How to cure the flu with garlic: 6 tips to eliminate the common cold at home

Each year, millions of people experience nasal congestion, sore throat, mild fever, and fatigue due to the flu, especially when the weather is erratic. Many take medication continuously, but their bodies remain sluggish for days, significantly impacting work and daily life. Among the popular folk remedies currently being sought, using garlic to treat the flu is garnering attention because it is easy to implement, cost-effective, and utilizes a familiar ingredient in Vietnamese kitchens.

Garlic contains allicin – a natural compound that can help boost immunity and enable the body to fight bacteria and viruses more effectively. Although not a "complete cure," using garlic correctly can help alleviate discomfort and aid the body in recovering faster from a cold or mild flu. This article will help you understand garlic remedies for the flu, how to use them safely, and important precautions to avoid adverse effects.

Method 1: Home remedies using garlic to treat the flu

Tip 1: Can garlic help reduce flu symptoms?

Research shows that garlic can help alleviate flu symptoms.

Recent studies suggest that garlic can help boost immunity and aid the body in recovering faster from the common cold. In a 3-month study with 146 participants:

• The group using garlic supplements reported only 24 instances of flu symptoms.
• Whereas the group not using garlic had up to 65 instances of colds.
• Those who used garlic also recovered about 1 day earlier.

This indicates that proper use of garlic can help reduce the risk of flu and shorten the duration of fatigue.

Garlic can help the body recover faster.

Another study showed that individuals consuming about 2.56 g of garlic supplements daily experienced:

• Fewer cold symptoms
• Faster recovery
• Reduced fatigue, nasal congestion, and sore throat

Experts suggest that garlic may help the immune system function more effectively by increasing certain important immune cells in the body.

Allicin, an active compound in garlic, is a key factor.

When it comes to using garlic as a flu remedy, many studies focus on allicin—a sulfur-containing compound found in fresh garlic. This is considered the component that helps:

• Support natural antibacterial action
• Reduce the activity of cold-causing viruses
• Enhance the body's protective capabilities against pathogens

In addition to allicin, garlic also contains saponins and amino acid derivatives that may contribute to reducing the viral load in the body, although the exact mechanism is still being further researched.

Garlic should not be considered a "cure" for the flu.

Despite many positive results, experts still believe that more research is needed to confirm the precise effectiveness of garlic in treating the flu. Therefore, using garlic to treat the flu should be seen as a natural supportive method, not a replacement for medication or advice from a doctor.

To achieve better results, you should:

1. Use garlic combined with adequate rest.
2. Drink plenty of warm water.
3. Eat a nutritious diet to boost immunity.
4. Do not overuse garlic in excessively high doses.
5. See a doctor if you have a high fever or symptoms that persist for many days.

Garlic acts like a "secondary shield" for the immune system. It cannot fully fight the flu on its own, but it can help you get through the uncomfortable phase more gently if used correctly.

Tip 2: How to reduce garlic odor when treating the flu

Garlic odor is what many people dislike most when using garlic to treat the flu.

In fact, the pungent compounds that give garlic its distinctive smell are also the components believed to help reduce cold symptoms. Therefore, if you want to reap the benefits of garlic for the immune system, you almost have to accept some of this characteristic odor.

However, this is usually a temporary situation and can be controlled if used correctly.

When you have the flu, resting at home remains a crucial priority.

During a cold or flu, many people often:

• Limit going out to avoid spreading illness.
• Rest more.
• Drink plenty of warm water.
• Reduce contact with crowded places.

This means that garlic odor typically doesn't significantly impact daily life. Compared to a persistent sore throat, nasal congestion, and fatigue, many people consider garlic odor a minor inconvenience if their body recovers faster.

Some ways to help reduce garlic odor after use.

If you are concerned about bad breath, you can try a few simple tips:

• Drink warm water after eating garlic.
• Chew mint leaves or cilantro.
• Brush your teeth and clean your tongue thoroughly.
• Combine garlic with honey or lemon to reduce its pungent odor.
• Do not eat too much raw garlic at once.

These methods can significantly reduce the odor while still retaining the immune-boosting benefits of garlic.

Using garlic correctly is more important than trying to eat a lot.

Many people think that eating more garlic will cure the flu faster, but this is not entirely true. Overusing garlic can cause:

• Stomach burning
• Digestive discomfort
• Persistent bad breath
• Irritation for those with sensitive stomachs

Therefore, an effective way to treat the flu with garlic is to use a moderate amount, regularly, and combine it with adequate rest to allow the body time to recover naturally.

