Last update
5/21/2025
Research Authors

Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 1 Research
7
USERS' SCORE
Good
Based on 27 Reviews
8.4
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
Astragalus Root Extract(Astragalus membranaceus) (Standardized to min 70% Polysaccharides) 
500 mg
**

Top Medical Research Studies

7
Astragaloside IV lowers H1N1 inflammation
We investigated the effects of astragalus root, specifically a compound known as astragaloside IV (AS-IV), on H1N1 infection, which can cause severe respiratory issues. The key focus was on how AS-IV impacts autophagy, a process cells use to manage inflammation.

In our findings, AS-IV enhanced the formation of autophagosomes, cell structures that help clean up trash within cells, in the context of H1N1 infection. This was significant because H1N1 often leads to an overwhelming release of inflammatory substances, known as a cytokine storm, which can worsen pneumonia symptoms. Surprisingly, while AS-IV didn't impact viral replication or levels of pro-inflammatory proteins, it did significantly lower the secretion of interleukin-1 beta (IL-1β), a key inflammatory marker.

Overall, our study suggests that AS-IV could be helpful in reducing harmful inflammation during H1N1 infection, promoting autophagy activation as a potential avenue for treatment. However, it's crucial to note that the research did not isolate AS-IV's effectiveness specifically as a flu treatment. This leaves some questions remaining about its overall impact on flu symptoms.

Most Useful Reviews

9
Boosts immune function
109 people found this helpful
It flushed everything out of me the second night. I bought this to boost my immune system during flu season, as I do not take flu shots. I caught a cold and took this with Carlson Zinc and Vitamin C. After three days of treatment, my cold vanished quickly, and I experienced no antihistamines or cough syrup. I also had a menopausal itch, which is now gone. This will remain a staple in my homeopathic arsenal!
9
Best flu prevention
108 people found this helpful
Astragalus is the best preventative for flu. Goldenseal is effective post-infection. I use one a day and haven't had flu, cold, or virus for years! This brand is fantastic too.
7.5
Enhances immunity
6 people found this helpful
Great product for enhancing my immune system! I use it with my other supplements daily to see if it’s needed. If I notice early cold or flu symptoms, such as muscle aches or fatigue, I take it immediately and my symptoms vanish.

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 1 Research
7
  • All Researches
7
Astragaloside IV lowers H1N1 inflammation
We investigated the effects of astragalus root, specifically a compound known as astragaloside IV (AS-IV), on H1N1 infection, which can cause severe respiratory issues. The key focus was on how AS-IV impacts autophagy, a process cells use to manage inflammation.

In our findings, AS-IV enhanced the formation of autophagosomes, cell structures that help clean up trash within cells, in the context of H1N1 infection. This was significant because H1N1 often leads to an overwhelming release of inflammatory substances, known as a cytokine storm, which can worsen pneumonia symptoms. Surprisingly, while AS-IV didn't impact viral replication or levels of pro-inflammatory proteins, it did significantly lower the secretion of interleukin-1 beta (IL-1β), a key inflammatory marker.

Overall, our study suggests that AS-IV could be helpful in reducing harmful inflammation during H1N1 infection, promoting autophagy activation as a potential avenue for treatment. However, it's crucial to note that the research did not isolate AS-IV's effectiveness specifically as a flu treatment. This leaves some questions remaining about its overall impact on flu symptoms.

User Reviews

USERS' SCORE
Good
Based on 27 Reviews
8.4
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Boosts immune function
109 people found this helpful
It flushed everything out of me the second night. I bought this to boost my immune system during flu season, as I do not take flu shots. I caught a cold and took this with Carlson Zinc and Vitamin C. After three days of treatment, my cold vanished quickly, and I experienced no antihistamines or cough syrup. I also had a menopausal itch, which is now gone. This will remain a staple in my homeopathic arsenal!
9
Best flu prevention
108 people found this helpful
Astragalus is the best preventative for flu. Goldenseal is effective post-infection. I use one a day and haven't had flu, cold, or virus for years! This brand is fantastic too.
7.5
Enhances immunity
6 people found this helpful
Great product for enhancing my immune system! I use it with my other supplements daily to see if it’s needed. If I notice early cold or flu symptoms, such as muscle aches or fatigue, I take it immediately and my symptoms vanish.
10
Family health maintained
5 people found this helpful
Since taking this, my family hasn't experienced a cold or flu for over a year!
9
Effective flu relief
2 people found this helpful
Great flu symptoms remedy! This product eliminated my runny nose and clogged ears in just three days. Whenever I feel unwell, I take it, and my symptoms vanish in a matter of days.

