Several herbal teas can ease cold and flu symptoms, from sore throats and coughs to congestion and poor sleep. No tea will cure a viral infection, but the right ones deliver compounds that reduce inflammation, loosen congestion, and help your body recover faster. Hot liquids themselves also thin mucus and keep you hydrated when you need it most. Here are the teas worth reaching for and what each one actually does.
Ginger Tea for Sore Throats and Nausea
Ginger is one of the most effective teas you can drink when a cold brings throat pain or an upset stomach. The key compounds, gingerols and shogaols, work by blocking pro-inflammatory proteins in the body. These are the same proteins responsible for the pain, swelling, and itchiness in an inflamed throat. A strong cup of ginger tea won’t just warm you up; it actively reduces the inflammatory response causing your discomfort.
To make it, slice about an inch of fresh ginger root, steep it in boiling water for 10 minutes, and add honey (more on honey below). Fresh ginger releases more of these active compounds than dried ginger powder, though both work. If nausea is your main complaint, sip it slowly rather than drinking a full cup at once.
One caution: ginger can increase bleeding risk if you take blood-thinning medications. If you’re on anticoagulants, check with your pharmacist before drinking ginger tea regularly during an illness.
Peppermint Tea for Congestion
Peppermint tea contains menthol, which triggers cold-sensitive receptors inside your nasal passages. Here’s what’s interesting: research published in the American Journal of Rhinology found that menthol inhalation doesn’t actually change nasal airflow or the temperature inside your nose. What it does is stimulate specific nerve receptors (called TRPM8 receptors) that create a cooling sensation, which your brain interprets as a clearer, more open nose. The relief is real, even if the mechanism is more about perception than physical widening of your airways.
This makes peppermint tea especially useful when you’re congested at night and struggling to breathe comfortably. Hold the cup close and inhale the steam before each sip to get the most benefit. The combination of hot vapor and menthol gives your nasal passages a double dose of that cooling, clearing sensation.
Elderberry Tea for Immune Support
Elderberry has stronger evidence behind it than most herbal remedies for colds and flu. The berries contain flavonoids and phenolic acids that appear to fight viruses in three distinct ways: interfering directly with the viral lifecycle so the virus can’t infect new cells, inhibiting enzymes the virus needs to replicate, and stimulating your immune system’s natural defenses through compounds called polysaccharides.
You can brew elderberry tea from dried berries or use pre-made elderberry tea bags, which are widely available. Dried berries need a longer simmer of about 15 minutes in a covered pot to extract their active compounds. Never use raw, uncooked elderberries, as they contain compounds that can cause nausea and vomiting. Commercially dried or cooked elderberries are safe.
Green Tea for a Broader Immune Boost
Green tea contains a polyphenol called EGCG that plays a unique role in immune regulation. Research at Oregon State University found that EGCG increased the production of regulatory T cells in laboratory studies, a type of immune cell that helps coordinate and balance the body’s immune response. Rather than simply “boosting” immunity in a vague sense, EGCG appears to help your immune system respond more effectively and with better control.
Green tea also delivers a modest amount of caffeine, roughly 25 to 50 mg per cup, which can help with the fatigue and brain fog that come with being sick. If you’re sensitive to caffeine or trying to rest, save green tea for the morning and switch to herbal options later in the day. Steep green tea at a lower temperature, around 175°F (79°C), to avoid extracting too many bitter tannins.
Chamomile Tea for Rest and Recovery
Sleep is one of the most important things your body needs to fight off an infection, and chamomile has a long history as a sleep aid. The active compound, apigenin, binds to receptors in the brain associated with relaxation. That said, the clinical evidence is mixed. One study of 34 adults with chronic insomnia found no significant differences in total sleep time, sleep efficiency, or sleep quality between chamomile and a placebo.
Still, chamomile is caffeine-free, mildly pleasant tasting, and has gentle anti-inflammatory properties. Even if the sleep effect is modest, drinking a warm cup before bed creates a calming ritual that may help you wind down when you’re feeling miserable. It’s a reasonable nighttime option when you want something soothing without any stimulant effect.
Add Honey for Cough Relief
Whatever tea you choose, stirring in a spoonful of honey does more than improve the taste. A Penn State study found that a small dose of buckwheat honey given before bedtime reduced nighttime cough severity, frequency, and disruptiveness better than dextromethorphan, the active ingredient in most over-the-counter cough suppressants. In fact, the cough suppressant performed no better than no treatment at all, while honey showed clear benefits. Parents in the study also reported better sleep quality for both the coughing child and themselves on nights when honey was used.
Honey coats and soothes irritated throat tissue, and its thick consistency helps suppress the cough reflex. Use about a tablespoon per cup of tea, and let the tea cool slightly before adding it so you don’t break down beneficial compounds with boiling water. Do not give honey to children under one year old due to the risk of infant botulism.
How to Get the Most From Your Tea
Steeping time matters more than you might think. Research testing polyphenol extraction across multiple tea types found that the majority of beneficial compounds are released within the first five minutes of steeping, with continued extraction up to ten minutes. After that, returns diminish quickly. So five to ten minutes is the sweet spot for most herbal teas.
Temperature also plays a role. Herbal teas like peppermint and chamomile do best with near-boiling water around 200°F (96°C), while green tea extracts better at a lower 175°F (79°C). Using water that’s too hot for green tea pulls out excess tannins that make it bitter without adding much benefit.
Drinking three to five cups spread throughout the day keeps you hydrated, delivers a steady supply of active compounds, and maintains the soothing effect on irritated airways. Alternate between types based on your symptoms: ginger and honey for a sore throat and cough in the morning, peppermint when congestion peaks in the afternoon, and chamomile before bed when you need to sleep.