Last update
5/1/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 5 Reviews
8.3
Supplement Facts
Serving Size: 1 Tablet
Amount Per Serving
%DV
Vitamin C (as Ascorbic Acid)
1 g (1,000 mg)
1111%
Rose Hips Powder (Rosa canina) (fruit)
25 mg
†
Top Medical Research Studies
8
We conducted a fully decentralized clinical trial to explore the effects of vitamin C on constipation symptoms. Participants who experienced functional constipation were randomly assigned to receive either Lactobacillus with vitamin C or vitamin C alone over a two-week treatment period. The study allowed us to gather data remotely, which is quite innovative and accessible.
Looking specifically at the results from the group that received vitamin C, we observed that while there was an increase in the frequency of bowel movements compared to the control group, the isolated effect of vitamin C itself wasn't entirely clear. The combination treatment appeared to improve bowel regularity, but it was difficult to determine how much vitamin C contributed independently to these results.
Additionally, we found that about 67% of participants were diligent in tracking their bowel diary entries, which helped ensure the reliability of our findings to an extent. Yet, a significant portion of the records were not kept as scheduled, highlighting potential hurdles in data collection for decentralized trials.
Overall, our observations suggest that while vitamin C, especially when paired with Lactobacillus, may provide some benefits for those struggling with constipation, we should exercise caution before attributing all improvements solely to vitamin C.
Looking specifically at the results from the group that received vitamin C, we observed that while there was an increase in the frequency of bowel movements compared to the control group, the isolated effect of vitamin C itself wasn't entirely clear. The combination treatment appeared to improve bowel regularity, but it was difficult to determine how much vitamin C contributed independently to these results.
Additionally, we found that about 67% of participants were diligent in tracking their bowel diary entries, which helped ensure the reliability of our findings to an extent. Yet, a significant portion of the records were not kept as scheduled, highlighting potential hurdles in data collection for decentralized trials.
Overall, our observations suggest that while vitamin C, especially when paired with Lactobacillus, may provide some benefits for those struggling with constipation, we should exercise caution before attributing all improvements solely to vitamin C.
Read More
Most Useful Reviews
9
Very effective
1 people found this helpful
Vitamin C provides me with energy. When I'm unwell or have been constipated for 2-3 days, I take a big gulp every 3 hours without taking medication. It’s very effective, and I plan to continue taking it for life. Thank you very much.
Read More
7.5
Relieves constipation
2 people found this helpful
I take it with iron, and it effectively helps relieve constipation.
Read More
7.5
Good stool quality
Previously, I was using another brand of C1000, but switched due to stock issues. This suits me well, and I feel great. I take one tablet in the morning and evening, which has resulted in good stools and no constipation. Vitamin C complements biotin perfectly, and while the tablet is slightly large, the benefits are clear!
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
- All Researches
8
We conducted a fully decentralized clinical trial to explore the effects of vitamin C on constipation symptoms. Participants who experienced functional constipation were randomly assigned to receive either Lactobacillus with vitamin C or vitamin C alone over a two-week treatment period. The study allowed us to gather data remotely, which is quite innovative and accessible.
Looking specifically at the results from the group that received vitamin C, we observed that while there was an increase in the frequency of bowel movements compared to the control group, the isolated effect of vitamin C itself wasn't entirely clear. The combination treatment appeared to improve bowel regularity, but it was difficult to determine how much vitamin C contributed independently to these results.
Additionally, we found that about 67% of participants were diligent in tracking their bowel diary entries, which helped ensure the reliability of our findings to an extent. Yet, a significant portion of the records were not kept as scheduled, highlighting potential hurdles in data collection for decentralized trials.
Overall, our observations suggest that while vitamin C, especially when paired with Lactobacillus, may provide some benefits for those struggling with constipation, we should exercise caution before attributing all improvements solely to vitamin C.
Looking specifically at the results from the group that received vitamin C, we observed that while there was an increase in the frequency of bowel movements compared to the control group, the isolated effect of vitamin C itself wasn't entirely clear. The combination treatment appeared to improve bowel regularity, but it was difficult to determine how much vitamin C contributed independently to these results.
Additionally, we found that about 67% of participants were diligent in tracking their bowel diary entries, which helped ensure the reliability of our findings to an extent. Yet, a significant portion of the records were not kept as scheduled, highlighting potential hurdles in data collection for decentralized trials.