Frequently Asked Questions

9
Effective flu relief
2 people found this helpful
Great flu symptoms remedy! This product eliminated my runny nose and clogged ears in just three days. Whenever I feel unwell, I take it, and my symptoms vanish in a matter of days.
9
Boosted immunity
This NOW hit product effectively alleviates the flu and fortifies the immune system. Taking two pills twice daily helped me return to full health.
9
Immunity boost alternative
Instead of a flu vaccine, I take this brand of astragalus extract three times a day from September to March, providing a sufficient immunity boost to avoid colds and flu for many years. Highly recommend!
7.5
Flu fighting aid
2 people found this helpful
Good for flu! I've been suffering from a persistent winter flu, and Astragalus has significantly helped my body fight back. This product works excellently.
7.5
Immunity booster
2 people found this helpful
Excellent! The product we've purchased has greatly boosted our immunity, and we haven't experienced any colds or flu since incorporating it into our daily routine. We will continue taking it. Thank you for providing such an excellent product!
9
Quick flu remedy
This excellent product is of very high quality compared to others I've tried. I take it when I feel ill, and with three daily doses for three days, the flu goes away. It has greatly benefited me; I used to have respiratory illnesses every month.
9
Flu protection
I take Astragalus for immune system support. Since adding it to my regimen alongside other supplements and vitamins, I’ve stayed healthy and have not contracted the flu or Covid. A quality product from a reputable company.
9
Winter protection essential
6 people found this helpful
Disease protection is key! We order this in winter to shield the body from colds and dampness. It fits well with anti-inflammatory treatments and has proven effective in treating persistent coughs. Indispensable for colds and flu, and also serves as a tonic to restore the liver post-hepatitis and enhance heart function!
9
Family wellness
1 people found this helpful
My wife, son, and I take astragalus daily, and we feel well and free from flu. I recommend it.
7.5
Colds and flu remedy
2 people found this helpful
Very good! Astragalus extract serves as a blood booster, combats ageing, and works well for colds and flu. I take 3 of the 500 mg capsules daily and have found it prevents any cold. After having knee problems, the pain subsided considerably.
7
Astragaloside IV lowers H1N1 inflammation
We investigated the effects of astragalus root, specifically a compound known as astragaloside IV (AS-IV), on H1N1 infection, which can cause severe respiratory issues. The key focus was on how AS-IV impacts autophagy, a process cells use to manage inflammation.

In our findings, AS-IV enhanced the formation of autophagosomes, cell structures that help clean up trash within cells, in the context of H1N1 infection. This was significant because H1N1 often leads to an overwhelming release of inflammatory substances, known as a cytokine storm, which can worsen pneumonia symptoms. Surprisingly, while AS-IV didn't impact viral replication or levels of pro-inflammatory proteins, it did significantly lower the secretion of interleukin-1 beta (IL-1β), a key inflammatory marker.

Overall, our study suggests that AS-IV could be helpful in reducing harmful inflammation during H1N1 infection, promoting autophagy activation as a potential avenue for treatment. However, it's crucial to note that the research did not isolate AS-IV's effectiveness specifically as a flu treatment. This leaves some questions remaining about its overall impact on flu symptoms.

References

  1. Zhang J, Zhang W, Ren L, He Y, Mei Z, et al. Astragaloside IV attenuates IL-1β secretion by enhancing autophagy in H1N1 infection. FEMS Microbiol Lett. 2020;367. 10.1093/femsle/fnaa007
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