedīya):10-12

Quotation withheld: nobody has yet read this quotation against its printed source, and an unchecked quotation is not published here. The passage is at this address.

Vāgbhaṭa names it 'pācaka', calls it 'anala' (fire) because it is devoid of the liquid quality, and assigns it the role of strengthening (bala-dāna) the remaining pittas. Independently corroborated: J Ayurveda Integr Med 2025 (PMID 40972327) cites 'Ashtanga Hridaya Sutra Sthana 12/10-12' for pācaka pitta.

Not to be confused with

jāṭharāgni / kāyāgni: Frequently treated as a straight synonym. They overlap but are not identical: jāṭharāgni is the general digestive fire of the koṣṭha as a functional principle, whereas pācaka-pitta is one of five named locational divisions of the pitta doṣa. Suśruta's own framing at Su.Sū. 21.9 argues pitta IS the body's only agni, which is why the mūla names the subtype 'pācakāgni' and why the two terms collapse together in practice. The distinction is real in the commentarial literature and is routinely lost in English.
bhūtāgni and dhātvagni: These are the elemental and tissue-level digestive fires. Both Suśruta (21.10) and Vāgbhaṭa (12.12) make pācaka the fire that SUPPORTS the others; it is not a superset of them and not interchangeable with them.
kledaka-kapha: Both are seated in the āmāśaya and both are described as acting on ingested food. Pācaka does pāka (cooking/splitting into sāra and kiṭṭa); kledaka does kledana (moistening/loosening the bolus). They are antagonistic in quality and co-located, which is exactly why they get conflated.
samāna-vāta: Also seated at the digestive fire and also credited with separating sāra from kiṭṭa. Classical division of labour: samāna fans and regulates the fire and moves the contents; pācaka performs the transformation.

Renderings that do not hold

"digestive enzymes" / "gastric juice" / "HCl and pepsin". A substitution, not a translation. It silently discards the clause both Suśruta and Vāgbhaṭa make load-bearing, that pācaka supplies strength to the other four pitta seats (skin, eye, heart, liver/spleen). No enzyme does that. The equation is a modern hypothesis and should never be presented as what the term means.
"Pachaka Pitta" presented as the classical Suśrutan form. Suśruta's mūla reads 'pācako'gnir iti saṃjñā', the designation is pācaka-AGNI. Bhishagratna correctly translates it as 'Pachakagni'. The '-pitta' compound is Vāgbhaṭa-flavoured and modern; using it while citing Su.Sū. 21.10 misreports the source.
"metabolic fire" used interchangeably at tissue level. Conflates pācaka with dhātvagni. Pācaka is explicitly koṣṭha-located (between āmāśaya and pakvāśaya) in both texts.

Open questions

Recorded rather than resolved. Each one is something this entry cannot currently settle.

Does Caraka Saṃhitā use the word pācaka for a pitta subtype anywhere in the mūla, or only in Cakrapāṇidatta's Āyurveda Dīpikā commentary? I found secondary claims that Caraka does not name the subtypes but did not verify this by searching the Caraka mūla myself.
Suśruta 21.10 says the seat is 'between āmāśaya and pakvāśaya'; Vāgbhaṭa 12.10 says 'pakvāmāśaya-madhyaga'. Are these identical, or does Dalhaṇa read a difference? Needs the commentary.
Whether NAMASTE's Ayurveda 'Standard Terms' list carries an entry for pācaka-pitta, and under what code.

How to cite this entry

Age Ayurveda Nighantu, pācaka-pitta, https://nighantu.ageayurveda.com/lexicon/pachaka-pitta/, CC BY 4.0. The whole lexicon is downloadable from the index. Machine-readable source: Markdown. Data exported 2026-10-08.

Educational reference only. A term entry explains what a word means and how it has been translated. Nothing here is advice, and nothing here describes how any condition should be treated.