Tip 3: How to eat raw garlic when you have the flu

Prioritize using fresh garlic for better effectiveness.

When applying garlic as a flu remedy, many people choose fresh garlic because its allicin content is usually higher after crushing or mincing. This compound is believed to benefit the immune system and help reduce cold symptoms.

Simple steps to follow:

1. Peel off the thin outer skin.
2. Use a knife or garlic press to crush the garlic clove.
3. Let it sit for about 5–10 minutes before use to allow allicin to form better.
4. Eat about 1 small garlic clove every 3–4 hours if your body tolerates it.

Do not eat too much at once, as it can cause stomach discomfort or indigestion.

Can be taken with orange juice for easier consumption.

Many people cannot tolerate the pungent taste of raw garlic. A common tip is to consume garlic with orange juice to reduce the strong flavor and make it easier to swallow.

You can:

• Mince garlic and quickly drink it with orange juice.
• Or swallow small pieces with water.

The vitamin C in orange juice is also a factor many choose to help boost immunity when they have the flu.

Combining garlic with warm lemon helps soothe the throat.

If you have a sore throat or nasal congestion, you can try a warm mixture of garlic and lemon.

Here's how to make it:

• 2 tablespoons of lemon juice
• About 180–240 ml of warm water
• 1 crushed garlic clove

Stir well and drink in small sips. This mixture is often used as a folk remedy to help warm the body and relieve discomfort during a cold.

Garlic and honey is a method many people apply.

One of the most popular ways to use garlic to treat the flu is to combine it with honey. Honey helps soothe the throat and significantly reduces the pungent taste of garlic.

Here's how to do it:

• Add 1–2 tablespoons of honey to about 180–240 ml of warm water.
• Add minced or crushed garlic.
• Stir well and drink slowly.

Many people prefer this method because it is easier to drink than raw garlic while still benefiting from its immune-boosting properties.

Notes when using raw garlic.

Although using garlic as a flu remedy is quite popular, you should still use it correctly to avoid adverse effects.

Do not use if:

• You have stomach ulcers.
• You have a history of garlic allergy.
• You are taking anticoagulant medication.
• For young children with sensitive digestive systems.

If your flu symptoms persist, you have a high fever, or difficulty breathing, you should see a doctor instead of relying solely on home remedies.

Tip 4: How to cook garlic to treat the flu

Cooked garlic can still help alleviate flu symptoms.

Many people are not used to eating raw garlic due to its pungent smell and spicy taste. In this case, incorporating garlic into daily meals is a simpler and easier approach. Although raw garlic is often considered more potent, cooked garlic still contains beneficial compounds for the immune system if prepared correctly.

To increase effectiveness, you should:

1. Peel the garlic.
2. Crush or mince it.
3. Let it sit for about 10–15 minutes before cooking.

This time allows the enzymes in garlic to activate and promote the formation of allicin—a compound believed to have antibacterial properties and help reduce colds.

You should use a moderate amount of garlic in each meal.

When using garlic to treat the flu, many people typically consume about 2–3 cloves of garlic per meal when feeling unwell or showing mild cold symptoms.

You don't need to eat too much at once. The important thing is to maintain consistency and combine it with adequate rest for your body to recover better.

Add garlic to soup or broth when feeling unwell.

If you have the flu and a poor appetite, warm liquid dishes will be easier to consume.

You can:

• Add minced garlic to chicken broth.
• Add garlic to vegetable soup.
• Cook it with hot porridge or clear soup.

The warmth from the food combined with garlic often helps the body feel more comfortable, especially when experiencing nasal congestion or chills.

Combine garlic with rice and vegetables daily.

Another simple way to use garlic to treat the flu is to add it to familiar dishes:

• Sauté garlic when stir-frying vegetables.
• Add garlic to rice while cooking.
• Mix garlic with tomato sauce or cheese sauce.
• Use garlic in steamed or pan-fried dishes.

This method enhances the flavor of dishes and is suitable for those who don't like to eat garlic directly.

Using garlic when preparing meat makes the dish easier to eat.

You can also rub crushed garlic on:

• Chicken
• Pork
• Fish
• Beef

Then prepare as usual. Garlic not only makes dishes more aromatic but is also a common ingredient in many home-based immune-boosting meal plans.

Avoid cooking garlic for too long at excessively high temperatures.

