Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 11 Researches
7.9
USERS' SCORE
Good
Based on 6 Reviews
8.1
Supplement Facts
Serving Size:  1 Tablet
Amount Per Serving
%DV
Vitamin C (as Ascorbic Acid)
500 mg
556%
Rose Hips Powder (Rosa canina) (fruit)
40 mg

Top Medical Research Studies

We observed an intriguing case involving a 4.5-year-old boy who developed significant knee pain due to a rare nutritional deficiency, scurvy. This condition stemmed from his exclusive intake of meat over the past two years, resulting in skeletal issues and inflammation in multiple joints, including his knees.

Upon examination, the child exhibited several symptoms, including pain, swelling, and an inability to walk. Standard blood tests primarily indicated anemia, but X-rays revealed alarming conditions related to scurvy, such as delayed bone age and severe osteopenia. This alarming picture led us to the conclusion that vitamin C deficiency was the underlying culprit behind his knee pain and skeletal issues.

After initiating vitamin C therapy, we noted a remarkable reduction in pain and swelling over the next two months. The child’s condition improved significantly, allowing him to walk again, and follow-up X-rays confirmed the positive changes in his bone health. This case clearly illustrates how vitamin C can effectively alleviate knee pain related to scurvy and reinforces the importance of proper nutrition for overall skeletal health.
Read More
We observed a case involving a man in his 60s with a history of head and neck cancer who presented with unexplained pain in his left knee and bruising in both his upper and lower limbs, symptoms that had been ongoing for about three weeks. Further tests revealed that his blood showed signs of normocytic anemia and slightly abnormal clotting, yet no major inflammatory issues were found.

Upon examination of his knee, we found blood in the joint, known as haemarthrosis, and a crucial lab test indicated that he had an undetectable level of vitamin C in his blood. This led to a diagnosis of scurvy, a condition caused by severe vitamin C deficiency, which we identified as the underlying reason for his joint bleeding.

After starting vitamin C supplementation along with dietary changes and managing his pain with acetaminophen, the patient's vitamin C levels returned to normal. Excitingly, his knee pain and swelling improved significantly. This case sheds light on scurvy as a rare but important cause of knee pain and discomfort, especially in patients at risk, showing that effective treatment is available.
Read More
We designed a prospective randomized study to explore how vitamin C may prevent complex regional pain syndrome (CRPS) in patients recovering from total knee arthroplasty (TKA). This condition often manifests after surgery, causing persistent pain that can severely affect recovery. To evaluate vitamin C's effectiveness, we compared one group of patients receiving vitamin C to another group that did not.

During the research, we included a total of 292 patients, with 153 in the vitamin C group and 139 in the control group. We tracked the incidence of CRPS, applying both the Budapest criteria and bone scintigraphy to make accurate diagnoses.

Our findings revealed a significant difference: only 3.9% of patients in the vitamin C group developed CRPS, compared to 12.2% in the control group. This led us to conclude that taking 1 gram of vitamin C daily for 40 days following TKA can effectively reduce the risk of developing CRPS.

In simple terms, it appears that vitamin C can serve as a valuable preventive measure against chronic pain after knee surgery, providing hope for those aiming to recover smoothly.
Read More

Most Useful Reviews

7.5
Reduces inflammation
2 people found this helpful
I feel very well taking this product. It reduces my pains and overall inflammation, along with decreasing headaches. It's easy to swallow and I carry a smaller bottle as a travel size in my purse. At the first sign of sickness, I take it until I feel better, sometimes in a larger dose. I'm taking it on a daily basis, 1-2 grams. I love the rose hip addition; it works great and doesn't irritate my stomach, even when taken on an empty stomach. :)
Read More
9
Pain relief effectiveness
1 people found this helpful
Whenever I or a family member feels a faint pain in the throat, which typically means a cold is coming, we take a Now C-500 pill with rose hips, and within a few hours the pain is gone. Now, not only my home but also my parents' and my sister's family are purchasing the same bottle. We will continue this routine.
Read More
9
Joint pain relief
I began taking vitamin C tablets after learning about their benefits in reducing inflammation. After a few weeks, I've noticed a significant decrease in my joint pain. I would definitely recommend these tablets to anyone looking for ways to alleviate inflammation.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 11 Researches
7.9
  • All Researches
9.5
Vitamin C improves knee pain
We observed a fascinating case involving a previously healthy three-year-old boy who presented with acute knee pain. Initially, his doctors diagnosed him with transient synovitis, assuming this common condition would resolve on its own. However, the situation took a turn when he returned with worsening pain and new symptoms, including a rash and significant bruising.

