Will this stop me getting sick?

No — we make no such promise. In the general population, vitamin C intake has no effect on how often people catch colds. 2 The methods with the highest level of evidence for infection protection are vaccination, hand hygiene, adequate sleep and stopping smoking.

I already feel sick — can I come in?

If you have a fever or signs of an active infection, no — we recommend seeing a physician first. High-dose vitamin C started after symptoms begin has shown no consistent effect on duration or severity. 2 And because immunocompromised clients may be at the clinic, we do not accept people with active infections. Once you've recovered, you are welcome to come in for recovery support.

Why is the vitamin D injection given separately?

Vitamin D is fat-soluble, and an intramuscular injection is an effective way to correct a deficiency quickly. If you are deficient, that is meaningful. But for protection against infections, the evidence supports regular daily intake rather than a one-off high dose. 1 That is why we recommend daily maintenance after the injection.

Will I benefit even without a deficiency?

There is no strong data that these components reduce infection risk in people who are not deficient. 1 , 2 The situation where this treatment is most meaningful is correcting an identified deficiency.

I run marathons / train intensively — will it help?

This is one of the groups where the evidence is most positive. In people under short-term intense physical stress, vitamin C halved the risk of catching a cold. 2 That finding comes from marathon runners, skiers and soldiers in cold regions.

How often can I have it?

We do not propose a fixed course program. Frequency is decided at the assessment, based on your needs and any deficiency.

How is it different from taking a vitamin pill?

Given intravenously, the digestive step is skipped and blood levels rise quickly. But this has not been shown to create a measurable advantage for immunity. For daily support, oral intake is enough for most people — and for vitamin D in particular, regular daily intake is the preferred route. 1

A mild sting is felt as the IV line is placed. The intramuscular vitamin D injection can leave local tenderness for a few days. Related pages: Cold & Flu Support IV Therapy · High-Dose Vitamin C IV Therapy

Immune Booster IV Therapy Istanbul

Q: Does it replace the flu vaccine?

No, absolutely not. Vaccination is the method with the highest level of evidence against seasonal infections, and this treatment is not an alternative to it.

What is Immune Booster IV therapy?

It is the intravenous administration of vitamins and minerals involved in the normal working of the immune system. It is not a treatment shown to prevent illness; its purpose is replacement in people with deficiencies, and general support. Sessions at IV Point take 30–45 minutes and follow a physician assessment.

Can Immunity Be “Boosted”?

We need to start with this term, because it is the most used and least questioned phrase in the industry.

A healthy immune system is not “strong” — it is balanced. Its job is to respond when there is a threat and to switch the response off when the threat has passed. An overactive immune system is not something to wish for — autoimmune diseases and excessive inflammatory responses are exactly that.

So our aim is not to “boost” immunity but to replace what is missing and support normal function. The distinction may look small, but it is the key to the rest of this page.

What Do the Components Actually Do?

We spell out what the evidence says for each component separately, because they are not all at the same level.

Vitamin D — the strongest evidence in the protocol

This is the best-supported component, and it comes with an important condition.

A meta-analysis of individual participant data from twenty-five randomized trials showed that vitamin D supplementation protects against acute respiratory tract infections.¹ But the details matter:

The protective effect was seen with daily or weekly intake — not with single high-dose (bolus) administration.
The effect is much more pronounced in people starting with severe vitamin D deficiency. In that group, the number needed to treat to prevent one infection was 4; in the general population it was 33.

What this means in practice: if you are deficient in vitamin D, replacing it is meaningful, and an intramuscular injection is an effective way to close the gap quickly. For protection against infections, though, what matters is regular daily maintenance, not a one-off injection. That is why we recommend daily maintenance after the intramuscular dose.

There is no strong data that giving vitamin D to someone who is not deficient reduces infection risk.

Vitamin C — a nuanced picture

The most comprehensive review of vitamin C reports three separate findings:²

In the general population, it does not prevent colds. In an analysis of twenty-nine comparisons and 11,306 participants, regular vitamin C had no effect on how often people caught colds.

But there is one striking exception. In people under short-term intense physical stress — marathon runners, skiers, soldiers stationed in cold regions — vitamin C halved the risk of catching a cold. Five studies, 598 participants.

High-dose vitamin C started after symptoms begin showed no consistent effect on duration or severity.

One more notable detail: the doses used in the physical-stress group were modest — 0.25–1 gram per day. The review notes that similar and higher doses did not affect frequency in the community. “Higher dose is better” does not hold here.

Zinc, B vitamins and folic acid

These components act as cofactors in the normal function of immune cells, in cell division and in energy metabolism. Their deficiencies impair immune function.

The logic is the same: replacing what is missing is meaningful; loading what is not missing has not shown benefit.

What Actually Protects You From Infections?

Let’s say it up front: the real determinants of infection protection are these.

1. Vaccination. Starting with the flu vaccine — the method with the highest level of evidence against seasonal infections.