High temperatures for extended periods can reduce some of the beneficial compounds in garlic. Therefore:

• Add garlic at the end of cooking if possible
• Avoid over-frying the garlic
• Do not cook for too long over high heat

Using garlic correctly is like adding a "warm layer" for the immune system. It doesn't replace flu medication, but it can help the body feel more comfortable during recovery.

Tip 5: Garlic tea to relieve nasal congestion

Garlic tea is a folk remedy to warm the body when you have the flu

When experiencing a cold, nasal congestion, or sore throat, many people choose garlic tea as a way to alleviate discomfort at home. The warm steam from the hot beverage can soothe the throat and temporarily help clear the airways.

Combining garlic with lemon and honey also makes the drink more palatable than eating raw garlic directly.

Simple homemade garlic tea recipe

You can follow these steps:

1. Preparation:
   • 3 cups of water
   • 3 cloves of garlic, halved
   • 1/2 cup of honey
   • 1/2 cup of fresh lemon juice
2. Boil water with garlic
3. When the water boils, turn off the heat and add:
   • Honey
   • Lemon juice
   • You can also add clean lemon peels for enhanced aroma
4. Stir well and let it cool slightly before drinking

This mixture is often used by many when they experience mild cold symptoms or feel tired and cold.

Lemon and honey help enhance flavor and make it easier to drink

One of the reasons garlic tea is popular is its more pleasant taste compared to raw garlic.

In this recipe:

• Lemon provides vitamin C and antioxidants
• Honey helps soothe the throat
• Garlic helps boost natural immunity

This combination creates a warm drink suitable for days when you feel sluggish or when the weather changes.

Strain the tea before drinking

After cooking, you should:

• Strain out the garlic pulp and lemon seeds
• Drink small sips while the tea is still warm
• Can be divided into several servings throughout the day

Do not drink it too hot, as it can irritate the throat further.

Can be stored for same-day use

If there's any left, you can:

• Pour the tea into a clean bottle or jar
• Store it in the refrigerator
• Reheat before drinking

However, it's best to consume it within the same day to ensure better flavor and quality.

Notes when using garlic tea to treat the flu

Even though garlic tea is a popular supportive remedy, you still need to use it appropriately.

Do not use too much if:

• You have stomach pain
• You have acid reflux
• You are allergic to garlic or honey
• You are taking specific medications

If the flu lasts for many days, you have a high fever, or difficulty breathing, you should see a doctor for examination and appropriate treatment.

Tip 6: Garlic supplements to support flu recovery

Garlic supplements are a suitable choice for those who cannot eat raw garlic

Not everyone can tolerate the pungent smell and strong taste of fresh garlic. Therefore, garlic supplements or garlic-derived dietary supplements are chosen by many who want to treat the flu with garlic in a more convenient way.

This supplement form is often suitable for:

• People sensitive to the smell of garlic
• Busy people who find it difficult to prepare fresh garlic daily
• People who want to consume garlic regularly without affecting their breath too much

Dosage often mentioned in studies

Some studies on garlic and the common cold often use about 2–3 grams of garlic per day, divided into multiple doses.

Many people follow these methods:

1. Dividing into 2–3 doses per day
2. Taking it after meals to reduce stomach irritation
3. Using it regularly when experiencing flu symptoms

However, the actual dosage may vary depending on the product because the active ingredient content in each capsule is not the same.

Prioritize products with clear information

When choosing garlic supplements, you should pay attention to:

• Transparent origin and source
• Clear ingredient disclosure
• Specific content of allicin or garlic extract
• Within expiration date and properly stored

Avoid choosing dubious products or those with exaggerated claims such as "completely curing the flu."

Garlic supplements do not replace medication

Despite their convenience, garlic supplements should only be considered as a supportive method to boost immunity and alleviate discomfort during a mild cold. Effectiveness may vary depending on each individual's constitution.

To help your body recover better, you still need to:

• Get enough rest
• Drink plenty of water
• Eat a nutritious diet
• Monitor symptoms carefully

If you have a high fever, persistent cough, or difficulty breathing, you should see a doctor instead of self-medicating with supplements for a prolonged period.

Do not overuse garlic supplements

Excessive use can cause:

• Bloating
• Stomach burning
• Bad breath
• Digestive discomfort

Individuals taking anticoagulants or with digestive conditions should consult a healthcare professional before regular use.

Garlic supplements are like a "silent assistant" for the immune system. They can support the body during a mild cold, but sustainable effectiveness still comes from proper healthcare and rest.

