Immune System Boosters - Supplements that Work

What are some effective natural immune system boosters that actually work?

No doubt, your immune system plays an essential role of keeping all the harmful germs such as bacteria, viruses and fungus out of your body.

In additional to eating a balanced diet with lots of fruits and vegetables, there are many natural remedies that can be taken to support the immune system.

Needless to say, a well-tuned immune system is essential for fighting off the common cold all the way to getting rid of cancerous cells.

Indeed, some of the newer anti-cancer medications work by stimulating specific parts of our immune system.

Below is a detailed list of herbs and vitamins that are used by people around the world to support their immune system.

Natural Remedies Immune System Boosters

Natural Remedies What Experts Say...
(Echinacea purpurea)

leaf logo plant natural remedies herb herbal (What's This?)

Echinacea is shown to boost the immune system. This is helpful in shortening the duration of viral or bacterial infections such as the common cold and the flu.

A recent well-designed clinical study showed that echinacea and sage combination was as effective as a prescription mouth rinse for treating sore throat from an infection.

Dose: Take 500 mg four times daily of the raw herb on the first day, then use 250 mg four times daily for up to 10 days. Tincture - Use 2 to 4 mL four to six times daily.  

Vitamin C leaf logo plant natural remedies herb herbal

Vitamin C is used for treating and reducing the duration of the common cold and the flu.

However, larger and better studies showed that it was not any more effective as placebo (sugar pill).

Dose: Take 1,000 to 3,000 mg (1 to 3 grams) daily. Divide into two doses. Higher doses (megadoses) have been used.

Ginseng leaf logo plant natural remedies herb herbal

Ginseng is one of many immune system boosters commonly used in chinese medicine. It is shown in studies that ginseng can support the immune system and help prevent infections.

Dose: Take 100 mg daily to prevent catching the cold. Higher dosages have been used.

See Health Benefits of Ginseng for all full review complete with recommended doses to use.


Some clinical studies show that taking garlic regularly seems to reduce the chance of catching the cold and the flu.

This herb is recommended by experts for keeping the immune system working efficiently.

Dose: Take 200 to 400 mg up to three times daily.

Andrographis leaf logo plant natural remedies herb herbal

Andrographis stimulates the immune system and increases the activity of germ-fighting white blood cells. It also seems to have anti-allergic activities and can be helpful in allergies.

Dose: Take 400 mg three times daily.

Elderberry leaf logo plant natural remedies herb herbal

Elderberry is a rich source of anthocyanidins, tannins, flavonoids and rutin. These chemical substances are known to benefit and regulate the immune system in our body as well as acting as an antioxidant.

Dose: Typical dose used is 15 mL (1 tablespoon) taken up to four times daily.

(Astragalus membranaceus)
leaf logo plant natural remedies herb herbal

Studies show that it can boost the immune system and have a positive effect on the immune cells in our body.

Dose: Dosages used to prevent the cold is 4 to 7 grams daily.

Propolis leaf logo plant natural remedies herb herbal

Propolis extracts seem to help boost the immune system. Some studies completed in children show that it was able to shorten the duration of the common cold.

Dose: Experts suggest taking 500 mg once or twice daily.


Cordyceps is shown to regulate and boost the immune system. It may be helpful in curing viral and bacterial infections.

More studies will need to be done in clinical trials to verify this benefit.

Dose: Take 500 mg two or three times daily.  

Goldenseal leaf logo plant natural remedies herb herbal

Goldenseal may shorten the duration of infections. It possesses antiviral and immune boosting effects in laboratory studies.

Dose: Typical dosage is 4 to 6 grams of the root extract taken up to three times daily.  

Oil of Oregano leaf logo plant natural remedies herb herbal

Oil of oregano shows potent activity against viruses and may be helpful in killing off the virus and bacteria responsible for causing the common cold, the flu or a sore throat.

Dose: Typical dosage used is 500 mg up to four times daily as per manufacturer directions.

Boneset (Eupatorium perfoliatum) leaf logo plant natural remedies herb herbal

In lab studies on cells, boneset seems to boost immune cell functions. It is traditionally used to help cure viral infections and thus can be useful to fight off infections.

Dose: Steep 1 to 2 grams of the herb in 150 mL of boiling water. Drink three times daily.

Extract (1:1) - Use 1 to 2 mL three times daily.  

Probiotics Helpful

Probiotics are helpful in balancing out the immune system. These are natural bateria that lives in the digestive system.

Dose: Take at least 1 billion active cells daily (and up to three times daily) either from lactobacillus fortified yogurt or acidophilus capsules.

Aniseed Blackberry
Borage seed oil
Stinging nettle

These following immune system boosters have been traditionally used to treat the symptoms of the common colds.

Some of these herbs have been shown to have antiviral activities and immune boosting activity in lab studies.

Others, such as blueberry and blackberry show anti-inflammatory benefits and is traditionally used to treat sore throat, common cold and flu symptoms.

If you are thinking of taking supplements to boost your immune system for the purpose of fighting off cancer, see the article Natural Remedies for Cancer to see which supplements are promoted by health care professionals.

What Supplements Do Cancer Patients Take?

Inevitably, this question will surface. We have anticipated this.

We did our research and summarized a list of Natural Cancer Supplements as reported by authorities in the field of complimentary and alternative medicine.

You will find different recommendations as some supplements have been studied for a specific type of cancer while other studies only looked at population trends.

Bottom Line

Looking for effective natural remedies for colon cancer patients?

Selenium, garlic and onions stand as the leader in potentially reducing colon cancer risk.

Green tea, coriolus versicolor, folic acid and fiber are good second choices.

In addition, a diet low in meat, especially well-done, fried or heavily-browned meat seemed to reduce overall risk of colon cancer.

Moreover, higher levels of fat in diets appears to increase the risk of colon cancer, although it would also depend on the genetics of an individual.

Want to find out which supplement helps with cancer in general?

See the article Natural Remedies for Cancer Patients to find out which supplements are best for your situation.

And to see a list of all the articles on specific remedy for cancer, go to Supplements for Cancer.

Related to Immune System Boosters

References for Immune System Boosters

Revised: August 31, 2019