High-Dose Vitamin C IV Therapy: A Powerful Ally in Cancer Treatment
At iv&co., we’re always staying at the forefront of new developments in IV therapies. Recently, Jenny, our founder, attended the Vitamin Infusion Business Expo (VIBE) 2024 in Boston, where she had the opportunity to hear Dr. Steve Rallis speak about his book, When Oranges Become Apples . His insightful discussion on the potential of high-dose Vitamin C IV therapy inspired us to share this powerful approach with our clients and healthcare providers.
In his book, Dr. Rallis highlights key potential benefits of IV Vitamin C therapy, including:
- The transformation of Vitamin C into a pro-oxidant at high doses, which may help target cancer cells.
- Its potential to enhance chemotherapy and radiation treatments.
- The possibility to reduce toxicity and side effects from traditional cancer therapies.
- A holistic approach to cancer care, integrating IV Vitamin C as part of a comprehensive wellness plan.
Inspired by this emerging area of study, we want to learn more on how high-dose Vitamin C IV therapy could complement conventional cancer treatments and support patients’ overall wellness during their journey.
As cancer treatments continue to advance, many patients are looking for ways to enhance traditional methods like chemotherapy and radiation. One therapy that’s gaining attention is high-dose Vitamin C IV therapy. This approach has shown some promise in making treatments more effective while also improving patients’ overall well-being during their cancer journey.
At iv&co., we’re passionate about offering elective therapies that support the body while promoting long-term health. One of the most exciting options we provide is high-dose intravenous (IV) Vitamin C therapy.
In this post, we’ll explain how Vitamin C IV therapy works, why it’s special, and how it can potentially fit into your personal health plan, with approval from your healthcare providers.

How Vitamin C Works: From Antioxidant to Pro-Oxidant
Vitamin C is widely known for its role as an antioxidant, helping the body fight off harmful free radicals and boosting immune function. But when Vitamin C is given at high doses through an IV, it changes its role. Instead of just protecting cells, it turns into a pro-oxidant that may help target and damage cancer cells.
As Dr. Steve Rallis explains in his book When Oranges Become Apples:
“Vitamin C, when administered intravenously at high doses, changes its character—it becomes a pro-oxidant. This might sound counterintuitive, like a superhero turning villainous or like an orange turning into an apple. Yet, in the context of cancer, it’s precisely this change of character that is the key to vitamin C’s anticancer activity. And this is when the real magic happens.”
What Does This Mean?
At lower doses, Vitamin C acts as an antioxidant, protecting the body. But at high doses, Vitamin C produces hydrogen peroxide in the areas surrounding cancer cells. While healthy cells can neutralize this, cancer cells can’t. This allows Vitamin C to potentially target and destroy cancer cells while leaving healthy cells unharmed. This unique transformation is why high-dose IV Vitamin C shows promise as a supportive option in cancer wellness.
As Dr. Rallis further explains, “In normal dietary doses, Vitamin C behaves as an antioxidant. But when administered intravenously at high doses, it becomes a pro-oxidant. This distinction is key to its anticancer properties.” While many oncologists may advise against antioxidants during treatments like chemotherapy and radiation due to the oxidative nature of these therapies, high-dose IV Vitamin C may align with these treatments’ goals (National Cancer Institute, 2023).
That said, it’s important to note that much of the research is still ongoing, and larger clinical trials are needed to fully understand how high-dose Vitamin C may impact cancer cells. While some early studies are promising, it’s essential to have an open dialogue with your medical team about potential therapies.
Why Use IV for High-Dose Vitamin C?
Taking Vitamin C by mouth doesn’t allow the body to absorb enough to reach the levels needed to create this pro-oxidant effect. IV administration bypasses the digestive system, delivering higher amounts of Vitamin C directly into the bloodstream (Padayatty et al., 2006). This allows the body to potentially reach levels that may help support the body’s wellness during cancer treatment. (Hoffer et al., 2015). However, individual dosing is highly personalized, with protocols ranging from 25 grams to 100 grams, based on a client’s health status and wellness goals. Our intake process ensures that these doses are appropriate based on your health history intake form.

The Benefits of High-Dose Vitamin C IV Therapy in Cancer Care
There is growing research showing that high-dose Vitamin C IV therapy may potentially benefit cancer patients in several ways. While it’s not a cure, it has shown the potential to work alongside traditional treatments like chemotherapy and radiation to improve their effectiveness and reduce some of the side effects. In essence, this therapy can potentially be a partner, but certainly not a replacement.
