Overview
SCIENTIFIC SCORE
Questionable
Based on 2 Researches
6.5
USERS' SCORE
Moderately Good
Based on 27 Reviews
7.8
Supplement Facts
Serving Size: 2 Capsules
Amount Per Serving
%DV
Proprietary Probiotic BlendLacticaseibacillus rhamnosus R0011Lactobacillus helvetius R0052Pediococcus acidilactici R1001Lacticaseibacillus casei R0215Bifidobacterium longum BB536Lactiplantibacillus plantarum R1012Bifidobacterium breve R0070Lactococcus lactis subsp. lactis R1058
131 mg (10 Billion CFU)
†
Top Medical Research Studies
8
We looked into how GCL1815, a type of lactic acid bacterium, might aid in preventing the common cold. In our randomized, double-blind study with 200 participants, we found that those who took GCL1815 capsules for eight weeks had significantly lower symptoms of colds, like fatigue and nasal congestion, compared to those on placebo. We also observed key immune responses related to dendritic cell activation that were notably more enhanced in participants taking GCL1815. This suggests that GCL1815 is promising in boosting the body’s defenses against the cold.
Read More
5
We conducted a pilot study to explore the effects of heat-sterilized Lactobacillus crispatus strain KT-11 on immune function in healthy adults. Over four weeks, 22 participants took either KT-11 or a placebo. We observed that those taking KT-11 had higher counts of certain immune cells and reported fewer cold-like symptoms, particularly fatigue. However, there were no significant increases in antibodies related to SARS-CoV-2. This indicates potential benefits of KT-11 for immune activity, suggesting further studies on its effectiveness are warranted.
Read More
Most Useful Reviews
9
Essential for travel
5 people found this helpful
A lifesaver while travelling. I took this daily on a three-week European trip where two companions caught a cold with a terrible cough. I never got sick, as these probiotics kept my immune system strong and my digestive system regular. I'm grateful for Jarrow and this remarkable product.
Read More
10
Long-term health
3 people found this helpful
I love this product! It has kept me healthy for 2.5 years, not even a cold during that time. This is my favourite product, and the price keeps me returning for more. Its efficacy is unmatched, and I feel the benefits every day.
Read More
9
Family friendly
2 people found this helpful
These probiotics are exceptionally high quality, suitable for both adults and children. We take them as a family during the cold season, and I've noticed they effectively maintain our immunity. I strongly recommend them!
Read More
Medical Researches
SCIENTIFIC SCORE
Questionable
Based on 2 Researches
6.5
- All Researches
8
We looked into how GCL1815, a type of lactic acid bacterium, might aid in preventing the common cold. In our randomized, double-blind study with 200 participants, we found that those who took GCL1815 capsules for eight weeks had significantly lower symptoms of colds, like fatigue and nasal congestion, compared to those on placebo. We also observed key immune responses related to dendritic cell activation that were notably more enhanced in participants taking GCL1815. This suggests that GCL1815 is promising in boosting the body’s defenses against the cold.
Read More
5
We conducted a pilot study to explore the effects of heat-sterilized Lactobacillus crispatus strain KT-11 on immune function in healthy adults. Over four weeks, 22 participants took either KT-11 or a placebo. We observed that those taking KT-11 had higher counts of certain immune cells and reported fewer cold-like symptoms, particularly fatigue. However, there were no significant increases in antibodies related to SARS-CoV-2. This indicates potential benefits of KT-11 for immune activity, suggesting further studies on its effectiveness are warranted.
Read More
User Reviews
USERS' SCORE
Moderately Good
Based on 27 Reviews
7.8
- All Reviews
- Positive Reviews
- Negative Reviews
9
Essential for travel
5 people found this helpful
A lifesaver while travelling. I took this daily on a three-week European trip where two companions caught a cold with a terrible cough. I never got sick, as these probiotics kept my immune system strong and my digestive system regular. I'm grateful for Jarrow and this remarkable product.
Read More
10
Long-term health
3 people found this helpful
I love this product! It has kept me healthy for 2.5 years, not even a cold during that time. This is my favourite product, and the price keeps me returning for more. Its efficacy is unmatched, and I feel the benefits every day.
