Overview

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 4 Reviews
8.8
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
Vitamin C aids chloride transport
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
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 gone
I always ensure I have vitamin C on hand. Since I started taking it, my sinusitis has disappeared completely, and I haven’t had a throat infection since.
Read More
9.5
Cold prevention
Knowing about Fujikawa Theory, I've been taking this for approximately three years. Although it may synergise with protein and other factors, my previous cycle of colds leading to sinusitis or bronchitis, which occurred five times a year, has vanished.
Read More
9.5
Effective vitamin C
This is my first experience with ascorbic acid from iHerb. When the coronavirus began to spread, I promptly decided to purchase vitamin C, D, and zinc. Initially, there was a shortage, but this ascorbic acid was among the first available, and I quickly bought it. Although it's simply ascorbic acid, not Ester-C or liposomal form, it truly WORKS! My husband and I take it once daily after breakfast, alongside 2000 IU of vitamin D. We experienced no side effects and actually feel more energetic. Previously, I would face sinusitis in the autumn, but I had no issues this time. I believe the vitamin C, along with D, made the difference.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
  • All Researches
8
Vitamin C aids chloride transport
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
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 4 Reviews
8.8
  • All Reviews
  • Positive Reviews
  • Negative Reviews
10
Sinusitis gone
I always ensure I have vitamin C on hand. Since I started taking it, my sinusitis has disappeared completely, and I haven’t had a throat infection since.
Read More
9.5
Cold prevention
Knowing about Fujikawa Theory, I've been taking this for approximately three years. Although it may synergise with protein and other factors, my previous cycle of colds leading to sinusitis or bronchitis, which occurred five times a year, has vanished.
Read More
9.5
Effective vitamin C
This is my first experience with ascorbic acid from iHerb. When the coronavirus began to spread, I promptly decided to purchase vitamin C, D, and zinc. Initially, there was a shortage, but this ascorbic acid was among the first available, and I quickly bought it. Although it's simply ascorbic acid, not Ester-C or liposomal form, it truly WORKS! My husband and I take it once daily after breakfast, alongside 2000 IU of vitamin D. We experienced no side effects and actually feel more energetic. Previously, I would face sinusitis in the autumn, but I had no issues this time. I believe the vitamin C, along with D, made the difference.
Read More
8.8
Sinusitis relief
My affection for vitamin C is immense. With weak immunity and constant nasal issues leading to sinusitis, these struggles with green mucus are now behind me. Whenever I felt a sneeze coming on, a dose of vitamin C would help prevent illness, and even if I did get sick, it was more tolerable.
Read More

Frequently Asked Questions

Sinusitis, commonly referred to as a sinus infection, is the inflammation of the sinus cavities, which can cause various uncomfortable symptoms. This condition occurs when the nasal passages and sinuses become swollen or inflamed, often due to infections, allergies, or irritants. The sinuses, which are air-filled spaces located within the bones surrounding the nose, can become congested and trapped with mucus, leading to pain, pressure, and difficulty breathing. Symptoms may include a runny or stuffy nose, headache, facial tenderness, fever, and a reduced sense of smell and taste.

There are two main types of sinusitis: acute and chronic. Acute sinusitis typically lasts for a short period, often following a cold or respiratory infection, while chronic sinusitis can persist for several months or longer, often requiring medical intervention. Treatment options may include over-the-counter medications for symptom relief, nasal sprays, or, in some cases, antibiotics if a bacterial infection is suspected. If sinusitis becomes a recurring issue, it is advisable to consult a healthcare professional for a thorough evaluation and tailored treatment plan.

Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that plays a critical role in numerous bodily functions. As an essential nutrient, it contributes to the growth and repair of tissues in the body, and it is vital for the production of collagen, an important protein that helps maintain skin, cartilage, tendons, ligaments, and blood vessels. Additionally, Vitamin C acts as a powerful antioxidant, which means it helps combat free radicals—unstable molecules that can cause oxidative stress and contribute to various chronic diseases.

Moreover, Vitamin C enhances iron absorption from plant-based foods, making it a vital component for those following vegetarian or vegan diets. While many people get sufficient Vitamin C from a well-balanced diet that includes fruits and vegetables like oranges, strawberries, kiwi, broccoli, and bell peppers, some individuals might require supplementation. It's generally recommended to stay within the daily intake guidelines, as excessive consumption can lead to gastrointestinal disturbances. Overall, Vitamin C is not just a skincare celebrity—it's a fundamental part of maintaining overall health and well-being.

Vitamin C is renowned for its role in supporting the immune system, which has led many to wonder if it can be beneficial for conditions like sinusitis. While vitamin C may not directly cure sinusitis, it can help bolster your overall immune response, potentially reducing the duration or severity of respiratory infections that can lead to sinus issues. Some studies suggest that higher levels of vitamin C can help maintain mucosal immunity, which may aid in keeping your sinuses healthier and less prone to inflammation or infection.

However, it's essential to note that while getting adequate vitamin C through diet—such as from fruits and vegetables like oranges, strawberries, and bell peppers—can be beneficial for overall health, relying solely on supplementation is not necessarily a guaranteed remedy for sinusitis. Traditional treatments for sinusitis usually focus on addressing the underlying infection or inflammation, and vitamin C should be viewed as a supportive measure rather than a primary treatment. If you are experiencing symptoms of sinusitis, it's best to consult a healthcare professional for tailored advice.

Based on user reviews, the timeline for seeing results from taking vitamin C for sinusitis can vary. Many users report significant improvements relatively quickly. For instance, one user mentions their sinusitis disappeared completely after starting vitamin C, while another notes a remarkable reduction in their frequency of sinusitis episodes after using it for three years, suggesting that long-term use may yield cumulative benefits (Read Review) (Read Review).

