Last update
5/7/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Moderately Good
Based on 7 Reviews
7.4
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
Vitamin C (as Ascorbic Acid)
320 mg
356%
Calcium (from Calcium Carbonate)
36 mg
3%
Grape Seed Extract (Vitis vinifera) (min. 90% Total Polyphenols)
100 mg
†
Top Medical Research Studies
8
We conducted a thorough evaluation of how vitamin C, when combined with pleuran, impacts asthma control and respiratory issues in children suffering from perennial asthma. The study was meticulously designed as a double-blind, placebo-controlled trial involving 230 children aged 7 to 17 years. This means that neither the participants nor the researchers knew who was receiving the active treatment or the placebo, ensuring the findings were reliable.
The results were promising, especially for children under 12 years. They showed significant improvements in asthma control compared to those receiving only the placebo treatment. Meanwhile, older children (12 years and above) experienced fewer respiratory infections with the combination treatment. Overall, by the end of the 48 weeks, a majority of children on the pleuran and vitamin C treatment reported better asthma control compared to those on the placebo.
While the combination of pleuran and vitamin C was indeed beneficial for managing asthma, we must note that the study did not specifically isolate the effect of vitamin C alone on allergies or asthma. Thus, it is hard to draw definitive conclusions about vitamin C's effectiveness independently from pleuran. However, the approach suggested that using these supplements together could offer a helpful boost in managing asthma symptoms.
The results were promising, especially for children under 12 years. They showed significant improvements in asthma control compared to those receiving only the placebo treatment. Meanwhile, older children (12 years and above) experienced fewer respiratory infections with the combination treatment. Overall, by the end of the 48 weeks, a majority of children on the pleuran and vitamin C treatment reported better asthma control compared to those on the placebo.
While the combination of pleuran and vitamin C was indeed beneficial for managing asthma, we must note that the study did not specifically isolate the effect of vitamin C alone on allergies or asthma. Thus, it is hard to draw definitive conclusions about vitamin C's effectiveness independently from pleuran. However, the approach suggested that using these supplements together could offer a helpful boost in managing asthma symptoms.
Read More
Most Useful Reviews
9
Effective relief noted
Eating a row alleviates various allergic symptoms such as urticaria and allergic rhinitis; it effectively regulates immunity and significantly improves allergies.
Read More
9
Highly recommended supplement
Since I started using this product alongside quercetin, I've noticed improvements, particularly regarding my allergies to mites and ragweed. I highly recommend it; it’s a high-quality supplement.
Read More
7.5
Enhanced immune response
This product greatly boosts my immune system and aids in skin healing. It helps combat free radicals, resulting in fewer allergy symptoms.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
- All Researches
8
We conducted a thorough evaluation of how vitamin C, when combined with pleuran, impacts asthma control and respiratory issues in children suffering from perennial asthma. The study was meticulously designed as a double-blind, placebo-controlled trial involving 230 children aged 7 to 17 years. This means that neither the participants nor the researchers knew who was receiving the active treatment or the placebo, ensuring the findings were reliable.
The results were promising, especially for children under 12 years. They showed significant improvements in asthma control compared to those receiving only the placebo treatment. Meanwhile, older children (12 years and above) experienced fewer respiratory infections with the combination treatment. Overall, by the end of the 48 weeks, a majority of children on the pleuran and vitamin C treatment reported better asthma control compared to those on the placebo.
While the combination of pleuran and vitamin C was indeed beneficial for managing asthma, we must note that the study did not specifically isolate the effect of vitamin C alone on allergies or asthma. Thus, it is hard to draw definitive conclusions about vitamin C's effectiveness independently from pleuran. However, the approach suggested that using these supplements together could offer a helpful boost in managing asthma symptoms.
The results were promising, especially for children under 12 years. They showed significant improvements in asthma control compared to those receiving only the placebo treatment. Meanwhile, older children (12 years and above) experienced fewer respiratory infections with the combination treatment. Overall, by the end of the 48 weeks, a majority of children on the pleuran and vitamin C treatment reported better asthma control compared to those on the placebo.
While the combination of pleuran and vitamin C was indeed beneficial for managing asthma, we must note that the study did not specifically isolate the effect of vitamin C alone on allergies or asthma. Thus, it is hard to draw definitive conclusions about vitamin C's effectiveness independently from pleuran. However, the approach suggested that using these supplements together could offer a helpful boost in managing asthma symptoms.
Read More
User Reviews
USERS' SCORE
Moderately Good
Based on 7 Reviews
7.4
- All Reviews
- Positive Reviews
- Negative Reviews
9
Effective relief noted
Eating a row alleviates various allergic symptoms such as urticaria and allergic rhinitis; it effectively regulates immunity and significantly improves allergies.
Read More
9
Highly recommended supplement
Since I started using this product alongside quercetin, I've noticed improvements, particularly regarding my allergies to mites and ragweed. I highly recommend it; it’s a high-quality supplement.
Read More
7.5
Enhanced immune response
This product greatly boosts my immune system and aids in skin healing. It helps combat free radicals, resulting in fewer allergy symptoms.
Read More
7.5
Reduces itchiness
2 people found this helpful
They help lessen my allergies. I experience itchy eyes, and this reduces that sensation. Although the effect doesn't last as long as an antihistamine, I feel better taking grape seed as it's a natural alternative.
Read More
2
No effect
1 people found this helpful
Sadly, I experienced digestive upset with this product. Starting with just one pill every other day, I felt very nauseous. I hadn’t changed anything else in my diet, so it must have been these. I was hoping it would help with seasonal allergies, but it didn’t.
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Frequently Asked Questions
9
Highly recommended supplement
Since I started using this product alongside quercetin, I've noticed improvements, particularly regarding my allergies to mites and ragweed. I highly recommend it; it’s a high-quality supplement.
7.5
Reduces itchiness
2 people found this helpful
They help lessen my allergies. I experience itchy eyes, and this reduces that sensation. Although the effect doesn't last as long as an antihistamine, I feel better taking grape seed as it's a natural alternative.
0
No results observed
1 people found this helpful
I haven't noticed any benefits so far. These are quite expensive, and I expected to feel results by now. There's been no help with my allergies whatsoever.
9
Effective relief noted
Eating a row alleviates various allergic symptoms such as urticaria and allergic rhinitis; it effectively regulates immunity and significantly improves allergies.
7.5
Enhanced immune response
This product greatly boosts my immune system and aids in skin healing. It helps combat free radicals, resulting in fewer allergy symptoms.
7.5
Dosage adjustments suggested
I take GS for allergies - just one daily. During high allergen periods, I'll take up to four. Recently, I read that taking GS with B-complex and InositolCholine can enhance amino acid synthesis efficiency. It's remarkable how GS impacts enzyme production.
References
- Jesenak M, Hrubisko M, Chudek J, Bystron J, Rennerova Z, et al. Beneficial effects of pleuran on asthma control and respiratory tract-infection frequency in children with perennial asthma. Sci Rep. 2025;15:7146. 10.1038/s41598-025-91830-2
