6 Min
Zuletzt aktualisiert am 29.04.2026
It seems the vitamins have decided to go through every letter of the alphabet – so it can only be a matter of time before Vitamin Z hits the market. It's easy to get dizzy and wonder: What do I really need? Today, we're not going to talk about the entire vitamin alphabet, but just one letter: C. More specifically: Vitamin C infusions. What is it? What does it do? How important is Vitamin C? What happens if you're deficient? What are the best sources – and is a Vitamin C infusion one of them? Fascinating questions, and we'll answer them all! Stay tuned until the end, and we'll also give you an overview of how much this will cost if you decide to try it.
Speaking of dizziness & Headaches: These aren't just side effects of a long list of vitamins, but could also be a sign of a vitamin C deficiency! However, the most accurate way to determine which vitamin you're actually lacking is through a blood test. Let's move on to the effects and side effects of vitamin C.
Vitamin C infusions can help: effects and side effects
Just a quick note about the term itself: A vitamin C infusion is a method of delivering high doses of vitamin C directly into the bloodstream. Unlike ingestion through food or supplements, the vitamin enters the body without having to go through the digestive tract. It is often used for exhaustion, a weakened immune system, or inflammatory diseases. It is also increasingly used in alternative medicine.
Vitamin C itself is involved in numerous important processes in the body. One of its best-known properties is its positive effect on the immune system. Vitamin C infusions help strengthen the body's defenses and protect cells from oxidative stress. It is also essential for the formation of collagen, which is important for skin, joints, and connective tissue. Furthermore, it improves iron absorption from plant-based foods, which is particularly important in vegetarian and vegan diets. You've probably noticed that many other vitamins and supplements are recommended to be taken with vitamin C. This is precisely because it is involved in so many processes in the body and complements the rest of the body's systems. vitamin-Alphabets, so to speak, serve as a crutch.
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Another area of application is cell protection: Vitamin C acts as an antioxidant and neutralizes free radicals, which are caused by stress or environmental toxins, among other things.
But what about an infusion – is it suitable for everyone? And how does it differ from oral administration?
High-dose vitamin C as an infusion – advantages and risks
A major advantage of a high-dose vitamin C infusion is its rapid and effective absorption. While orally administered vitamin C is only partially utilized by the body, an infusion reaches the bloodstream directly. This is because the active ingredient doesn't first have to pass through the digestive tract before reaching where it's needed. The effects of a vitamin C infusion are particularly evident in strengthening the immune system, improving wound healing, and providing support for those with chronic illnesses. Some people also report a noticeable increase in energy and a reduction in inflammation.
However, there are also potential risks.An excessive dose can potentially cause side effects such as
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Nausea,
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Diarrhea,
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Mild gastrointestinal discomfort,
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Headache,
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or cause irritation at the injection site.
Furthermore, dizziness or mild nausea may occur in sensitive individuals. In rare cases, a temporary sensation of heat or skin reddening after the infusion has been reported. Special caution is advised for people with kidney problems or a predisposition to kidney stones, as excessive intake of vitamin C via infusion or other oral forms can increase the risk of oxalate stones. Similarly, a very high dose can lead to an imbalance in mineral levels.
The initial worsening
Another topic is the so-called initial worsening of symptoms after a vitamin C infusion. Some people report a temporary worsening of their symptoms after the first infusion. This may be because the body first needs to get used to the high dose of vitamin C. In most cases, these reactions subside quickly.
However, a high-dose vitamin C infusion should always be discussed with a doctor. Anyone who is unsure or already suffers from chronic illnesses should definitely seek advice beforehand to rule out any potential risks.
fatigue & Co.: Vitamin C deficiency and the need for vitamin C
A vitamin C deficiency can lead to various health problems. Early symptoms often include fatigue, increased susceptibility to infections, and poor wound healing. In the long term, a severe deficiency can even lead to serious illnesses such as scurvy. But what is the actual daily requirement for vitamin C? The German Nutrition Society (DGE) recommends between 95 and 110 mg per day for adults. However, in certain situations – for example, during periods of stress, infections, or while smoking – the requirement can be significantly higher.
Since vitamin C is also important for other processes, a vitamin C deficiency can of course lead to further deficiencies – collagen cannot be formed as well, iron cannot be absorbed as well, etc.
How often should a vitamin C infusion be administered?
How often an infusion should be administered depends on various factors. In cases of acute infections or high stress, a weekly infusion may be beneficial, while for long-term use, monthly intervals may suffice. Generally, it is recommended to consult with your doctor on an individual basis. For example, someone who regularly suffers from exhaustion or a weakened immune system could benefit from a vitamin C infusion to combat fatigue. But shhh: Sometimes we simply need to focus on our sleep hygiene. Good Sleep It shouldn't be underestimated!
An infusion is usually not necessary – even standard oral intake is very beneficial for the body. However, it is more helpful in preventing deficiencies and can compensate for minor deficiencies. If you have a severe deficiency that you want to address directly, a vitamin C infusion could be a sensible option.
The cost of the vitamin C infusion
As promised, we will finally discuss the financial side of the infusion.As you can probably guess, it's more expensive than standard oral preparations. The cost varies depending on the supplier and dosage, but prices generally range between 50 and 150 euros per infusion. Public health insurance companies usually don't cover the costs unless there's a confirmed vitamin C deficiency.
Have you ever opted for a vitamin C infusion? Feel free to share your experience with us – or leave us any questions you may have.
Want to learn more about the rest of the vitamin alphabet? Then check out our article on "All vitamins in one table" over.
