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NOW Supplements Vitamin C Crystals
SCIENTIFIC SCORE
Moderately Effective
Based on 3 Researches
8
USERS' SCORE
Good
Based on 1 Review
8.3
Supplement Facts
Serving Size:  1/4 Level Teaspoon (1.1 g)
Amount Per Serving
%DV
Vitamin C (Ascorbic Acid)
1.1 g (1,100 mg) 
1222% 

Top Medical Research Studies

8
Ascorbic Acid and Dizziness Study
Change of extracellular ascorbic acid in the brain cortex following ice water vestibular stimulation: an on-line electrochemical detection coupled with in vivo microdialysis sampling.
Moderate relevance to dizziness
We explored how ice water vestibular stimulation affects ascorbic acid (AA) levels in the brain, particularly in relation to dizziness. Using a method called in vivo microdialysis coupled with electrochemical detection, we monitored changes in extracellular AA in the primary somatosensory area of guinea pigs. Our study included 16 guinea pigs divided into three groups: one group received ice water stimulation, while the other two were exposed to warm water and ice water without vestibular input.

The results revealed that the concentration of extracellular AA increased in the brain following the ice water stimulation. This finding suggests that there may be neurochemical responses associated with AA that play a role in managing conditions like vertigo. However, while the study shows an intriguing relationship between AA levels and vestibular stimulation, it does not establish a direct link between vitamin C's effectiveness in treating dizziness specifically.

Overall, the insights gained from this research could help pave the way for further investigations into the role of vitamin C in vertigo-related treatments, adding a layer of understanding to its neurochemical functions.
Read More
8
Ascovertin alleviates dizziness symptoms
[Clinical efficacy of a novel hemorheological drug ascovertin in patients with vascular encephalopathy].
Vitamin C's isolated effect unclear
We investigated the effectiveness of ascovertin, a combination of flavonoid dihydroquercetin and vitamin C, in patients experiencing dizziness due to vascular encephalopathy linked to atherosclerosis. The study included 21 participants who received ascovertin over a 21-day period, compared to a control group of 10 patients who did not receive the treatment.

Through our observations, we found that those taking ascovertin reported relief from headaches, reduced feelings of vertigo, and less fatigue. Additionally, cognitive functions showed noticeable improvement in the treatment group.

Importantly, we also observed a significant decrease in whole blood viscosity, attributed to better cellular behavior, such as reduced aggregation of red blood cells and enhanced red blood cell flexibility. This effect was not present in the control group, suggesting that ascovertin may play a beneficial role in managing symptoms related to dizziness. However, it's essential to note that we cannot isolate the effect of vitamin C from the overall treatment effect.

Therefore, while ascovertin appears to help those experiencing dizziness related to vascular issues, the specific contribution of vitamin C alone to this improvement remains unclear.
Read More
8
Vitamin C's mixed results on dizziness
Radical scavengers for Ménière's disease after failure of conventional therapy: a pilot study.
Limited specific benefit observed
We sought to assess the effectiveness of radical scavengers, including vitamin C, in treating dizziness related to Ménière's disease (MD). In a pilot trial involving 25 patients experiencing poorly controlled MD, participants took rebamipide, vitamin C, and/or glutathione for at least 8 weeks.

The results were promising overall. Among 22 evaluated patients, we observed that 21 experienced marked improvement in their vertigo symptoms. Additionally, there were improvements in hearing disorders and tinnitus for some participants. However, it is important to note that vitamin C was part of a broader treatment regimen, and its specific effects on dizziness were not assessed independently. Hence, we cannot conclusively attribute the benefits seen solely to vitamin C.

Overall, while the combination therapy showed potential, further research is needed to isolate the impact of vitamin C on dizziness in MD, providing a more definitive understanding.
Read More

Most Useful Reviews

6.5
Dizziness alleviated
Really, really. However, there are some vitamin effects. The dizziness has disappeared, in any case.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 3 Researches
8
  • All Researches
8
Ascorbic Acid and Dizziness Study
Change of extracellular ascorbic acid in the brain cortex following ice water vestibular stimulation: an on-line electrochemical detection coupled with in vivo microdialysis sampling.
Moderate relevance to dizziness
We explored how ice water vestibular stimulation affects ascorbic acid (AA) levels in the brain, particularly in relation to dizziness. Using a method called in vivo microdialysis coupled with electrochemical detection, we monitored changes in extracellular AA in the primary somatosensory area of guinea pigs. Our study included 16 guinea pigs divided into three groups: one group received ice water stimulation, while the other two were exposed to warm water and ice water without vestibular input.

The results revealed that the concentration of extracellular AA increased in the brain following the ice water stimulation. This finding suggests that there may be neurochemical responses associated with AA that play a role in managing conditions like vertigo. However, while the study shows an intriguing relationship between AA levels and vestibular stimulation, it does not establish a direct link between vitamin C's effectiveness in treating dizziness specifically.

Overall, the insights gained from this research could help pave the way for further investigations into the role of vitamin C in vertigo-related treatments, adding a layer of understanding to its neurochemical functions.
Read More
8
Ascovertin alleviates dizziness symptoms
[Clinical efficacy of a novel hemorheological drug ascovertin in patients with vascular encephalopathy].
Vitamin C's isolated effect unclear
We investigated the effectiveness of ascovertin, a combination of flavonoid dihydroquercetin and vitamin C, in patients experiencing dizziness due to vascular encephalopathy linked to atherosclerosis. The study included 21 participants who received ascovertin over a 21-day period, compared to a control group of 10 patients who did not receive the treatment.

Through our observations, we found that those taking ascovertin reported relief from headaches, reduced feelings of vertigo, and less fatigue. Additionally, cognitive functions showed noticeable improvement in the treatment group.

Importantly, we also observed a significant decrease in whole blood viscosity, attributed to better cellular behavior, such as reduced aggregation of red blood cells and enhanced red blood cell flexibility. This effect was not present in the control group, suggesting that ascovertin may play a beneficial role in managing symptoms related to dizziness. However, it's essential to note that we cannot isolate the effect of vitamin C from the overall treatment effect.

Therefore, while ascovertin appears to help those experiencing dizziness related to vascular issues, the specific contribution of vitamin C alone to this improvement remains unclear.
Read More
8
Vitamin C's mixed results on dizziness
Radical scavengers for Ménière's disease after failure of conventional therapy: a pilot study.
Limited specific benefit observed
We sought to assess the effectiveness of radical scavengers, including vitamin C, in treating dizziness related to Ménière's disease (MD). In a pilot trial involving 25 patients experiencing poorly controlled MD, participants took rebamipide, vitamin C, and/or glutathione for at least 8 weeks.

The results were promising overall. Among 22 evaluated patients, we observed that 21 experienced marked improvement in their vertigo symptoms. Additionally, there were improvements in hearing disorders and tinnitus for some participants. However, it is important to note that vitamin C was part of a broader treatment regimen, and its specific effects on dizziness were not assessed independently. Hence, we cannot conclusively attribute the benefits seen solely to vitamin C.

Overall, while the combination therapy showed potential, further research is needed to isolate the impact of vitamin C on dizziness in MD, providing a more definitive understanding.
Read More

User Reviews

USERS' SCORE
Good
Based on 1 Review
8.3
  • All Reviews
  • Positive Reviews
  • Negative Reviews
6.5
Dizziness alleviated
Really, really. However, there are some vitamin effects. The dizziness has disappeared, in any case.
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