Looking for cold virus home remedies and the best antiviral herbs list?
You’re in the right place!
My name’s Rosa Wilde, and I’m the lead herbalist here at The School of Wild Medicine.
Today, you’ll discover my top favourite herbs for fighting viruses, from colds to flu to stomach bugs.
Read to the end, and you’ll learn:
🌿 Best herbs to boost immune system & prevent colds
🌿 Most effective herbs to reduce symptoms like blocked nose, pain & cold sores
🌿 Best herbs to speed recovery time
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Best antiviral herbs and cold virus home remedies
1. Garlic (Allium sativum)
When I think about virus home remedies, garlic is usually one of the first plants that comes to mind.
Fresh garlic contains allicin, a sulfur compound formed when garlic cloves are crushed or chopped. Allicin is responsible for garlic’s distinctive aroma and many of its biological effects.
Garlic is often used as a virus natural treatment because it supports immune function while also acting as a mild antimicrobial.
Garlic can increase the disease-fighting response of white blood cells when they encounter viruses. It reduces the severity of symptoms and helps make colds go away faster.
One of the simplest home remedies for cold symptoms is garlic infused in warm broth. I often recommend finely chopping a fresh clove, letting it sit for a few minutes to activate the allicin, and then stirring it into soup or hot water with honey and lemon.
I also like to sprinkle several cloves of chopped raw garlic on whatever I’m eating at my main meal, from salads to cooked food, and do that every day as a cold preventative. Some people may not tolerate eating raw garlic and can even feel a burning sensation in their tummy, so try a small amount the first time.
Garlic is also used in many traditional cold home remedies because it supports circulation and stimulates immune response. During early infection, warming herbs like garlic can help the body mobilise its defenses.
Among the many antiviral herbs and foods, garlic stands out for its versatility. It can be eaten raw, cooked, infused in oils, or used as a supplement. Because of its strong nature, it’s usually taken in small amounts of 1-2 cloves.
Please note that garlic is a blood-thinning herb, so extra caution should be taken if you are on certain medications, etc.
If you’d like to dig deeper into garlic medicinal benefits and safety considerations, we’ve got another post you might like on the health benefits of raw garlic.
2. Oregano (Origanum vulgare)
Oregano is widely known as a culinary herb, but it is also considered one of the strongest antiviral herbs used in herbal medicine.
The essential oil of oregano contains compounds such as carvacrol and thymol, which have attracted scientific attention for their antimicrobial activity. Oregano is frequently included in lists of natural antiviral herbs used to support immune health.
As one of the best antiviral herbs, oregano has a warming and stimulating quality that can be particularly useful during respiratory infections.
Oregano tea is a classic natural cold remedy. The leaves are steeped in hot water, producing a strong, aromatic infusion that many herbalists use during the early stages of illness.
I often suggest oregano tea when someone is looking for cold home remedies that support immune function while soothing the throat.
Oregano essential oil is even more concentrated and is sometimes used as an antiviral herb supplement. However, because essential oils are extremely potent, they must be used carefully and are usually diluted with a carrier oil.
Beyond respiratory illness, oregano is also a great antiviral herb for the skin, particularly used topically for bacterial and fungal infections. Herbalists sometimes dilute oregano essential oil into carrier oils for external use.
Because of its intensity, oregano is best used as a medicinal herb for only short periods. Regular culinary use is fine, but many sources advise against long-term supplementation of high-dose extracts.
3. Elderberry (Sambucus nigra)
Elderberry has become one of the most popular herbs for flu virus and immune support.
The dark purple berries of the elder plant have long been used in European folk medicine as one of the best herbal remedies for flu and respiratory infections.
Elderberry syrups are widely used as flu home remedies because the berries contain compounds called anthocyanins that give them their rich colour. These plant compounds also provide antioxidant support that benefit the immune system.
In my own herbal practice, elderberry syrup is one of my favourite cold flu home remedies during winter months.