1. Making Chemotherapy and Radiation More Effective
Research suggests that high-dose Vitamin C can make cancer cells more sensitive to treatments like chemotherapy and radiation. When used alongside these treatments, the pro-oxidant effects of Vitamin C may help weaken cancer cells, making it easier for chemotherapy or radiation to destroy them (Zhao et al., 2021).
- One study found that high-dose Vitamin C combined with chemotherapy improved the treatment’s ability to kill cancer cells (Fritz et al., 2014).
- A clinical trial with pancreatic cancer patients showed that IV Vitamin C, when used with chemotherapy, helped stabilize the disease and reduce some treatment side effects (Hoffer et al., 2015).
This synergy makes high-dose Vitamin C IV therapy a promising addition to a comprehensive wellness plan.
2. Reducing Side Effects of Treatment
Cancer treatments like chemotherapy and radiation often come with tough side effects like fatigue, nausea, and pain. High-dose Vitamin C IV therapy has been shown the potential to help reduce the burden on the body, making these treatments easier to handle.
- Vitamin C may help protect healthy cells from the damage caused by cancer treatments, which can reduce symptoms like fatigue and nausea (Padayatty et al., 2006).
- A study on ovarian cancer patients found that high-dose Vitamin C helped reduce the toxicity of chemotherapy, making the treatment more tolerable for patients (Klimant et al., 2018).
For many, this can mean fewer side effects and a smoother treatment experience.
3. Improving Quality of Life
One of the biggest benefits of high-dose Vitamin C IV therapy is its potential to improve overall quality of life for cancer patients. Cancer treatments can be physically and emotionally draining, causing pain, fatigue, and trouble sleeping. Studies show that Vitamin C may help relieve some of these symptoms.
- Patients who received high-dose Vitamin C reported feeling less fatigued, had better sleep, and felt less pain (Klimant et al., 2018).
- In a study on breast cancer patients, those receiving IV Vitamin C experienced less fatigue during chemotherapy compared to those who didn’t receive the treatment (Fritz et al., 2014).
By relieving these symptoms, Vitamin C IV therapy may help patients feel stronger and more energetic as they go through their treatment.
4. Safe and Well-Tolerated
When administered by professionals, high-dose Vitamin C IV therapy is generally considered safe. Side effects are minimal and can include dry mouth or frequent urination as the body processes the Vitamin C. At iv&co, it is required for each patient to notify us of any of the contraindications of high dose Vitamin C infusions like G6PD deficiency, which can affect how the body handles high doses of Vitamin C (National Cancer Institute, 2023).
Our dosing protocols, ranging from 25 grams to 100 grams, are based on clinical research to ensure both safety and potential effectiveness (Carr & McCall, 2022).
How High-Dose Vitamin C Fits Into Your Wellness Plan
Not a Replacement, But a Partner
It’s important to note that high-dose Vitamin C is not a replacement for treatments like chemotherapy, radiation, or surgery. Instead, it works alongside these treatments to help support your body, potentially making cancer cells more vulnerable to treatment while reducing side effects (Fritz et al., 2014).
At iv&co, we strive to ensure that Vitamin C IV therapy fits into your overall health and wellness plan. We provide a detailed intake process, including a safety form to ensure this therapy is right for you. We require all clients to consult their providers before starting high-dose Vitamin C therapy, and to notify us of any contraindications as every situation is different (National Cancer Institute, 2023).

How High-Dose Vitamin C IV Therapy Works for You: Dosage and Safety Considerations
High-Dose Vitamin C Dosage Information
At iv&co, we personalize high-dose Vitamin C IV therapy to meet the needs of each individual. Dosing protocols typically range from 25 grams to 100 grams of Vitamin C, which are administered based on factors such as the client’s overall health, wellness goals, and medical history. The appropriate dose is elective and determined by you and your provider to ensure safety and effectiveness.
Our goal is to deliver the optimal dosage that provides potential benefits while minimizing risks, which is why a thorough an honest intake and a consultation process with your provider is essential before beginning therapy.
Safety Precautions: G6PD Deficiency and Beyond
Safety is always a top priority at iv&co. Before undergoing high-dose Vitamin C IV therapy, we require all clients to complete a detailed intake form and undergo screening for potential contraindications. One critical aspect of this process is testing for G6PD deficiency, a genetic condition that can affect how the body processes high levels of Vitamin C. Individuals with G6PD deficiency may experience complications, such as hemolysis (red blood cell breakdown), if exposed to high doses of Vitamin C. This is why we carefully screen for this condition and ensure that each client is a suitable candidate for the therapy.