Method 2: Cold symptoms and how to cure them completely

Step 1: Understand the common cold correctly

The common cold is primarily caused by viruses

Many people think colds appear from being in the rain, sleeping with air conditioning, or cold weather. In reality, the most common cause is a virus, especially rhinovirus – the agent that often causes upper respiratory tract infections.

This type of virus often affects the:

• Nose
• Throat
• Sinuses
• Upper respiratory tract

In some cases, the virus can also spread to the lower respiratory tract and make symptoms more severe.

Colds often erupt strongly when the weather changes

Rhinoviruses are more prevalent during:

• Seasonal transitions
• Cold weather
• Rainy season or end of the year
• Periods of erratic temperature changes

This is also when the number of people searching for homemade flu remedies, ways to boost immunity, and how to treat the flu with garlic increases sharply online.

The cold virus spreads very quickly

One of the reasons colds are so common is that the virus spreads rapidly, especially in crowded places like:

• Schools
• Offices
• Buses
• Shopping malls

Viruses typically spread through:

1. Droplets from coughing or sneezing
2. Close contact with someone who has a cold
3. Touching surfaces contaminated with the virus and then touching your eyes, nose, or mouth

Just being near someone with a cold at a short distance significantly increases the risk of infection.

Symptoms usually appear quite quickly

After exposure to the virus, the incubation period is usually short, about:

• 12 to 72 hours

Many people begin to experience symptoms such as:

• Nasal congestion
• Frequent sneezing
• Sore throat
• Runny nose
• Mild fatigue

Symptoms are usually clearer in the first few days.

Not all colds require antibiotics

Since colds are primarily caused by viruses, antibiotics are usually ineffective in most common cases. What's more important is:

• Getting enough rest
• Drinking plenty of water
• Keeping the body warm
• Eating a nutritious diet
• Supporting natural immunity

This is also why many people turn to supportive measures like ginger tea, honey, or how to cure the flu with garlic to help the body feel more comfortable during recovery.

Prevention is still more important than cure

To reduce the risk of catching a cold, you should:

• Wash your hands frequently
• Wear a mask when necessary
• Get enough sleep
• Avoid close contact with people who have colds
• Maintain a diet that boosts immunity

A healthy immune system is like the body's "raincoat." When your resistance is good, viruses may still be around you, but the chances of your body being overwhelmed will be much lower.

Step 2: Identifying cold symptoms

Dry nose and sore throat are often the first signs

In the early stages, the common cold often appears quite subtly. Many people only feel:

• Dry nose
• Itchy or scratchy nose
• Mild sore throat
• Throat discomfort when swallowing

These are early signs that the body is reacting to the cold virus.

Symptoms often become clearer after 2–3 days

After the initial signs, cold symptoms usually worsen over the next few days.

Patients may experience:

1. Runny nose
2. Nasal congestion
3. Frequent sneezing
4. Fatigue
5. Difficulty concentrating

Nasal discharge is usually clear and thin at first, then may become thicker and turn light yellow or yellowish-green.

Colds are not just about nasal congestion

In addition to common symptoms, many people also experience:

• Headache
• Body aches
• Watery eyes
• Facial and ear pressure due to sinus congestion
• Reduced sense of smell and taste
• Cough or hoarseness

Some people may cough so much that they feel nauseous or vomit after a prolonged coughing fit.

Young children often show different symptoms than adults

In children, especially preschoolers, colds are sometimes accompanied by:

• Irritability
• Fussiness
• Difficulty sleeping
• Mild fever

Parents often confuse common colds with other respiratory illnesses, so it's important to monitor closely if children have a high fever or prolonged loss of appetite.

Colds can lead to complications if neglected

Although most cases improve on their own after a few days, colds can still cause complications in some people with weakened immune systems.

Common problems include:

• Middle ear infection
• Sinusitis
• Prolonged bronchitis
• Worsening of asthma symptoms

Older adults, young children, and people with underlying respiratory conditions need to be especially careful.

When to see a doctor?

You should see a doctor if you experience any of the following signs:

• Persistent high fever
• Shortness of breath
• Chest pain
• Persistent severe cough
• Symptoms worsening after a few days
• Unusual exhaustion

Besides rest and adequate hydration, many people also use supportive measures such as garlic, honey, or warm tea to relieve discomfort during the initial stage of a cold. However, these are only supportive solutions and do not replace medical treatment when the illness worsens.

Step 3: How to relieve cold symptoms

There is currently no cure for the common cold

The common cold is primarily caused by viruses, so there is currently no immediate definitive treatment. Most cases will improve on their own after a few days with proper rest and care.