The syrup is traditionally prepared by simmering dried elderberries with water, ginger, cinnamon, and honey. You can also use star anise and whichever other herbs you think will complement the flavour. The result is a rich, slightly tart syrup that kids love.
Check out this 21 elderberry recipes post for more fun ideas on how to incorporate elderberry into your diet.
And if you’d like to learn how to make herbal remedies for your family, check out our family herbalist online course here. Lifetime access and new content added every week, currently on sale for the price of an e-book!
Some people take elderberry daily during winter as prevention, and find it very effective. Others use it at the first sign of illness.
Elderberry is also available in capsules, tinctures, and lozenges at many supermarkets and health food stores, making it one of the most accessible antiviral herbs supplements available today.
4. Ginger (Zingiber officinale)
Ginger is another popular remedy that always makes it to a list of antiviral herbs and foods.
Although many people know ginger as a digestive remedy, it is also valued as one of the most effective herbs for viral infections.
Energetically, ginger is considered warming and stimulating.
Ginger supports circulation and helps the body increase perspiration, which is why it appears in many remedies for the flu, as we attempt to “sweat out” the virus.
One of my favourite cold virus home remedies is a classic ginger and lemon tea.
Fresh ginger root is sliced and simmered in water for ten minutes as a decoction. Then remove from the heat and add to a cup with lemon slices. This creates a warming infusion that soothes the throat and supports immune response.
This tea is often combined with honey and lemon to create a comforting remedy for respiratory infections. If you’d like to be prepared with delicious home remedies for when your loved ones get sick, you might just love our Family Herbalist online course.
Ginger is also used in cough and cold home remedies because it can help loosen mucus and soothe irritated tissues.
Beyond respiratory illness, ginger is often listed among herbs for stomach virus due to its well-known ability to calm nausea and soothe digestive discomfort.
5. Echinacea (Echinacea purpurea)
This North American herb is often mentioned in discussions about what herbs fight viral infections, particularly viruses affecting the respiratory system.
Echinacea is frequently included in lists of best antiviral herbs because it stimulates aspects of the immune response, helping the body recognise and respond to pathogens more effectively.
In herbal practice, echinacea is usually taken as a tincture or tea at the first sign of illness. This early stage is when cold virus home remedies tend to work best.
When I first tried echinacea tincture, I was shocked at how the cough and cold symptoms would recede within an hour after taking it! It’s best to always have some on hand in your herbal apothecary.
To create your own herbal remedies and be prepared when the flu next strikes, check out our Family Herbalist course.
When used early, echinacea can help reduce the duration and severity of respiratory infections.
Echinacea helps fight viruses by stimulating the immune system. Compounds in the plant—such as alkamides and polysaccharides—can increase the activity of immune cells like macrophages and natural killer cells, helping the body respond more quickly to viral infections.
Studies on Echinacea’s antiviral activity also suggest Echinacea extracts may interfere with certain viruses’ ability to enter cells or replicate, which could help reduce the severity or duration of respiratory infections like the common cold.
Echinacea is also one of the most common ingredients in antiviral herb supplements, particularly those designed for immune support during cold and flu season.
Herbalists often recommend using it intermittently rather than continuously, as it can lose its effectiveness if taken for too long.
6. Sage (Salvia officinalis)
A popular culinary herb, sage has a long history of use as one of the most reliable antiviral herbs for flu and respiratory infections.
Sage tea is frequently used as a soothing home remedy for cold symptoms.
A warm sage infusion can calm sore throats and soothe irritated tissues, making it one of the most comforting cold natural remedies.
Scientific studies suggest that compounds in sage leaves—such as rosmarinic acid, flavonoids, and essential oils—have antiviral, antimicrobial, and anti-inflammatory properties. These compounds may help inhibit certain viruses and reduce inflammation in the throat and respiratory tract.
Laboratory research has found that sage extracts can interfere with viral replication and support immune defenses, which may help the body respond more effectively to infections.
Because of these properties, sage is often used as a tea, gargle, or tincture for sore throats, coughs, and other mild respiratory infections.
