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NOW Supplements Vitamin C Crystals
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 2 Reviews
8.7
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
Vitamin C aids chloride transport
Effect of L-ascorbate on chloride transport in freshly excised sinonasal epithelia.
Relevant to sinusitis treatment
We explored the effects of L-ascorbate, commonly known as Vitamin C, on chloride transport in sinonasal epithelial tissues. This research is particularly significant as it addresses the common condition of chronic rhinosinusitis (CRS) and its potential link to the function of the cystic fibrosis transmembrane conductance regulator (CFTR) — a key chloride ion channel.

During our investigation, we utilized freshly excised sinonasal tissues from both normal individuals and patients suffering from CRS. The tissues were carefully prepared and tested to understand how L-ascorbate influenced chloride secretion. Our findings revealed that the application of L-ascorbate notably enhanced chloride secretion in these tissues.

This is important because optimal chloride transport is essential for maintaining healthy mucosal surfaces and effective mucociliary clearance. Therefore, since decreased chloride secretion could lead to the worsening of sinus conditions, L-ascorbate presents a promising avenue for therapeutic intervention in improving mucociliary clearance for those affected by chronic sinus issues.
Read More
8
Vitamin C aids sinusitis recovery
[Clinical and biochemical aspects in the treatment of acute maxillary sinusitis with antioxidants].
Examines mixed antioxidant approach
We evaluated the impact of antioxidants, specifically vitamin C, on acute maxillary sinusitis treatment through a study involving different treatment approaches. Patients received a mix of dibunol and vitamin C, delivered into the sinuses, while others only had traditional treatments like ampicillin and hydrocortisone.

This study involved control groups that helped us compare the effectiveness of the antioxidant treatment. Stunningly, we found that those receiving the antioxidant mixture demonstrated substantial improvements, with shorter treatment times and fewer overall interventions compared to the control group.

Additionally, positive changes in certain blood markers indicated that the antioxidant approach markedly enhanced the body's response to infection. These findings underscore the potential benefits of including vitamin C as part of a sinusitis treatment plan, especially when dealing with acute flare-ups.
Read More

Most Useful Reviews

10
Sinusitis improvement
I love it! I bought a 1g spoon, put it in a container, and take it each morning and evening. Initially, my child struggled to switch from pills to powder, but now he enjoys it with soy milk. He rarely catches a cold and recovers quickly; I used to suffer from sinusitis but it vanished after starting megadoses of vitamin C. I should have bought this sooner!
Read More
8.8
Immediate relief
Simply the best! I previously took it in pill form, but this time opted for powder. It has an immediate effect on my chronic tonsillitis and sinusitis. I'm very pleased with my purchase of this vitamin C!
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
  • All Researches
8
Vitamin C aids chloride transport
Effect of L-ascorbate on chloride transport in freshly excised sinonasal epithelia.
Relevant to sinusitis treatment
We explored the effects of L-ascorbate, commonly known as Vitamin C, on chloride transport in sinonasal epithelial tissues. This research is particularly significant as it addresses the common condition of chronic rhinosinusitis (CRS) and its potential link to the function of the cystic fibrosis transmembrane conductance regulator (CFTR) — a key chloride ion channel.

During our investigation, we utilized freshly excised sinonasal tissues from both normal individuals and patients suffering from CRS. The tissues were carefully prepared and tested to understand how L-ascorbate influenced chloride secretion. Our findings revealed that the application of L-ascorbate notably enhanced chloride secretion in these tissues.

This is important because optimal chloride transport is essential for maintaining healthy mucosal surfaces and effective mucociliary clearance. Therefore, since decreased chloride secretion could lead to the worsening of sinus conditions, L-ascorbate presents a promising avenue for therapeutic intervention in improving mucociliary clearance for those affected by chronic sinus issues.
Read More
8
Vitamin C aids sinusitis recovery
[Clinical and biochemical aspects in the treatment of acute maxillary sinusitis with antioxidants].
Examines mixed antioxidant approach
We evaluated the impact of antioxidants, specifically vitamin C, on acute maxillary sinusitis treatment through a study involving different treatment approaches. Patients received a mix of dibunol and vitamin C, delivered into the sinuses, while others only had traditional treatments like ampicillin and hydrocortisone.

This study involved control groups that helped us compare the effectiveness of the antioxidant treatment. Stunningly, we found that those receiving the antioxidant mixture demonstrated substantial improvements, with shorter treatment times and fewer overall interventions compared to the control group.

Additionally, positive changes in certain blood markers indicated that the antioxidant approach markedly enhanced the body's response to infection. These findings underscore the potential benefits of including vitamin C as part of a sinusitis treatment plan, especially when dealing with acute flare-ups.
Read More

User Reviews

USERS' SCORE
Good
Based on 2 Reviews
8.7
  • All Reviews
  • Positive Reviews
  • Negative Reviews
10
Sinusitis improvement
I love it! I bought a 1g spoon, put it in a container, and take it each morning and evening. Initially, my child struggled to switch from pills to powder, but now he enjoys it with soy milk. He rarely catches a cold and recovers quickly; I used to suffer from sinusitis but it vanished after starting megadoses of vitamin C. I should have bought this sooner!
Read More
8.8
Immediate relief
Simply the best! I previously took it in pill form, but this time opted for powder. It has an immediate effect on my chronic tonsillitis and sinusitis. I'm very pleased with my purchase of this vitamin C!
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