From Men's Health · Abby Langer, RD · · 2m
Echinacea won't save your cold
The popular supplement might slightly reduce infection risk, but taking it when you're already sick probably won't help.
In brief
The popular supplement might slightly reduce infection risk, but taking it when you're already sick probably won't help. Echinacea may modestly lower your chances of catching a cold if taken preventively, but it won't shorten one that's already started, and the evidence is inconsistent. Originally reported by Men's…
Echinacea comes in many forms
This flowering plant native to North America is sold as capsules, gummies, teas, tinctures, and lozenges. Marketing often claims it will boost your immune system and prevent colds.
Immune boosting isn't what you think
A cranked-up immune system can actually attack your healthy cells and organs. You're better off focusing on diet, sleep, exercise, vaccination, and handwashing.
Lab results don't always translate
Some research shows echinacea compounds may influence immune pathways in the lab. But effects on immune cells in a petri dish are very different from effects in actual people.
Prevention might work slightly
The best evidence for echinacea is preventing colds. The National Center for Complementary and Integrative Health says it may slightly reduce your chances of catching one, but the evidence isn't strong enough to rely on it.
Taking it when sick probably won't help
Most people start echinacea after symptoms appear, hoping to catch the virus early. But research shows it doesn't reliably shorten a cold that's already in progress.
Short-term use appears safe
For healthy adults, echinacea seems safe in the short term. The most common side effects are nausea and stomach discomfort. People allergic to daisies or ragweed should avoid it.
What's in the bottle varies
Unlike medications, supplements don't need to prove effectiveness before hitting shelves. Echinacea products can differ significantly in ingredients and concentrations, so quality varies widely.
Manage your expectations
If you're healthy and want to try echinacea tea or take a supplement for a few days when you feel a cold coming on, that's fine. Just don't expect it to be a virus-fighting superpower.
The short version
Echinacea may modestly lower your chances of catching a cold if taken preventively, but it won't shorten one that's already started, and the evidence is inconsistent.