Sage is also used as an antiviral herb for the skin, particularly when applied as a herbal wash.
In traditional European herbal medicine, sage has long been revered as a, “cure-all” and a potent “strengthening herb” used to support resilience, particularly during respiratory infections, fatigue, and general illness.
Many herbalists still include sage in formulas designed for virus home remedies and respiratory infections.
Be sure not to use sage if you’re breastfeeding, as another traditional use is to dry up breast milk when weaning.
7. Peppermint (Mentha piperita)
Peppermint is another popular herb used in common cold home remedies.
The leaves contain high levels of menthol and other volatile oils that affect the respiratory system.
Menthol activates cold-sensing receptors in the nasal passages and throat, which can create a cooling sensation and help make breathing feel easier during congestion. Peppermint tea can help unblock stuffed-up sinuses.
Research also shows peppermint has mild antiviral, antimicrobial, and anti-inflammatory properties, partly due to compounds such as menthol, menthone, and rosmarinic acid.
These substances can help inhibit some microbes while reducing irritation in the airways, which is why peppermint tea, steam inhalations, or lozenges are often used to soothe coughs and support comfort during colds. The steam rising from hot peppermint tea can also help loosen mucus, making breathing easier.
Beyond respiratory benefits, peppermint also supports digestion, which is why it appears in some gastric flu home remedies.
8. Rosemary (Rosmarinus officinalis)
Rosemary is often included among natural antiviral herbs because its leaves contain biologically active compounds such as rosmarinic acid and eucalyptol.
These compounds have been studied for their antiviral, anti-inflammatory, and antioxidant activity, particularly in relation to respiratory pathogens.
When used in cold virus home remedies, rosemary may help in several ways. The volatile oils in the leaves act as mild expectorants, helping loosen mucus in the airways.
At the same time, compounds such as rosmarinic acid can reduce inflammatory signalling in respiratory tissues, which may help ease throat irritation and airway inflammation during viral infections.
Rosemary also contains eucalyptol, the same compound found in eucalyptus and tea tree, and known to support airway function and improve mucus clearance.
This is why rosemary is commonly used in warming herbal teas or steam inhalations during respiratory illness. Inhaling aromatic vapours from rosemary can stimulate airflow through the nasal passages and provide temporary relief from congestion.
Another reason rosemary appears in many antiviral herbs for tea blends is its ability to stimulate circulation. Improved peripheral circulation may help support immune responses by improving the movement of immune cells and inflammatory mediators through tissues during infection.
Because of these properties, rosemary is often combined with other best antiviral herbs such as thyme, sage, and peppermint in herbal teas designed to support the body during colds and respiratory infections.
Click here to read more about Rosemary’s herbal uses.
9. Astragalus (Astragalus membranaceus)
One of the most respected herbs in traditional Chinese medicine, Astragalus is often included in discussions about Chinese herbs for flu and immune resilience.
Unlike some herbs that are taken during acute illness, astragalus is primarily used as a preventative herb, designed to strengthen the immune system before infection occurs.
Astragalus root is widely considered one of the best antiviral herbs for building immune resilience over time. It contains compounds known as polysaccharides and saponins that can support immune cell activity.
One of the traditional ways to use astragalus is by simmering the dried sliced root in soups or broths.
I often suggest astragalus to people who experience frequent winter infections. Instead of waiting until illness begins, strengthening the immune system ahead of time can reduce susceptibility.
Astragalus is also widely available as one of the most popular antiviral herb supplements, often appearing in immune support formulas alongside echinacea and elderberry.
In herbal medicine, this plant is frequently used when discussing how to get rid of viruses naturally, not because it kills viruses directly but because it strengthens the body’s defensive systems.
10. Turkey Tail Mushroom (Trametes versicolor)
Turkey tail mushroom has gained attention as one of the strongest antiviral herbs used in herbal immune-support protocols.
The well-studied primary active compounds in turkey tail are polysaccharide peptides, particularly PSK (polysaccharide-K) and PSP (polysaccharide peptide).