Instead of trying to "cut short" the illness quickly with various medications, it is more important to help the body alleviate symptoms and recover naturally.

Adequate rest helps the body recover faster

When you have the flu or a cold, your body needs more energy to fight off the virus.

You should:

• Get enough sleep
• Avoid staying up late
• Avoid overworking
• Keep your body warm, especially in cold weather

Proper rest is like giving your immune system "repair time" after a viral attack.

Drinking plenty of water helps reduce fatigue and clear nasal passages

One of the most effective ways to support cold recovery is to stay adequately hydrated.

You can use:

• Plain water
• Warm water
• Fruit juice
• Electrolyte drinks
• Vegetable broth or chicken broth

Warm beverages help the body feel more comfortable and temporarily relieve nasal congestion.

Chicken soup is recommended by many experts

Many studies show that chicken soup can help cold sufferers feel better.

This dish is often beneficial because:

• Easy to digest
• Helps keep the body warm
• Provides hydration and nutrition
• Helps thin mucus

You can add garlic, ginger, or vegetables to enhance flavor and help boost natural immunity.

Gargling with warm salt water helps soothe a sore throat

If your throat feels raw or uncomfortable, try gargling with warm salt water.

How to do it:

1. Mix warm water with an appropriate amount of salt
2. Gargle for about 20–30 seconds
3. Repeat several times a day

This method helps reduce dryness and irritation in the throat and makes swallowing more comfortable.

Lozenges or cough remedies can be used

If a severe cough makes it difficult to sleep or causes prolonged fatigue, you can consider:

• Throat lozenges
• Throat spray
• Over-the-counter cough suppressants

However, you should read the instructions carefully and avoid prolonged overuse of cold medications.

Use cold medicine correctly to avoid adverse effects

When using pain relievers or over-the-counter cold medications, it is necessary to:

• Follow the dosage on the packaging
• Do not combine multiple medications on your own
• Be cautious with people with underlying medical conditions or young children

If symptoms worsen instead of improving, you should see a doctor for an accurate diagnosis.

Natural supportive tips can help the body feel more comfortable

In addition to rest and adequate hydration, many people also use:

• Garlic for cold treatment
• Drinking ginger tea
• Warm lemon honey
• Light steaming

These measures do not replace medical treatment, but can help reduce discomfort and support the body's recovery in the early stages of a cold.

Step 4: When to see a doctor for the flu?

Not all cold cases can be cured at home

Most common colds will improve after a few days of rest and proper care. However, in some cases, symptoms may be a warning sign that the illness is becoming more serious.

Recognizing the right time to seek medical attention is crucial to avoid dangerous complications, especially in young children and people with weakened immune systems.

High fever is a symptom that requires special attention

You should contact a doctor if:

• Fever above 38°C in adults
• Children under 6 months old have a fever
• Children have a fever of 40°C or higher at any age

Prolonged high fever may be related to a more severe infection, not just a common cold.

Symptoms lasting too long may be a sign of abnormality

Typically, a cold will gradually improve within about 7–10 days.

If symptoms such as:

• Nasal congestion
• Cough
• Sore throat
• Fatigue

persist for more than 10 days without improving, you should see a doctor to check for the risk of:

• Sinusitis
• Bronchitis
• Respiratory infection
• Allergies or other medical conditions

Severe symptoms should not be ignored

Some signs that require early medical attention include:

1. Severe headache
2. Nausea or severe vomiting
3. Shortness of breath
4. Chest tightness/pain
5. Wheezing
6. Unusual exhaustion

These could be signs that the illness is no longer just a mild common cold.

Young children and older adults need closer monitoring

Groups vulnerable to complications include:

• Infants
• Elderly people
• People with asthma
• People with lung or heart disease
• People with weakened immune systems

In these individuals, the flu or cold can progress more rapidly and have a greater impact on health.

Do not rely solely on folk remedies

Many people use garlic, honey, or ginger tea to help relieve symptoms at home. These can be helpful solutions to make the body more comfortable during the mild stage.

However, if the body shows unusual signs or the illness lasts for many days, seeing a doctor is still the safer option.

Sometimes, a cold is just like a small rain shower passing over the body. But if the "health sky" shows prolonged unusual signals, you should get checked early to prevent that rain from becoming a storm.

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Content edited by: Rowan Hudson Le.

Information consulted and verified by expert: Katherine Morgan.