Additionally, several users indicated that they felt immediate positive effects, such as avoiding illnesses associated with sinus issues after they began supplementing with vitamin C. One customer pointed out that they faced no sinus problems during the autumn after consistent use, implying that effects can be felt within a season (Read Review). Overall, individual experiences may vary, but many users suggest that benefits can be noticeable within a few weeks to months depending on the consistency of use.

Scientific research supports the use of Vitamin C as a beneficial supplement for sinusitis, particularly for conditions like chronic rhinosinusitis (CRS) and acute maxillary sinusitis. A study demonstrated that L-ascorbate (Vitamin C) significantly enhanced chloride secretion in sinonasal tissues, which is crucial for maintaining healthy mucosal surfaces and effective mucociliary clearance. This suggests that replenishing Vitamin C could help improve the condition of individuals suffering from chronic sinus issues, making it a promising avenue for treatment [1].

Furthermore, another study explored the effectiveness of antioxidants, including Vitamin C, in treating acute maxillary sinusitis. Patients receiving a combination of dibunol and Vitamin C showed substantial improvements compared to those undergoing traditional treatments alone. They experienced shorter treatment times and fewer interventions, indicating that Vitamin C might enhance the body's response to sinus infections. These findings highlight the potential for including Vitamin C in sinusitis treatment plans, especially during acute flare-ups [2].

Users have reported a range of significant improvements in their sinusitis symptoms after incorporating vitamin C into their daily regimen. For example, one user shared that since they began taking vitamin C, their sinusitis completely disappeared, and they haven’t had a throat infection since (Read Review). Another long-term user noted that after three years of use, their recurring episodes of colds leading to sinusitis or bronchitis, which used to occur five times a year, have completely ceased (Read Review).

Additionally, anecdotal experiences suggest that users feel an increase in energy levels and better overall health. One couple reported taking vitamin C alongside other supplements and experienced no sinus problems during a typically troublesome autumn season (Read Review). Others noted a marked reduction in nasal issues, with one individual revealing that their persistent green mucus problems were alleviated, allowing them to manage mild illnesses more effectively (Read Review). While individual results may vary, the consensus among these users is that vitamin C can lead to noticeable improvements in sinus health and overall wellness.

Users have shared positive experiences when combining vitamin C with other supplements for managing sinusitis symptoms. One reviewer noted that taking vitamin C alongside vitamin D has contributed to their improved health, resulting in no sinus issues during a typically problematic autumn season. They believe that the combination made a significant difference in their well-being, leading to increased energy levels and better overall immunity (Read Review).

Another user mentioned that while they have been using vitamin C for several years, they also considered its synergy with other factors, suggesting that it may work well in conjunction with proteins or other nutrients to enhance immune response and prevent recurrent sinusitis and bronchitis (Read Review). Overall, while users report various individual experiences, many suggest that combining vitamin C with other supplements can yield substantial improvements in sinus health and mitigate symptoms.

The optimal dose of Vitamin C for treating sinusitis isn't explicitly stated in the research data provided. However, the studies highlight the positive impacts of Vitamin C, particularly in enhancing chloride secretion in sinonasal tissues, which can aid in mucociliary clearance, crucial for those suffering from chronic rhinosinusitis [1]. Another study demonstrates its effectiveness in acute maxillary sinusitis when used as part of a mixture with dibunol, showing substantial improvements in symptoms and treatment times [2].

Although these studies indicate the beneficial role of Vitamin C in sinusitis management, specific dosage recommendations are not detailed. As always, it's best to consult with a healthcare professional for personalized advice on supplementation and treatment regimens tailored to individual health needs.

10
Sinusitis gone
I always ensure I have vitamin C on hand. Since I started taking it, my sinusitis has disappeared completely, and I haven’t had a throat infection since.
9.5
Cold prevention
Knowing about Fujikawa Theory, I've been taking this for approximately three years. Although it may synergise with protein and other factors, my previous cycle of colds leading to sinusitis or bronchitis, which occurred five times a year, has vanished.
9.5
Effective vitamin C
This is my first experience with ascorbic acid from iHerb. When the coronavirus began to spread, I promptly decided to purchase vitamin C, D, and zinc. Initially, there was a shortage, but this ascorbic acid was among the first available, and I quickly bought it. Although it's simply ascorbic acid, not Ester-C or liposomal form, it truly WORKS! My husband and I take it once daily after breakfast, alongside 2000 IU of vitamin D. We experienced no side effects and actually feel more energetic. Previously, I would face sinusitis in the autumn, but I had no issues this time. I believe the vitamin C, along with D, made the difference.
8.8
Sinusitis relief
My affection for vitamin C is immense. With weak immunity and constant nasal issues leading to sinusitis, these struggles with green mucus are now behind me. Whenever I felt a sneeze coming on, a dose of vitamin C would help prevent illness, and even if I did get sick, it was more tolerable.
8
Vitamin C aids chloride transport
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.
8
Vitamin C aids sinusitis recovery
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.

References

  1. Cho DY, Hwang PH, Illek B. Effect of L-ascorbate on chloride transport in freshly excised sinonasal epithelia. Am J Rhinol Allergy. 2009;23:294. doi:10.2500/ajra.2009.23.3316
  2. Nikolaev MP, Logunov AI, Tsyrulńikova LG, Dzhalilov DS. [Clinical and biochemical aspects in the treatment of acute maxillary sinusitis with antioxidants]. Vestn Otorinolaringol. 1994.
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