Through careful examination and testing, we identified that the root cause of his discomfort was vitamin C deficiency, likely due to inadequate dietary intake. This finding was confirmed through blood tests, leading to a targeted treatment with oral vitamin C.

Within six weeks of starting the vitamin C supplementation, we noted a remarkable turnaround in his health. His knee pain and other symptoms nearly vanished as he engaged in a balanced diet to prevent future deficiencies. This case highlights the important connection between vitamin C levels and joint health, reminding us how critical nutrition is to overall well-being, especially in children.
Read More
We examined the potential benefits of high-dose intravenous vitamin C for relieving knee pain in a patient suffering from Chikungunya fever. The patient, a 54-year-old Hispanic individual, reported symptoms that included left shoulder and knee pain along with fever. Symptoms began abruptly during the night on a Saturday in September 2014.

The treatment involved administering high doses of vitamin C over two days. Remarkably, after the infusion, the patient's symptoms resolved without experiencing any side effects. This case suggests that intravenous vitamin C could be a promising treatment option for those suffering from acute viral infections and associated knee pain.

While this study is intriguing and highlights a potential treatment avenue, further research is needed to conclusively establish the effects of vitamin C on knee pain, specifically in the context of viral infections.
Read More
We observed a case involving a man in his 60s with a history of head and neck cancer who presented with unexplained pain in his left knee and bruising in both his upper and lower limbs, symptoms that had been ongoing for about three weeks. Further tests revealed that his blood showed signs of normocytic anemia and slightly abnormal clotting, yet no major inflammatory issues were found.

Upon examination of his knee, we found blood in the joint, known as haemarthrosis, and a crucial lab test indicated that he had an undetectable level of vitamin C in his blood. This led to a diagnosis of scurvy, a condition caused by severe vitamin C deficiency, which we identified as the underlying reason for his joint bleeding.

After starting vitamin C supplementation along with dietary changes and managing his pain with acetaminophen, the patient's vitamin C levels returned to normal. Excitingly, his knee pain and swelling improved significantly. This case sheds light on scurvy as a rare but important cause of knee pain and discomfort, especially in patients at risk, showing that effective treatment is available.
Read More
We designed a prospective randomized study to explore how vitamin C may prevent complex regional pain syndrome (CRPS) in patients recovering from total knee arthroplasty (TKA). This condition often manifests after surgery, causing persistent pain that can severely affect recovery. To evaluate vitamin C's effectiveness, we compared one group of patients receiving vitamin C to another group that did not.

During the research, we included a total of 292 patients, with 153 in the vitamin C group and 139 in the control group. We tracked the incidence of CRPS, applying both the Budapest criteria and bone scintigraphy to make accurate diagnoses.

Our findings revealed a significant difference: only 3.9% of patients in the vitamin C group developed CRPS, compared to 12.2% in the control group. This led us to conclude that taking 1 gram of vitamin C daily for 40 days following TKA can effectively reduce the risk of developing CRPS.

In simple terms, it appears that vitamin C can serve as a valuable preventive measure against chronic pain after knee surgery, providing hope for those aiming to recover smoothly.
Read More
We observed an intriguing case involving a 4.5-year-old boy who developed significant knee pain due to a rare nutritional deficiency, scurvy. This condition stemmed from his exclusive intake of meat over the past two years, resulting in skeletal issues and inflammation in multiple joints, including his knees.

Upon examination, the child exhibited several symptoms, including pain, swelling, and an inability to walk. Standard blood tests primarily indicated anemia, but X-rays revealed alarming conditions related to scurvy, such as delayed bone age and severe osteopenia. This alarming picture led us to the conclusion that vitamin C deficiency was the underlying culprit behind his knee pain and skeletal issues.