These beta-glucan–rich molecules can stimulate components of the immune system such as macrophages, dendritic cells, and natural killer (NK) cells, helping the body detect and respond to viral pathogens more effectively.
Research suggests these polysaccharides act as immune modulators, meaning they help regulate immune signalling rather than simply stimulating it.
This can improve the coordination of antiviral immune responses, including the release of cytokines involved in viral defence.
Many herbalists include turkey tail in protocols involving herbs with antiviral properties, particularly when the goal is long-term immune support during periods of increased viral exposure.
Turkey tail is typically consumed as a decoction, powdered extract, or concentrated supplement, since the active polysaccharides are best extracted through prolonged boiling or specialised extraction processes.
Read more about turkey tail health benefits in our ultimate guide to turkey tail medicinal uses.
11. Fennel (Foeniculum vulgare)
Fennel seeds are best known for their digestive benefits, but they also appear in many herbal traditions as supportive herbs for viral infection.
Fennel’s aromatic seeds contain compounds that help relax smooth muscle and ease digestive discomfort. Because viral infections often affect digestion, fennel is frequently used in gastric flu home remedies.
When someone is experiencing nausea, bloating, or stomach discomfort during illness, fennel tea can provide gentle relief.
In addition to digestive support, fennel also appears in many antiviral herbs for tea blends designed to soothe the throat and calm irritated tissues.
Herbalists often combine fennel with ginger and peppermint to create comforting teas used in remedies for the flu.
By calming digestion, reducing inflammation and providing nutrition, fennel helps the body conserve energy and recover more efficiently during illness.
12. Sage and Rhubarb Combination
Research has explored this combination for its potential antiviral activity, especially in topical preparations used for cold sores.
Because of this, rhubarb & sage extract is often mentioned as an antiviral treatment for herpes.
Sage contributes antimicrobial and anti-inflammatory properties, while rhubarb root contains compounds that may help inhibit viral replication.
Rhubarb and sage extract was shown to reduce the pain experienced by study participants with cold sores.
Together, these herbs create a fascinating example of how herbal combinations can produce stronger effects than single plants alone.
Topical creams containing rhubarb and sage extracts may also be worth experimenting with as supportive treatment for other viral skin conditions.
13. Elderflower (Sambucus nigra flowers)
While elderberries are widely known for their antiviral properties, elderflowers are also used in herbal medicine as gentle herbs for flu symptoms.
Elderflower tea is one of the classic flu home remedies used to encourage perspiration during fevers.
Herbalists often recommend elderflower tea at the early stages of respiratory infection, when the body is trying to mobilise its immune response.
The flowers contain flavonoids and aromatic compounds that help soothe irritated tissues.
A warm elderflower infusion is soothing for sore throats and congested sinuses, making it one of the simplest sinus cold home remedies.
Discover more ways to enjoy elderflower with our 19 sweet and simple elderflower recipe ideas.
14. Thyme (Thymus vulgaris)
Thyme leaves contain thymol and carvacrol, two phenolic compounds with well-documented antimicrobial and antiviral activity.
Laboratory studies have shown that thymol can disrupt microbial membranes and interfere with the survival of certain respiratory pathogens.
Thyme volatile oils can help reduce microbial load in the respiratory tract and support the body’s natural immune response.
Thyme is particularly useful for coughs and respiratory infections because its essential oils act as mild expectorants and bronchodilators. These effects help loosen mucus in the airways and support more efficient clearance of secretions, which can reduce coughing and chest congestion during viral respiratory illness.
For this reason, thyme is commonly used in cough and cold home remedies, especially as a tea, tincture, syrup or steam inhalation.
You can also keep a bottle of thyme essential oil and inhale it a couple of times a day as a cold preventative. It’s a great way to use essential oils, because that little bottle of essential oil should last you for the rest of your life if you’re not using it for anything else!
For more practical health hacks like this, consider joining the Family Herbalist online course.
When hot water extracts thyme’s aromatic compounds, vapours containing thymol and other volatile oils can help soothe irritated respiratory tissues and support airflow.