Read More
9
Family friendly
2 people found this helpful
These probiotics are exceptionally high quality, suitable for both adults and children. We take them as a family during the cold season, and I've noticed they effectively maintain our immunity. I strongly recommend them!
Read More
10
Reduces illness severity
1 people found this helpful
Amazing results! This is the only supplement I've tried that truly works. I have often been sick, but since taking probiotics, I've had fewer illnesses and when I do get sick, my symptoms and duration have decreased. After catching a cold that would have previously sidelined me, it merely gave me a stuffy nose for a few days—no significant mucus buildup. I can't believe I found something that genuinely works!
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9
Ceased cold
1 people found this helpful
It is a place I’ve been visiting for about five years. My stomach condition has improved considerably. I feel as though I have ceased a cold.
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Frequently Asked Questions
10
Infections gone
I was quite impressed; after the worst cold I've had in years and a serious case of bronchial asthma requiring antibiotics, I ordered this product. After five days of taking 2 in the morning and 2 at night, all infections are gone. I'm ecstatic that something finally works!
10
Long-term health
3 people found this helpful
I love this product! It has kept me healthy for 2.5 years, not even a cold during that time. This is my favourite product, and the price keeps me returning for more. Its efficacy is unmatched, and I feel the benefits every day.
7.5
Rapid recovery
I always trust and purchase Jarrow Lactobacillus as the bacteria count is reliable. Having taken these for years, they’ve significantly helped my immunity and health. I used to live with a slight cold, but now I recover quickly.
9
Family friendly
2 people found this helpful
These probiotics are exceptionally high quality, suitable for both adults and children. We take them as a family during the cold season, and I've noticed they effectively maintain our immunity. I strongly recommend them!
7.5
Miracle probiotic
2 people found this helpful
I had been struggling with chronic digestive issues, and after many failed attempts with other products, this one worked miracles. If I felt a cold or discomfort, I would take four tablets, and they consistently help. I’m committed to buying these probiotics as they significantly enhance my health.
7.5
Reduced colds
This product has genuinely been a lifesaver for me. Since I began taking it, I’ve experienced fewer colds and illnesses.
7.5
Seasonal support
I take these probiotics for the entire family, including my grandchildren. They help everyone manage seasonal colds during autumn and winter. A healthy gut is vital for immunity, so I also add prebiotics like bran for better results. Here’s to good health!
9
Prevented illnesses
Excellent probiotics! Several times it has helped us to avoid getting sick; at the first sign of a cold, I drink one capsule at night.
6
Healthy gut
I rarely even get a cold. EPS is a brilliant way to maintain gut health. I’ve been taking one capsule daily on an empty stomach for years, helping me maintain good health.
5
We conducted a pilot study to explore the effects of heat-sterilized Lactobacillus crispatus strain KT-11 on immune function in healthy adults. Over four weeks, 22 participants took either KT-11 or a placebo. We observed that those taking KT-11 had higher counts of certain immune cells and reported fewer cold-like symptoms, particularly fatigue. However, there were no significant increases in antibodies related to SARS-CoV-2. This indicates potential benefits of KT-11 for immune activity, suggesting further studies on its effectiveness are warranted.
8
We looked into how GCL1815, a type of lactic acid bacterium, might aid in preventing the common cold. In our randomized, double-blind study with 200 participants, we found that those who took GCL1815 capsules for eight weeks had significantly lower symptoms of colds, like fatigue and nasal congestion, compared to those on placebo. We also observed key immune responses related to dendritic cell activation that were notably more enhanced in participants taking GCL1815. This suggests that GCL1815 is promising in boosting the body’s defenses against the cold.
References
- Watanabe I, Suzuki N, Takara T. Supplementation with heat-sterilized Lactobacillus crispatus strain KT-11 stimulates the T cell-related immune function of healthy Japanese adults: A pilot randomized, placebo-controlled, double-blind, parallel-group study. Nutr Res. 2025;134:99. doi:10.1016/j.nutres.2024.12.004
- Wada H, Mawatari T, Saito Y, Azuma N, Iwama Y. Induces Two Types of Dendritic Cell Activation and Effectively Suppresses Onset of the Common Cold: A Randomized, Double-Blind, Placebo-Controlled Trial. Nutrients. 2024;17. doi:10.3390/nu17010101