Overall, our observations suggest that while vitamin C, especially when paired with Lactobacillus, may provide some benefits for those struggling with constipation, we should exercise caution before attributing all improvements solely to vitamin C.
Read More
User Reviews
USERS' SCORE
Good
Based on 5 Reviews
8.3
- All Reviews
- Positive Reviews
- Negative Reviews
9
Very effective
1 people found this helpful
Vitamin C provides me with energy. When I'm unwell or have been constipated for 2-3 days, I take a big gulp every 3 hours without taking medication. It’s very effective, and I plan to continue taking it for life. Thank you very much.
Read More
7.5
Relieves constipation
2 people found this helpful
I take it with iron, and it effectively helps relieve constipation.
Read More
7.5
Good stool quality
Previously, I was using another brand of C1000, but switched due to stock issues. This suits me well, and I feel great. I take one tablet in the morning and evening, which has resulted in good stools and no constipation. Vitamin C complements biotin perfectly, and while the tablet is slightly large, the benefits are clear!
Read More
7.5
Helps digestion
The quality is acceptable with sufficient ingredients for a mineral supplement. It aids those lacking exercise, alleviating fatigue symptoms. I’ve noticed improvements in fatigue frequency, and it effectively aids digestion, addressing constipation.
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7.5
Easily digestible
Although this is a water-soluble vitamin C, it dissolves slowly. I take it twice daily. The large size was initially daunting, but I eventually got used to it. Drinking it doesn’t cause constipation or rough skin.
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Frequently Asked Questions
9
Very effective
1 people found this helpful
Vitamin C provides me with energy. When I'm unwell or have been constipated for 2-3 days, I take a big gulp every 3 hours without taking medication. It’s very effective, and I plan to continue taking it for life. Thank you very much.
7.5
Good stool quality
Previously, I was using another brand of C1000, but switched due to stock issues. This suits me well, and I feel great. I take one tablet in the morning and evening, which has resulted in good stools and no constipation. Vitamin C complements biotin perfectly, and while the tablet is slightly large, the benefits are clear!
7.5
Relieves constipation
2 people found this helpful
I take it with iron, and it effectively helps relieve constipation.
7.5
Helps digestion
The quality is acceptable with sufficient ingredients for a mineral supplement. It aids those lacking exercise, alleviating fatigue symptoms. I’ve noticed improvements in fatigue frequency, and it effectively aids digestion, addressing constipation.
8
We conducted a fully decentralized clinical trial to explore the effects of vitamin C on constipation symptoms. Participants who experienced functional constipation were randomly assigned to receive either Lactobacillus with vitamin C or vitamin C alone over a two-week treatment period. The study allowed us to gather data remotely, which is quite innovative and accessible.
Looking specifically at the results from the group that received vitamin C, we observed that while there was an increase in the frequency of bowel movements compared to the control group, the isolated effect of vitamin C itself wasn't entirely clear. The combination treatment appeared to improve bowel regularity, but it was difficult to determine how much vitamin C contributed independently to these results.
Additionally, we found that about 67% of participants were diligent in tracking their bowel diary entries, which helped ensure the reliability of our findings to an extent. Yet, a significant portion of the records were not kept as scheduled, highlighting potential hurdles in data collection for decentralized trials.
Overall, our observations suggest that while vitamin C, especially when paired with Lactobacillus, may provide some benefits for those struggling with constipation, we should exercise caution before attributing all improvements solely to vitamin C.
Looking specifically at the results from the group that received vitamin C, we observed that while there was an increase in the frequency of bowel movements compared to the control group, the isolated effect of vitamin C itself wasn't entirely clear. The combination treatment appeared to improve bowel regularity, but it was difficult to determine how much vitamin C contributed independently to these results.
Additionally, we found that about 67% of participants were diligent in tracking their bowel diary entries, which helped ensure the reliability of our findings to an extent. Yet, a significant portion of the records were not kept as scheduled, highlighting potential hurdles in data collection for decentralized trials.
Overall, our observations suggest that while vitamin C, especially when paired with Lactobacillus, may provide some benefits for those struggling with constipation, we should exercise caution before attributing all improvements solely to vitamin C.
References
- Huh KY, Chung WK, Park J, Lee S, Kim MG, et al. Feasibility study for a fully decentralized clinical trial in participants with functional constipation symptoms. Clin Transl Sci. 2023;16:2177. 10.1111/cts.13617