15. Lemon Balm (Melissa officinalis)
Lemon balm is one of the herbs I often reach for when someone has a viral illness combined with restlessness or poor sleep.
The leaves contain polyphenols such as rosmarinic acid and caffeic acid derivatives, compounds that have shown antiviral and anti-inflammatory activity in laboratory studies.
Research suggests lemon balm extracts may interfere with how certain viruses attach to host cells, which is one of the early stages of viral infection.
This mechanism has been studied particularly with herpes viruses, but the same polyphenols also have broader antioxidant and immune-modulating effects that may support the body during respiratory infections.
In practice, lemon balm is usually taken as a warm tea or tincture during viral illness.
Beyond its antiviral potential, lemon balm also has mild calming effects on the nervous system, which can be useful when illness disrupts sleep. Good sleep and reduced stress both play important roles in immune recovery.
And if you’d like to learn more about lemon balm, I’ve written a post on lemon balm tea for stress and anxiety
16. Licorice Root (Glycyrrhiza glabra)
Licorice root is one of the most extensively studied medicinal herbs for viral infections.
The main active compound of licorice root, glycyrrhizin, has been investigated for antiviral effects against several viruses, including influenza and SARS-related viruses in laboratory research.
Glycyrrhizin appears to influence the immune system in multiple ways. Studies suggest it can support interferon signalling, reduce inflammatory damage in tissues, and in some cases interfere with viral replication.
Because of these effects, licorice root is often used in traditional herbal formulas designed to support immune resilience during infections.
In herbal practice, licorice is also valued for its demulcent properties. The root contains polysaccharides that soothe irritated mucous membranes in the throat and respiratory tract, which can make it especially helpful for soothing coughs and sore throats. I often include it in herbal tea blends during cold season for both its immune-supporting and soothing effects.
One important note is that licorice should be used in moderation, particularly by people with high blood pressure, because glycyrrhizin can influence electrolyte balance when taken in large amounts.
17. Japanese Knotweed (Polygonum cuspidatum)
Japanese knotweed is best known as one of the richest natural sources of resveratrol, a polyphenol studied for its antioxidant and antiviral effects.
Although the plant is often discussed in the context of Lyme disease protocols, it also has interesting properties relevant to viral infections.
Resveratrol has been studied for its ability to modulate inflammatory pathways and influence viral replication in laboratory models. Viral infections often trigger strong inflammatory responses, and compounds like resveratrol may help regulate those responses while the immune system clears the infection.
In herbal medicine, the root of Japanese knotweed is typically prepared as a decoction or tincture, since many of its active compounds extract better with heat or alcohol.
It can be useful to include small amounts of knotweed in immune formulas for its antioxidant, anti-inflammatory, and circulatory effects, which can support recovery during systemic infections.
18. Olive Leaf (Olea europaea)
Olive leaf has attracted significant scientific interest because it contains oleuropein, a polyphenolic compound with demonstrated antimicrobial and antiviral activity in laboratory research.
Studies suggest oleuropein and related compounds may interfere with viral replication and viral entry into host cells, while also providing antioxidant protection. These mechanisms have been explored in research on respiratory viruses as well as other viral pathogens.
Another reason olive leaf is used in herbal medicine is its ability to support immune and inflammatory balance. Viral infections often involve both viral activity and inflammatory stress in tissues, and the polyphenols in olive leaf appear to influence both processes.
In practice, olive leaf is most commonly used as a tincture, capsule extract, or tea. During viral illness, it is often combined with herbs that support the respiratory tract, creating a more comprehensive herbal approach.
19. Holy Basil (Ocimum sanctum / Tulsi)
Holy basil, also known as tulsi, is an important herb in traditional Ayurvedic medicine and is increasingly studied for its effects on the immune system. The leaves contain eugenol, rosmarinic acid, and various flavonoids, compounds with antioxidant, anti-inflammatory, and antimicrobial properties.
