What is Kalmegha actually used for?

Clinically, two things: as an antifebrile (Jvaraghna) in fever and intermittent/Vishama Jwara, and as a hepatoprotective (Yakrit-uttejaka) in liver disorders and Kamala (jaundice). Wider traditional uses exist, but these two spectrums are where the herb is reliable and best-evidenced.

Is Kalmegha the same as Chirayata?

Kalmegha is Andrographis paniculata (Acanthaceae); Chirayata is Swertia chirata (Gentianaceae). They share the names Bhunimba and Kiratatikta — in the North the name usually means Swertia, in the South Andrographis — but they are different plants with different active compounds.

Why is Kalmegha called Bhunimba?

Bhunimba means “ground neem.” Kalmegha is intensely bitter like neem but grows as a small ground herb, so the classics treated it as a “small Nimba.” The same bitterness underlies its fever- and liver-directed actions.

Which dosha does Kalmegha balance?

Kapha and Pitta — Pitta through its intense bitterness, Kapha through its pungent vipaka and warming potency. Being dry, light and bitter, it may aggravate Vata in excess.

Kalmegha: A Two-Spectrum Herb, Fever and Liver

Reviewed by Dr. Pardeep Sharma, M.D. (Ayurveda) — Founder & Chief Physician, Sukhayu Ayurved, Jaipur

What Kalmegha is used for

Kalmegha is an intensely bitter, Kapha–Pitta–balancing herb with a reputation that sprawls across a dozen “immunity” claims. Used honestly and clinically, it lives in two spectrums only: it is an antifebrile (Jvaraghna — fever, including Vishama Jwara) and a hepatoprotective (Yakrit-uttejaka — liver disorders and Kamala/jaundice). Everything worth relying on about this herb sits inside those two lanes, and its whole modern reputation rests on one molecule, andrographolide.

A focused herb, used in two spectrums

The market lists Kalmegha for fever, liver, worms, skin, blood sugar, colds, cancer — the usual everything-herb pile-up. My clinical position is narrower and, I think, more useful: Kalmegha earns its place as an antifebrile and a hepatoprotective, and I use it in those two spectrums. That focus is not a limitation; it is what makes the herb dependable. When a bitter is asked to do everything, it is trusted for nothing.

Antifebrile (Jvaraghna): in Jvara and Vishama Jwara — classically a churna of Kalmegha with Maricha; its bitterness and Svedajanana action break fever.
Hepatoprotective (Yakrit-uttejaka): in liver disorders and Kamala — it stimulates the liver, moves vitiated Pitta (Pittasaraka), and is the herb with the strongest modern hepatoprotective evidence.

Wider traditional and pharmacological uses are recorded (anti-inflammatory, antimicrobial, hypoglycaemic, respiratory). They exist — but they are not where I place this herb clinically, and this page will not pretend a bitter fever-and-liver drug is a cure-all.

Sanskrit

Kalamegha (कालमेघ); also Bhunimba (“ground neem”), Bhutika, Yavatikta, Kiratatikta (shared, regionally), Kalpanatha

Botanical

Andrographis paniculata (Burm. f.) Wall. ex Nees (Acanthaceae)

English

King of bitters / green chirayata

Part used

Whole plant / aerial parts (Panchanga); very bitter

The “Bhunimba twins”: Kalmegha vs Chirayata

Kalmegha and Chirayata are constantly confused, because they share the synonyms Bhunimba and Kiratatikta — and geography decides which plant a name points to: in North India “Kiratatikta” usually means Swertia chirata (Chirayata), while in South India the same name is applied to Andrographis paniculata (Kalmegha). They are different plants of different families with different active compounds:

Kalmegha = Andrographis paniculata (Acanthaceae); active andrographolide; my focus — antifebrile + hepatoprotective.
Chirayata = Swertia chirata (Gentianaceae); active amarogentin/swertiamarin; the broader bitter antipyretic and wound herb (see its page).

Both are called “Bhunimba” because both are neem-bitter ground herbs — but knowing which plant is in your hand is the difference between a reliable prescription and a guess. This is the same identity discipline that runs through our herb library.

