Last update
3/26/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 6 Reviews
8.1
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
L-Glutamine (Free-Form)
1 g (1,000 mg)
**
Top Medical Research Studies
8
L-glutamine aids flu vaccine response
This study examined the impact of L-glutamine supplementation on immune responses to the flu vaccine among 84 elderly participants, some engaged in regular exercise.
After vaccination, those receiving L-glutamine alongside exercise exhibited improved antibody levels and immune cell presence compared to those on a placebo.
Overall, we found that both L-glutamine and combined exercise training contributed to stronger immune reactions in older adults receiving the flu vaccine.
After vaccination, those receiving L-glutamine alongside exercise exhibited improved antibody levels and immune cell presence compared to those on a placebo.
Overall, we found that both L-glutamine and combined exercise training contributed to stronger immune reactions in older adults receiving the flu vaccine.
Read More
Most Useful Reviews
9
Acid reflux relief
1 people found this helpful
After taking glutamine, my severe reflux esophagitis symptoms were immediately alleviated. It's beneficial for muscles, so it's the right nutrition for me. I try to consume it on an empty stomach as often as possible.
Read More
9
Very satisfied
I bought a product recommended on YouTube to alleviate reflux esophagitis, and I am extremely satisfied!
Read More
7.5
Effective treatment
It has significantly reduced my acid reflux.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
- All Researches
8
L-glutamine aids flu vaccine response
This study examined the impact of L-glutamine supplementation on immune responses to the flu vaccine among 84 elderly participants, some engaged in regular exercise.
After vaccination, those receiving L-glutamine alongside exercise exhibited improved antibody levels and immune cell presence compared to those on a placebo.
Overall, we found that both L-glutamine and combined exercise training contributed to stronger immune reactions in older adults receiving the flu vaccine.
After vaccination, those receiving L-glutamine alongside exercise exhibited improved antibody levels and immune cell presence compared to those on a placebo.
Overall, we found that both L-glutamine and combined exercise training contributed to stronger immune reactions in older adults receiving the flu vaccine.
Read More
User Reviews
USERS' SCORE
Good
Based on 6 Reviews
8.1
- All Reviews
- Positive Reviews
- Negative Reviews
9
Acid reflux relief
1 people found this helpful
After taking glutamine, my severe reflux esophagitis symptoms were immediately alleviated. It's beneficial for muscles, so it's the right nutrition for me. I try to consume it on an empty stomach as often as possible.
Read More
9
Very satisfied
I bought a product recommended on YouTube to alleviate reflux esophagitis, and I am extremely satisfied!
Read More
7.5
Effective treatment
It has significantly reduced my acid reflux.
Read More
7.5
Boosted immunity
I'm pleased to be taking this product. I use it nearly daily and have noticed a boost in my immune system. Issues that usually cause problems for me are no longer troubling. I feel strong and healthy so far. The real test will be this winter, but I trust I'll remain well regardless of weather fluctuations. I rated it 4 stars only because I am also taking other supplements, which I believe work together.
Read More
6
Prevents flu
This great supplement has been my go-to for years—it aids recovery and keeps me from getting colds or flu. NOW is one of the best quality supplements I've ever used, and I trust the ingredients are pure.
Read More
Frequently Asked Questions
9
Acid reflux relief
1 people found this helpful
After taking glutamine, my severe reflux esophagitis symptoms were immediately alleviated. It's beneficial for muscles, so it's the right nutrition for me. I try to consume it on an empty stomach as often as possible.
7.5
Effective treatment
It has significantly reduced my acid reflux.
9
Very satisfied
I bought a product recommended on YouTube to alleviate reflux esophagitis, and I am extremely satisfied!
7.5
Boosted immunity
I'm pleased to be taking this product. I use it nearly daily and have noticed a boost in my immune system. Issues that usually cause problems for me are no longer troubling. I feel strong and healthy so far. The real test will be this winter, but I trust I'll remain well regardless of weather fluctuations. I rated it 4 stars only because I am also taking other supplements, which I believe work together.
6
Gradual improvement
I am diligently trying this medication for reflux esophagitis. While I can't tell if it's solely due to the medicine, I feel my reflux esophagitis is improving gradually.
6
Prevents flu
This great supplement has been my go-to for years—it aids recovery and keeps me from getting colds or flu. NOW is one of the best quality supplements I've ever used, and I trust the ingredients are pure.
References
- Monteiro FR, Roseira T, Amaral JB, Paixão V, Almeida EB, et al. Combined Exercise Training and l-Glutamine Supplementation Enhances Both Humoral and Cellular Immune Responses after Influenza Virus Vaccination in Elderly Subjects. Vaccines (Basel). 2020;8. 10.3390/vaccines8040685
Data last updated:
