Medically reviewed by Jamie Johnson, RDN
Garlic contains compounds that may help support immune function.Credit: Kelly Mitchell / Getty Images
Certain herbs and spices may help your body fight an infection or ease symptoms.
Compounds in these plants have anti-inflammatory or antimicrobial effects, which could boost your immune system.
However, research is limited—the actual immune-boosting effects of these herbs and spices is unconfirmed.
When you’re fighting a cold, it may be worth adding some herbs and spices to your diet. Elderberry, turmeric, and other herbs and spices may help boost the immune system due to their antimicrobial and anti-inflammatory properties.
1. Elderberry
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Elderberry is a dark purple berry from the black elder tree that contains a number of anti-inflammatory and antioxidant plant compounds. Some research has suggested it may help lessen the symptoms of colds, flu, or other upper respiratory infections.
A 2016 study found that participants who took an elderberry supplement had shorter colds and reported less severe symptoms, including sore throat, cough, runny nose, and more.
Elderberry is often taken as a supplement, and benefits have been linked to elderberry capsules, lozenges, and extract. It can also be brewed as a tea.
2. Echinacea
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Echinacea, or the purple coneflower, is closely related to daisies and sunflowers. This plant is thought to stimulate the immune system, so many people use it to fight colds or other infections.
Research suggests echinacea has anti-inflammatory and antibacterial properties and may help regulate the body’s immune response in the face of viral infections.
Older studies have found that it can shorten the length of a cold, but these findings are limited, and more research is needed. Some studies have found echinacea doesn’t help people get over a cold.
Echinacea supplements are generally available as capsules or as liquid drops meant to be diluted in water. You can also brew echinacea as a tea.
3. Garlic
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Garlic may have some benefits for the immune system. When garlic is crushed, it releases a compound called allicin that may help the body fight infections.
Some animal studies and small human studies found that garlic or allicin supplements reduced respiratory viral infections and had anti-inflammatory effects. Allicin may also have antioxidant effects, reducing cell damage called oxidative stress that has been linked to chronic disease.
However, there’s still very little research on the immune benefits of garlic. Many people cook with garlic, but it can also be taken as a supplement.
4. Turmeric
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Turmeric is a spice that contains curcumin, a compound responsible for turmeric’s bright color and many of its purported health benefits.
Curcumin has strong antioxidant effects, may help reduce inflammation, and has antibacterial and antiviral properties. For these reasons, turmeric may be able to fight infectious diseases and protect against autoimmune health conditions.
But research on turmeric has its limitations—studies use different amounts of turmeric or combine it with other herbs or spices to enhance its effects in the body. Most studies on the benefits of turmeric also tend to focus on turmeric supplements, as opposed to the spice. Cooking may lower the antioxidant activity of turmeric.
5. Ginger
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Ginger has a long history of being used to help ailments such as gastrointestinal discomfort, asthma, and flu.
Ginger contains a compound called gingerol that has antioxidant and anti-inflammatory properties. The body experiences increased inflammation during an immune response, so anti-inflammatory substances such as ginger may be able to help ease pain and symptoms associated with respiratory infections.
Some research has even found that taking ginger may improve COVID-19 symptoms, but more research is needed.
People can take ginger supplements, make ginger tea, or eat crystallized (or candied) ginger when dealing with cold symptoms.
6. Cinnamon 
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Cinnamon is a warm spice that is popular in sweet dishes and desserts.
It is rich in antioxidants, which may reduce inflammation, and has antimicrobial effects, too. Cinnamon may relieve symptoms of COVID-19, as well as other viral illnesses. Other research suggests it may slow the growth of bacteria such as Salmonella, a common cause of foodborne illness.
Cinnamon supplements are available for a range of conditions. But more research on cinnamon is needed—it’s not currently considered a treatment for any disease.
7. Peppermint 
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Peppermint is an herb rich in antioxidants called flavonoids. It also contains menthol, a cooling compound that helps relieve pain.
Peppermint has antimicrobial and anti-inflammatory properties that may benefit the immune system, although more research is needed.
Not only might peppermint help your body better fight a viral infection, but it can also temporarily relieve some symptoms. Menthol can help soothe a cough, relieve congestion, and make breathing feel a bit easier.
People can take capsules containing peppermint oil or use peppermint leaves to make tea.
8. Paprika 
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Paprika, derived from red pepper, is a spice that may boost your immune system. Paprika is rich in vitamins A, E, and C, which are powerful antioxidants that help the body fight infection.
Vitamin C has been linked to shorter cold duration, while vitamin E and A are both involved in boosting immune system function.
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