Additionally, we ask that all clients provide full disclosure of their medical history, including any medications, supplements, or ongoing treatments, and to avoid adverse reactions. We prioritize your transparency with you and your provider, and work with each client to tailor their IV therapy safely and effectively.
Potential Interactions with Other Treatments
It’s important to recognize that high-dose Vitamin C IV therapy may interact with certain medications or treatments. For example, because Vitamin C is an antioxidant at lower doses, it might affect therapies like chemotherapy and radiation, which rely on oxidative processes to target cancer cells. While high-dose Vitamin C transforms into a pro-oxidant in the body, clients undergoing cancer treatments should always consult their oncologist and providers to discuss whether IV Vitamin C therapy is suitable as part of their comprehensive care plan.
Other potential interactions include medications such as anticoagulants (blood thinners) and certain chemotherapy agents, where high doses of Vitamin C could influence the effectiveness or safety of the primary treatment. For these reasons, it is critical to have your physician involved in any decisions surrounding the integration of IV therapies into your elective health and wellness plan.
Ongoing Research and Future Clinical Trials
The use of high-dose Vitamin C IV therapy is an active area of study, with ongoing clinical trials exploring its potential benefits in cancer care and other health conditions. Researchers are investigating how Vitamin C IV therapy may enhance the effectiveness of conventional cancer treatments, reduce side effects, and improve overall quality of life for patients. While early studies are promising, more large-scale, randomized clinical trials are needed to fully understand the long-term effects and therapeutic potential of this therapy.
At iv&co, we stay informed about the latest research developments to ensure that our services align with current scientific findings. We encourage clients to explore this evolving field of study and to discuss ongoing clinical trials with their healthcare providers if they are interested in participating in cutting-edge therapies.
Want to Learn More About High-Dose Vitamin C IV Therapy?
At iv&co, we’re here to provide elective therapies to support health and wellness. If you’re interested in learning more about how high-dose Vitamin C IV therapy could fit into your treatment plan and if approved by your doctor, we’d love to help.
Talk to Your Doctors
The first step is to speak with your doctor(s) to discuss how high-dose Vitamin C might work with your current health and wellness journey. Every case is unique, and we want to ensure clients work with their providers.
Contact Us
After you’ve spoken with your doctor, reach out to our team at iv&co. Our team is here to support you.
- Call us at: 605-271-0715
- Email us at: julia.hopes@ivclub.com
Your Questions Answered:
Is high-dose Vitamin C IV therapy a replacement for chemotherapy or radiation?
No, high-dose Vitamin C IV therapy is not a replacement for conventional cancer treatments. It is an elective therapy that may complement your existing treatment plan by helping to reduce side effects and potentially enhancing the effectiveness of chemotherapy and radiation.
Is high-dose Vitamin C therapy safe for everyone?
Not all individuals are suitable candidates for this therapy. At iv&co, we carefully screen each client for contraindications, including G6PD deficiency and other health conditions, to ensure safety. It is essential to consult your physician before starting an elective therapy.
Can I receive high-dose Vitamin C while undergoing chemotherapy or radiation?
This depends on your specific treatment plan. We strongly recommend discussing IV Vitamin C therapy with your oncologist to determine whether it aligns with your current treatments.
How will I know what dosage is right for me?
Your dosage will be personalized based on your health status, wellness goals, and existing treatments. Our team will work with you to determine the most appropriate dose for your unique situation.
How long does each high-dose Vitamin C IV therapy session take?
Typically, high-dose Vitamin C IV sessions last between 60 to 90 minutes, depending on the dosage and the individual’s unique treatment plan. Our team will discuss session length during your initial consultation.
Are there any side effects from high-dose Vitamin C IV therapy?
While side effects are generally minimal, some patients may experience mild reactions such as dry mouth, increased urination, or temporary fatigue. More serious side effects are rare, but we carefully monitor each client during this elective therapy. Any potential risks will be discussed during your intake process.
How many sessions will I need?
The number of sessions varies from client to client. It depends on your wellness goals, current health status, and other ongoing treatments. Some patients may undergo weekly treatments, while others may receive them less frequently. We work closely with you to create a tailored plan.
Can I receive high-dose Vitamin C IV therapy if I’m not undergoing cancer treatment?
Yes, high-dose Vitamin C IV therapy is not exclusively for cancer patients. Some individuals opt for this elective therapy to support immune health, boost antioxidant levels, or address other wellness goals. However, it is essential to consult your healthcare provider before beginning any new elective therapy.