After initiating vitamin C therapy, we noted a remarkable reduction in pain and swelling over the next two months. The child’s condition improved significantly, allowing him to walk again, and follow-up X-rays confirmed the positive changes in his bone health. This case clearly illustrates how vitamin C can effectively alleviate knee pain related to scurvy and reinforces the importance of proper nutrition for overall skeletal health.
Read More

User Reviews

USERS' SCORE
Good
Based on 6 Reviews
8.1
  • All Reviews
  • Positive Reviews
  • Negative Reviews
7.5
Reduces inflammation
2 people found this helpful
I feel very well taking this product. It reduces my pains and overall inflammation, along with decreasing headaches. It's easy to swallow and I carry a smaller bottle as a travel size in my purse. At the first sign of sickness, I take it until I feel better, sometimes in a larger dose. I'm taking it on a daily basis, 1-2 grams. I love the rose hip addition; it works great and doesn't irritate my stomach, even when taken on an empty stomach. :)
Read More
9
Pain relief effectiveness
1 people found this helpful
Whenever I or a family member feels a faint pain in the throat, which typically means a cold is coming, we take a Now C-500 pill with rose hips, and within a few hours the pain is gone. Now, not only my home but also my parents' and my sister's family are purchasing the same bottle. We will continue this routine.
Read More
9
Joint pain relief
I began taking vitamin C tablets after learning about their benefits in reducing inflammation. After a few weeks, I've noticed a significant decrease in my joint pain. I would definitely recommend these tablets to anyone looking for ways to alleviate inflammation.
Read More
6
Supports energy levels
1 people found this helpful
I generally prefer the C1000 but occasionally take the 500mg dose. This supplement includes rose hips, a natural anti-inflammatory. It helps my mum with her general aches and pains, and I notice a lack of energy when I skip vitamin C for a few days. I definitely recommend it. Now Foods has been recognised as one of the top supplement brands of 2021 for their transparent testing and quality.
Read More
7.5
Benefits collagen absorption
I'm ordering this supplement for the fourth or fifth time; I take it during both winter and summer. I experience issues with my knees, and adding vitamin C while taking collagen supplements greatly benefits the collagen absorption.
Read More

Frequently Asked Questions

9
Joint pain relief
I began taking vitamin C tablets after learning about their benefits in reducing inflammation. After a few weeks, I've noticed a significant decrease in my joint pain. I would definitely recommend these tablets to anyone looking for ways to alleviate inflammation.
6
Supports energy levels
1 people found this helpful
I generally prefer the C1000 but occasionally take the 500mg dose. This supplement includes rose hips, a natural anti-inflammatory. It helps my mum with her general aches and pains, and I notice a lack of energy when I skip vitamin C for a few days. I definitely recommend it. Now Foods has been recognised as one of the top supplement brands of 2021 for their transparent testing and quality.
7.5
Benefits collagen absorption
I'm ordering this supplement for the fourth or fifth time; I take it during both winter and summer. I experience issues with my knees, and adding vitamin C while taking collagen supplements greatly benefits the collagen absorption.
9
Pain relief effectiveness
1 people found this helpful
Whenever I or a family member feels a faint pain in the throat, which typically means a cold is coming, we take a Now C-500 pill with rose hips, and within a few hours the pain is gone. Now, not only my home but also my parents' and my sister's family are purchasing the same bottle. We will continue this routine.
6
Helps with osteoarthritis
Decent quality vitamin C, and I appreciate that it's combined with rose hips as they help with osteoarthritis. Taking this rose hip extract right before a C-section reduces pain and the need for pain medications afterwards.
7.5
Reduces inflammation
2 people found this helpful
I feel very well taking this product. It reduces my pains and overall inflammation, along with decreasing headaches. It's easy to swallow and I carry a smaller bottle as a travel size in my purse. At the first sign of sickness, I take it until I feel better, sometimes in a larger dose. I'm taking it on a daily basis, 1-2 grams. I love the rose hip addition; it works great and doesn't irritate my stomach, even when taken on an empty stomach. :)
8
Evaluated Vitamin C's knee pain effects
We explored how Vitamin C might affect knee pain in patients suffering from osteoarthritis. The study involved 60 participants who were experiencing clinical and radiological signs of knee osteoarthritis. Over three months, they took Cartinorm, a supplement that included glucosamine sulfate, chondroitin sulfate, forti gel, and Vitamin C, all aimed at improving their symptoms.