One of the reasons I like holy basil during viral illness is that it acts as both an immune-supportive herb and an adaptogen. Adaptogenic herbs help the body regulate stress responses, which is important because chronic stress can suppress immune function.
Laboratory studies suggest holy basil extracts may influence immune signalling pathways and inflammatory mediators, helping the body mount a balanced response to infection. At the same time, the aromatic oils in the plant can gently support the respiratory system.
Holy basil is commonly used as a warming herbal tea, and during cold or flu season it pairs well with herbs such as ginger, thyme, or peppermint. Beyond its antiviral potential, many people find it helps them feel calmer and more resilient while drinking holy basil tea.
FAQ: Best Antiviral Herbs List
What herbs fight viral infections?
Several medicinal plants contain compounds that can influence how the body responds to viral infections. Common examples include garlic, elderberry, oregano, echinacea, thyme, and astragalus. Many of these herbs contain polyphenols, essential oils, or immune-modulating compounds that may support antiviral immune responses.
Rather than directly eliminating viruses, many herbs with antiviral properties work by supporting immune cell activity, reducing inflammation, or helping the body manage respiratory symptoms, which is why they are often included in virus natural remedies.
What herbs kill virus naturally?
No herb instantly destroys viruses inside the body. Viruses replicate within human cells, which makes them difficult to target directly. However, some of the strongest antiviral herbs—including oregano, thyme, and elderberry—contain compounds that have shown antiviral activity in laboratory studies.
These compounds may interfere with certain stages of viral replication or help the immune system recognise infected cells more effectively. In practice, herbs are usually used to support immune function and reduce symptoms, rather than to directly “kill” viruses.
How to get rid of viruses naturally?
The most effective way to recover from viral infections is to support the body’s immune system while it clears the virus. Adequate sleep, hydration, balanced nutrition, and stress management all play important roles in immune function.
Many traditional approaches also include best antiviral herbs and spices such as garlic, ginger, thyme, and elderberry. These plants may help support immune signalling, reduce inflammation, and ease respiratory symptoms while the body fights the infection.
What herbs are used for flu?
Several herbs are commonly used during influenza and other respiratory viral infections. Popular examples include elderberry, ginger, peppermint, sage, and echinacea.
These plants appear frequently among the best herbs for flu because they may help support immune responses, soothe the respiratory tract, and reduce inflammation. For example, elderberry contains flavonoids studied for antiviral effects, while peppermint and sage contain aromatic compounds that may help relieve congestion.
Are there antiviral herbs for animals?
Yes. In veterinary herbal medicine, some plants with antiviral or immune-supporting properties are occasionally used for animals, particularly under professional supervision. Examples that may be used by veterinary herbalists include echinacea (Echinacea spp.), astragalus (Astragalus membranaceus), elderberry (Sambucus nigra), and medicinal mushrooms such as turkey tail (Trametes versicolor). These herbs are studied for their ability to support immune cell activity, modulate inflammation, or influence antiviral immune responses.
In dogs and sometimes cats, echinacea and astragalus are sometimes used to support immune function during infections, while turkey tail mushroom extracts are used in integrative veterinary medicine for their beta-glucan polysaccharides, which can stimulate immune cells such as macrophages and natural killer cells.
However, herbal use in animals requires caution. Some plants that are safe for humans—such as oregano essential oil or high doses of garlic—can be harmful to pets. Because animals metabolise herbal compounds differently, any antiviral herbs for cats, dogs, or other animals should only be used under the guidance of a qualified veterinarian or veterinary herbalist.
Final thoughts: best antiviral herbs list and cold virus home remedies
The plant world offers an incredible range of natural antiviral herbs that can support the body during illness.
When used wisely, these plants provide valuable cold virus home remedies that complement modern medical care.
From garlic and oregano to elderberry and astragalus, the best antiviral herbs help strengthen immune function, reduce inflammation, and support recovery.
By combining herbal knowledge with good nutrition, rest, and stress management, it’s possible to build a resilient immune system capable of keeping those pesky viruses under control!
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