What should I do before my first session?
Prior to your session, we will provide a detailed intake form to assess your health history and check for any contraindications, such as G6PD deficiency. We also strongly encourage you to consult with your doctor to ensure this elective therapy is appropriate for you.
Disclaimer
The information provided in this blog post is for informational and educational purposes only and should not be considered medical advice, diagnosis, or treatment. The therapies and services offered by iv&co, including high-dose Vitamin C IV therapy, are elective and have not been evaluated or approved by the U.S. Food and Drug Administration (FDA) for the prevention, treatment, or cure of any medical condition or disease, including cancer.
The content of this blog is not intended to substitute for professional medical advice, diagnosis, or treatment. We strongly recommend that all readers and clients consult with a licensed healthcare provider before making decisions about any elective medical treatment or wellness therapy, including IV therapies.
It is essential that any medical therapy, including high-dose Vitamin C IV therapy, is discussed and approved by your physician or oncologist, especially if you are undergoing treatments such as chemotherapy, radiation, or taking prescription medications, as interactions may occur.
iv&co does not claim to work in conjunction with or under the guidance of your healthcare provider or oncologist. The use of elective therapies is at the discretion of the client, and clients are solely responsible for informing their healthcare provider and disclosing any contraindications or pre-existing conditions prior to receiving treatment.
Results from high-dose Vitamin C IV therapy, or any other therapies provided by iv&co, may vary between individuals. No guarantees, promises, or assurances can be made regarding the outcome or effectiveness of the services offered.
Please note that iv&co encourages all clients to provide full disclosure of their medical history, including any medications, supplements, or treatments they are currently undergoing, to ensure the safe and informed administration of any elective IV therapies.
References
- Carr, A. C., & McCall, C. (2022). Intravenous Vitamin C for Cancer Therapy – Identifying the Current Gaps in Our Knowledge. Frontiers in Physiology, 13, 866713. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231292/
- Rallis, S. (2023). When Oranges Become Apples: An Oncologist’s Journey with Intravenous Vitamin C. Amazon Digital Services LLC. https://www.amazon.com/When-Oranges-Become-Apples-Oncologist/dp/B0DFKRRYV3
- Fritz, H., Flower, G., Weeks, L., Cooley, K., Callachan, M., McGowan, J., Skidmore, B., Kirchner, L., & Seely, D. (2014). Intravenous Vitamin C and Cancer: A Systematic Review. Integrative Cancer Therapies, 13(4), 280-300. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4199254/
- Hoffer, L. J., Robitaille, L., Zakarian, R., Melnychuk, D., Kavan, P., Agulnik, J., Cohen, V., Small, D., & Miller, W. H. Jr. (2015). High-dose intravenous vitamin C combined with cytotoxic chemotherapy in patients with advanced cancer: A phase I-II clinical trial. PLoS One, 10(4), e0120228. https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0120228
- Klimant, E., Wright, H., Rubin, D., Seely, D., & Markman, M. (2018). Intravenous vitamin C in the supportive care of cancer patients: A review and rational approach. Current Oncology, 25(2), 139-148. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7996511/
- National Cancer Institute. (2023). Intravenous Vitamin C (PDQ®)–Patient Version. https://www.cancer.gov/about-cancer/treatment/cam/patient/vitamin-c-pdq
- Padayatty, S. J., Riordan, H. D., Hewitt, S. M., Katz, A., Hoffer, L. J., & Levine, M. (2006). Intravenously administered vitamin C as cancer therapy: Three cases. Canadian Medical Association Journal, 174(7), 937-942. https://www.cmaj.ca/content/174/7/937
- Zhao, H., Zhu, H., Huang, J., Zhu, Y., Hong, M., Zhu, H., Zhang, J., Li, S., Yang, L., Lian, Y., Wang, S., Mao, X., & Chen, Q. (2021). The synergy of Vitamin C with decitabine activates TET2 in leukemic cells and significantly improves overall survival in elderly patients with acute myeloid leukemia. Journal of Experimental & Clinical Cancer Research, 40(1), 268. https://jeccr.biomedcentral.com/articles/10.1186/s13046-021-02134-y

Author: Taylor Burt
Creative Director, iv&co, PLLC
About Taylor
Since joining iv&co in 2022, Taylor has embraced her passion for educating clients on the transformative power of IV therapy & Epigenetics. Wearing many hats—from graphic design to web development and leading R&D projects—she’s always finding new ways to share her excitement for wellness with the community.