While we noticed improvements in movement, reduced pain, and enhanced daily living activities among the patients, it is important to note that we cannot specifically attribute these benefits to Vitamin C alone. It was included in a treatment that involved multiple components, which means isolating its effect on knee pain isn’t feasible with the current data.

Overall, while the treatment showed positive results, the specific impact of Vitamin C on knee pain remains inconclusive. Thus, further studies are necessary to understand its effectiveness in this context.
5
Vitamin C's potential in knee recovery
We conducted a study to see how vitamin C, combined with hydrolyzed collagen, could help athletes dealing with knee pain, specifically those suffering from patellar tendinopathy, often known as jumper's knee. Our research involved a double-blind, randomized controlled trial, meaning neither the participants nor the researchers knew who was receiving the real treatment or a placebo. This setup helps ensure that our findings are as accurate as possible.

Over the course of 24 weeks,76 athletes participated in a program that included tendon loading exercises. Those in the intervention group received daily doses of 10 grams of hydrolyzed collagen and 40 milligrams of vitamin C, while the control group took a placebo. We measured their knee pain and overall function using the VISA-P score, a tool designed to assess pain and sports participation effectiveness.

With our detailed approach, we aimed to evaluate whether the combination of vitamin C and collagen showed any significant improvement in knee pain compared to just the exercise program alone. While we continue to analyze our data and await conclusive results, the overall study is pioneering in assessing this unique combination for recovery in athletes experiencing knee pain.
We designed a prospective randomized study to explore how vitamin C may prevent complex regional pain syndrome (CRPS) in patients recovering from total knee arthroplasty (TKA). This condition often manifests after surgery, causing persistent pain that can severely affect recovery. To evaluate vitamin C's effectiveness, we compared one group of patients receiving vitamin C to another group that did not.

During the research, we included a total of 292 patients, with 153 in the vitamin C group and 139 in the control group. We tracked the incidence of CRPS, applying both the Budapest criteria and bone scintigraphy to make accurate diagnoses.

Our findings revealed a significant difference: only 3.9% of patients in the vitamin C group developed CRPS, compared to 12.2% in the control group. This led us to conclude that taking 1 gram of vitamin C daily for 40 days following TKA can effectively reduce the risk of developing CRPS.

In simple terms, it appears that vitamin C can serve as a valuable preventive measure against chronic pain after knee surgery, providing hope for those aiming to recover smoothly.
8
Vitamin C reduces post-surgery inflammation
We conducted a study to uncover how vitamin C can aid in managing inflammation following total knee replacement surgery. In our research involving 110 patients, we formed two groups: one group received a significant dose of 15 g of parenteral vitamin C right after their surgery, while the other group did not receive any vitamin C.

After the treatment, we observed that those who received vitamin C showed notable decreases in inflammatory markers, specifically C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR), which are key indicators of inflammation. This decrease points to a more effective control of inflammation, leading to faster recovery and improved healing for patients.

Moreover, vitamin C appeared to help reduce the need for opioid painkillers and brought only mild side effects, making it an appealing option for enhancing postoperative care.
We observed a case involving a man in his 60s with a history of head and neck cancer who presented with unexplained pain in his left knee and bruising in both his upper and lower limbs, symptoms that had been ongoing for about three weeks. Further tests revealed that his blood showed signs of normocytic anemia and slightly abnormal clotting, yet no major inflammatory issues were found.

Upon examination of his knee, we found blood in the joint, known as haemarthrosis, and a crucial lab test indicated that he had an undetectable level of vitamin C in his blood. This led to a diagnosis of scurvy, a condition caused by severe vitamin C deficiency, which we identified as the underlying reason for his joint bleeding.

After starting vitamin C supplementation along with dietary changes and managing his pain with acetaminophen, the patient's vitamin C levels returned to normal. Excitingly, his knee pain and swelling improved significantly. This case sheds light on scurvy as a rare but important cause of knee pain and discomfort, especially in patients at risk, showing that effective treatment is available.
We observed an intriguing case involving a 4.5-year-old boy who developed significant knee pain due to a rare nutritional deficiency, scurvy. This condition stemmed from his exclusive intake of meat over the past two years, resulting in skeletal issues and inflammation in multiple joints, including his knees.

