What the evidence addresses
Andrographis paniculata is used in products marketed for colds. MSK summarizes research suggesting possible improvement in respiratory symptoms, including cough. Some trials studied a combination with eleuthero and were manufacturer-sponsored; those results do not isolate andrographis alone. [1]
Where the conclusion stops
Symptom improvement is a narrower claim than preventing infection or curing an illness. Different extracts and combined ingredients also make it difficult to treat every bottle bearing the plant name as the intervention tested. [1]
Ask what the comparison actually tested
Suppose an advertisement links to a study of two herbs but sells only one. The link may concern a related topic, yet it does not answer whether the single ingredient produces the same result. Put the studied formula and the offered formula side by side before accepting the claim.
Next, identify the comparison and the outcome. Fewer days of coughing, lower symptom scores and fewer infections are separate questions. A meaningful summary would tell you which one changed and whether that difference mattered to participants. A headline that simply says “clinically tested” leaves those decisions unresolved.
| Hypothetical evidence | Question it can address |
|---|---|
| A two-herb formula improved symptom scores | Did that complete formula help the measured symptoms? |
| A single-herb capsule cites that trial | Was this capsule or an equivalent extract tested? |
| Advertising promises fewer infections | Did the study count infections, or only symptoms? |
Safety and treatment considerations
Adverse effects include digestive upset, headache, rash and allergic reactions; anaphylaxis has been reported. People taking blood thinners, blood-pressure medicines or cancer treatments should discuss possible interactions with their clinician. Some interaction concerns are based on laboratory findings rather than established clinical effects. [1]
A useful next step
This overview does not identify a preferred dose or product. Bring the actual ingredient list into any care discussion; matching the name of a plant is only the first step in matching evidence.
Sources for this article
- Memorial Sloan Kettering Cancer Center — Andrographis
Source consulted: 2026-09-17. This is a reference resource, not a claim that we conducted the studies or tested a product.