Herbs

Andrographis

Also called: kalmegh, andrographis paniculata

A bitter herb (kalmegh) used in Ayurveda and Chinese medicine.

Why people take it
Colds, sore throat.
What the evidence says
Some evidence for easing cold symptoms.
How it is usually taken
Usually 300 to 400 mg of extract three times a day for up to 10 days.
Be careful
Allergic reactions; avoid in pregnancy.
Medicines it can interact with
May add to blood thinners and blood pressure medicines; may affect immune-suppressing medicines.

Other herbs

EchinaceaElderberryGarlic extractGingerPeppermint oilMilk thistleSaw palmettoSt John's wortValerianChamomileLemon balmPassionflowerKavaRhodiolaGinkgoMoringaFenugreekCinnamonBlack seedLicorice

Common questions

What is Andrographis?

A bitter herb (kalmegh) used in Ayurveda and Chinese medicine.

Why do people take Andrographis?

Colds, sore throat.

Does Andrographis work?

Some evidence for easing cold symptoms.

How much Andrographis do people take?

Usually 300 to 400 mg of extract three times a day for up to 10 days.

Is Andrographis safe?

Allergic reactions; avoid in pregnancy.

Does Andrographis interact with medicines?

May add to blood thinners and blood pressure medicines; may affect immune-suppressing medicines.

Sources and further reading

Last reviewed 31 October 2026. Written by Satya Babu.

🔎 Search all supplements

For information only, not medical advice. Supplements are not medicines: they are not tested and approved like drugs before they are sold, and they can interact with medicines. Talk to your doctor or pharmacist before you start one, especially if you are pregnant or breastfeeding, take regular medicines, or have kidney, liver or heart disease.