Upon examination, the child exhibited several symptoms, including pain, swelling, and an inability to walk. Standard blood tests primarily indicated anemia, but X-rays revealed alarming conditions related to scurvy, such as delayed bone age and severe osteopenia. This alarming picture led us to the conclusion that vitamin C deficiency was the underlying culprit behind his knee pain and skeletal issues.

After initiating vitamin C therapy, we noted a remarkable reduction in pain and swelling over the next two months. The child’s condition improved significantly, allowing him to walk again, and follow-up X-rays confirmed the positive changes in his bone health. This case clearly illustrates how vitamin C can effectively alleviate knee pain related to scurvy and reinforces the importance of proper nutrition for overall skeletal health.

References

  1. Hosseini-Monfared P, Mirahmadi A, Sarzaeem MM, Pourshahryari S, Aminnia P, et al. Ascorbic Acid Reduces the Blood Boss After Total Knee Arthroplasty: Insights From a Randomized Controlled Trial. Arthroplast Today. 2025;32:101618. 10.1016/j.artd.2025.101618
  2. Muftic M, Trifunovic S, Galijasevic K. Evaluation of the Cartinorm Use in the Therapy of Patients with Knee Osteoarthritis. Mater Sociomed. 2024;36:54. 10.5455/msm.2024.36.54-58
  3. van Dam L, Terink R, Mensink M, de Vos RJ, Zwerver J. The JUMPFOOD study: additional effect of hydrolyzed collagen and vitamin C to exercise treatment for patellar tendinopathy (jumper's knee) in athletes-study protocol for a double-blind randomized controlled trial. Trials. 2023;24:768. 10.1186/s13063-023-07783-2
  4. Ramón R, Holguín E, Chiriboga JD, Rubio N, Ballesteros C, et al. Anti-Inflammatory Effect of Vitamin C during the Postoperative Period in Patients Subjected to Total Knee Arthroplasty: A Randomized Controlled Trial. J Pers Med. 2023;13. 10.3390/jpm13091299
  5. Marquardt P, Raman G, Shen YM, Wang DH. Scurvy: a rare cause of haemarthrosis. BMJ Case Rep. 2022;15. 10.1136/bcr-2021-244594
  6. Jacques H, Jérôme V, Antoine C, Lucile S, Valérie D, et al. Prospective randomized study of the vitamin C effect on pain and complex pain regional syndrome after total knee arthroplasty. Int Orthop. 2021;45:1155. 10.1007/s00264-020-04936-9
  7. Kyprios A. Vitamin C Deficiency Presenting as an Acute Limp in Childhood. Cureus. 2020;12:e9182. 10.7759/cureus.9182
  8. Ripani U, Manzarbeitia-Arroba P, Guijarro-Leo S, Urrutia-Graña J, De Masi-De Luca A. Vitamin C May Help to Reduce the Knee's Arthritic Symptoms. Outcomes Assessment of Nutriceutical Therapy. Med Arch. 2019;73:173. 10.5455/medarh.2019.73.173-177
  9. López-Vidriero E, Olivé-Vilas R, López-Capapé D, Varela-Sende L, López-Vidriero R, et al. Efficacy and Tolerability of Progen, a Nutritional Supplement Based on Innovative Plasma Proteins, in ACL Reconstruction: A Multicenter Randomized Controlled Trial. Orthop J Sports Med. 2019;7:2325967119827237. 10.1177/2325967119827237
  10. Gonzalez MJ, Miranda-Massari JR, Berdiel MJ, Duconge J, Rodríguez-López JL, et al. High Dose Intraveneous Vitamin C and Chikungunya Fever: A Case Report. J Orthomol Med. 2014;29:154.
  11. Noordin S, Baloch N, Salat MS, Rashid Memon A, Ahmad T. Skeletal manifestations of scurvy: a case report from dubai. Case Rep Orthop. 2012;2012:624628. 10.1155/2012/624628
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