Ayurvedic pharmacological profile (Rasa–Guna–Virya–Vipaka)

Property	Value	Clinical reading
Rasa (taste)	Tikta (intensely bitter)	Deep bitterness drives its Jvaraghna, Pittasaraka, liver-stimulating action
Guna (quality)	Laghu (light), Ruksha (dry)	Light, dry — deepana, ama-clearing, Kapha-reducing
Virya (potency)	Ushna (warming)	Warming, sweat-promoting (Svedajanana) — useful in breaking fever
Vipaka (post-digestive)	Katu (pungent)	Sustains the drying, Kapha-clearing, metabolic effect
Prabhava / Karma	Jvaraghna, Vishama-jvaraghna, Yakrit-uttejaka, Pittasaraka, Rechana, Deepana; (also traditionally Krimighna, Kushtaghna)	Antifebrile and liver-stimulant — the two clinical actions this page rests on

Dosha action: Kapha–Pitta shamaka — Pitta-hara through its bitter taste, Kapha-hara through Katu vipaka, Ushna virya and bitterness. Its dry, light, bitter nature can aggravate Vata in excess. Both its fever and liver actions flow from this bitter, Pitta-clearing, liver-moving character.

Why Kalmegha matters clinically at Sukhayu

Kalmegha is a specialist, and I use it as one. In fever — especially lingering or intermittent (Vishama) fever — its bitter, sweat-promoting action is dependable. In the liver it is one of the most evidence-supported hepatoprotectives we have: useful in liver disease, Kamala, and as supportive care in hepatitis. Two spectrums, done well.

Dr. Sharma’s clinical note

Kalmegha is antifebrile and hepatoprotective, and I use it clinically in these two spectrums only. That is the honest scope of this herb in my hands. It is the “true Bhunimba” of the south — Andrographis paniculata — not to be confused with Chirayata (Swertia chirata), even though both carry the Bhunimba and Kiratatikta names. As a bitter, it clears Pitta and Kapha, breaks fever through its Svedajanana action, and stimulates and protects the liver. The literature will offer you many more uses; I would rather do two things reliably than ten things vaguely. For fever and for the liver, Kalmegha is a herb I trust.

Classical references

Nighantus (Bhavaprakasha and later): Kalmegha / Bhunimba as a Tikta, Jvaraghna, Yakrit-uttejaka, Pittasaraka drug — a “small Nimba” (Bhunimba) by virtue of its neem-like bitterness
Vishama Jwara: classically, one part Kalmegha churna with one part Maricha (black pepper) internally in intermittent/malarial fever
Identity: shares Bhunimba/Kiratatikta with Swertia chirata; regional usage differs (North = Swertia, South = Andrographis) — a documented substitution issue
Note: not a Brihattrayi drug — a Nighantu-era herb, like Chirayata

Modern pharmacology

Active principle andrographolide (plus neo- and dehydro-andrographolide), a diterpenoid lactone — the “king of bitters” compound
Hepatoprotective: andrographolide protects against CCl4-, galactosamine- and paracetamol-induced liver injury — the best-substantiated action, matching the Yakrit-uttejaka use
Antipyretic / anti-inflammatory / antimicrobial: documented antipyretic and anti-inflammatory (iNOS/COX-2 inhibition) activity — corroborating the Jvaraghna use; broader immunostimulant and hypoglycaemic effects are reported but outside this page’s clinical focus

The two actions this page rests on — fever and liver — are precisely the two with the strongest modern evidence. Corroboration of role, not a cure claim.

Safety, contraindications & interactions

Hypoglycaemia: Kalmegha is strongly bitter and lowers blood sugar — with antidiabetic medication it can drop glucose too far; prescribe with care in diabetics.
Fertility/pregnancy: avoid in pregnancy and where conception is being attempted (reproductive-effect concerns).
Vata/dryness & taste: very bitter, dry and light — may aggravate Vata or cause nausea/loss of appetite in excess.
Interactions: may add to antihypertensive, anticoagulant, antidiabetic and immunosuppressant drugs — use under guidance.

This page is educational. It is not a prescription. Fever and liver disease need a diagnosed, supervised plan.