Andrographis: what it does and how to use it

Want a simple, natural herb people reach for when a cold hits? Andrographis (Andrographis paniculata) is an herbal extract used for immune support and short-term respiratory infections. It’s not a miracle cure, but research and long history of use suggest it can cut cold symptoms and help you recover faster when used correctly.

What andrographis helps with

Most common use is for upper respiratory infections—think colds, sore throat, and mild bronchitis. Several clinical trials and a 2017–2018 meta-analysis found that standardized andrographis extracts reduced severity and duration of cold symptoms compared with placebo. People also use it for general immune support, to reduce inflammation, and for mild digestive complaints. Keep in mind evidence is strongest for short-term use during acute illness, not as a daily long-term tonic.

Andrographis contains active compounds called andrographolides. Standardized extracts list a percent of andrographolide—this number matters because it tells how strong the product is. Whole herb teas are weaker than standardized extracts and may not give the same effects.

How to take it safely

Typical doses for adults with a cold are 300–600 mg of a standardized extract taken two to three times daily, often standardized to about 4–10% andrographolides. Follow the label and avoid mixing extracts with teas expecting the same strength. Use it short-term: many trials used 3–7 days during the active infection. Long-term high-dose use isn’t well studied and isn’t recommended.

Watch for side effects: mild stomach upset, loss of appetite, headache, or allergic skin reactions in some people. Serious issues are rare but possible. Avoid andrographis if you’re pregnant or breastfeeding—some animal data suggest possible risks. If you have an autoimmune disease or take immunosuppressants, ask your doctor first because andrographis can stimulate the immune system.

Also be careful with blood-thinning meds (warfarin, aspirin) and drugs processed by the liver—andrographis might change how some medicines work. If you’re scheduled for surgery, stop it at least two weeks before to reduce bleeding risk and drug interactions.

Buying tips: pick a product with clear labeling and a standardized andrographolide percentage. Third-party testing seals (USP, NSF, or independent labs) add trust. Prefer capsules or standardized liquid extracts for consistent dosing. Avoid sellers who promise unrealistic cures or very high doses without safety guidance.

Bottom line: Andrographis can help with colds and short-term respiratory symptoms if you use a standardized extract at recommended doses. Check interactions and conditions with your healthcare provider before trying it, especially if you take prescription drugs, are pregnant, or have an autoimmune condition. Used smartly, it’s a useful tool for short-term immune support.