2. Hand hygiene. The best evidence for avoiding colds belongs to physical measures.

3. Sleep. Insufficient sleep is one of the strongest modifiable factors increasing susceptibility to infections.

4. Stopping smoking. Directly reduces susceptibility to respiratory infections.

These are the foundation of protection, and no supportive treatment replaces them. Our place is in a different question: is something missing — and if so, replacing it.

About the Formula

Contents and doses are set individually after the pre-treatment assessment. The protocol includes:

Vitamin C: involved in the normal function of immune cells
B-vitamin complex: a cofactor in energy metabolism and cell renewal
Zinc: for its role in immune-cell function and cell division
Folic acid: for its role in cell division and DNA synthesis
Vitamin D (intramuscular): given into the muscle, in addition to the IV protocol, to correct deficiency

Why aren’t doses listed here?

Doses are set individually; we do not publish a standard dosing chart on the website. The contents and doses to be used are explained to you in detail before the session.

Potential Benefits

Support for nutrients involved in immune function
Replacement in people with deficiencies — especially vitamin D and zinc
Fluid and mineral support — during intense periods
A contribution to energy metabolism — through B vitamins

Effects vary from person to person. This treatment does not prevent illness, does not treat infections, makes no promise of reducing sick days, and is not a substitute for vaccination.

Who Might Consider This Supportive Treatment?

People with an identified vitamin D or zinc deficiency — for replacement
Adults whose eating pattern has been temporarily disrupted
People in periods of intense physical exertion — marathon preparation, heavy training camps
People looking for general support during intense work and travel periods

Note: if you get frequent infections, the underlying causes need investigating. Recurrent infections can be a sign of uncontrolled diabetes, an immune-system condition or another health problem.

What Should You Do If You Feel Sick?

This section matters.

If you have a fever or signs of an active infection, we do not administer the treatment. For two reasons:

First, for you. Fever, cough and sore throat are assessed with an examination, not an infusion. It may be a simple viral infection — but it may also be pneumonia, a urinary tract infection, sinusitis or something else. These need telling apart. And high-dose vitamin C started after symptoms begin has shown no consistent effect on duration or severity.²

Second, for our other clients. Other people are receiving infusions at the clinic at the same time, and some of them may be immunocompromised. Someone with an active infection should not enter that environment.

What to do: see a physician first. Once you have recovered, if you’d like to come in for recovery support, our door is open.

Who Is It Not Suitable For?

Fever or signs of active infection — physician assessment comes first
Pregnancy and breastfeeding
Kidney failure
Heart failure and serious heart disease — because of the risk of fluid overload
Conditions affecting vitamin D metabolism, such as hypercalcemia or sarcoidosis — assessed before any vitamin D administration
A history of calcium oxalate kidney stones — if high-dose vitamin C is planned
Iron-overload diseases (hemochromatosis, thalassemia) — vitamin C increases iron absorption
Bleeding disorders or anticoagulant use — assessed with regard to the intramuscular injection
Known allergy to any component

Tell us about every medication and supplement you use. If you already take a vitamin D supplement, be sure to say so.

Possible Side Effects

Temporary redness, tenderness or bruising at the IV site
Temporary pain and tenderness at the intramuscular injection site
Nausea or dizziness with a fast infusion
Temporary nausea or a metallic taste from zinc
Allergic reaction to a component (rare)

Equipment to respond to a possible allergic reaction is kept ready, and the treatment is carried out under the supervision of an anesthesiology specialist.

Before, During and After

Before: no need to fast. Tell us about your medications, supplements and chronic conditions. If you have recent blood tests (vitamin D, blood count, ferritin), bring them.

During: 30–45 minutes. You can rest seated, work or listen to music.

After: no particular restrictions. If an intramuscular injection was given, the site may be tender for a few days.

When Should You See a Doctor Instead?

Fever, cough, sore throat, shortness of breath — signs of active infection
Frequently recurring infections — more infections per year than expected
Wounds that don’t heal or recur, mouth ulcers
Unexplained weight loss, night sweats, prolonged fever
Ongoing fatigue — B12, iron or vitamin D deficiency and thyroid dysfunction should be investigated

None of these situations is addressed with an infusion.

References

Martineau AR, Jolliffe DA, Hooper RL, et al. Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data. BMJ. 2017;356:i6583. pubmed.ncbi.nlm.nih.gov/28202713
Hemilä H, Chalker E. Vitamin C for preventing and treating the common cold. Cochrane Database of Systematic Reviews. 2013;(1):CD000980. pubmed.ncbi.nlm.nih.gov/23440782

Written and medically reviewed by: Ömer Fatih Şahin, MD Specialist in Anesthesiology & Reanimation — Last updated: 27.08.2026

The content on this page is for informational purposes only and is not a substitute for medical treatment. The treatment is administered to individuals found suitable at a pre-treatment assessment. If you have a fever or signs of infection, please see a physician.

Immune Booster IV Therapy: What You Should Know About Immune Support