Reaching the age of 40 often comes with noticeable changes in health. Many adults in the Netherlands begin to feel that their energy levels are not as strong as before, recovery from illness takes longer, and their immune system does not respond as quickly.

Research from the National Institute on Aging (2021) shows that this natural decline is part of a process called immunosenescence, where the immune system gradually becomes weaker. This is why adults over 40 are more prone to infections, fatigue, and slower healing.

 To counter these effects, an increasing number of people are turning to infusen, also known as vitamin drips, to strengthen immunity and improve overall vitality.

Infusen Explained: What Are Vitamin Drips and How Do They Work?

The word infusen refers to intravenous (IV) infusions of vitamins, minerals, and antioxidants. Instead of taking pills or capsules that pass through the digestive system, vitamin drips deliver nutrients directly into the bloodstream.

This method ensures nearly 100% absorption, unlike oral supplements that can lose potency during digestion. The European Journal of Clinical Nutrition (2019) found that oral Vitamin C absorption may drop by up to 50% when processed by the gut. IV delivery avoids this problem, making infusen far more effective.

A typical immune-strengthening infusion takes place in a medical setting. A small IV line is placed in the arm, and a custom blend of vitamins is slowly infused over 30–45 minutes. Most people find the process comfortable and relaxing. Because nutrients bypass the digestive tract, many patients feel an energy lift within hours or days.

Why Adults Over 40 Need Extra Immune Support

The immune system naturally weakens with age. White blood cells lose efficiency, inflammation increases, and antibody production slows down. A study published in the Journal of Immunology (2020) confirmed that older adults are more likely to experience respiratory infections and delayed recovery times.

On top of this, lifestyle factors in midlife often make matters worse. Busy careers, family responsibilities, and chronic stress can limit time for rest, balanced meals, or exercise. Even with a healthy diet, key immune-supporting nutrients such as Vitamin D, Zinc, and B vitamins may still be lacking.

This is why many Dutch adults over 40 are turning to vitamine infusen. By directly supplying the body with the nutrients it needs, vitamin drips help strengthen natural defenses and restore resilience against illness.

Benefits of Vitamin Infusen for Adults Over 40

The health advantages of immune-strengthening infusen extend beyond fighting colds. For adults entering their 40s and 50s, they can provide a wide range of improvements:

• Stronger immune defenses: Regular infusions may help the body fight off seasonal viruses more effectively.
• More daily energy: Adults often report higher focus and stamina, making it easier to handle busy workdays.
• Faster recovery: Whether from flu, stress, or surgery, nutrient-rich infusions speed up healing.
• Support against stress and burnout: B vitamins and magnesium help regulate mood and nervous system balance.
• Healthy aging: Antioxidants like glutathione help protect cells from damage, contributing to younger-looking skin and improved overall wellness.

These benefits are especially valuable for professionals with demanding jobs, parents balancing family duties, and active adults who want to stay healthy for longer.

Key Nutrients in Immune-Strengthening Infusen

One of the main advantages of infusen is that they can be tailored to individual needs. For adults over 40, immune-focused drips usually contain:

• Vitamin C: A powerful antioxidant that protects cells and helps the body fight infections. Studies from Harvard Health Publishing (2022) show that high-dose Vitamin C infusions can reduce fatigue and support immune cell activity.
• Vitamin D: Known as the “sunshine vitamin,” it plays a vital role in immunity and bone strength. Low Vitamin D levels are common in northern Europe, especially during the winter months.
• Zinc: Essential for wound healing and immune response. A deficiency can make adults more vulnerable to infections.
• Glutathione: Called the “master antioxidant,” it helps reduce oxidative stress, supports detoxification, and may slow down visible signs of aging.
• B-complex vitamins: Important for energy production and brain health, which often decline with age.

By combining these nutrients in a single infusion, treatments can create a strong formula designed to boost immunity and support daily performance.

Treatment Protocol: How Often to Take Infusen After 40

The frequency of treatments depends on the individual’s lifestyle and health goals. For general immunity, many recommend one infusion every four to six weeks. For adults recovering from illness or facing high stress, a short series of weekly treatments may provide faster results. Athletes or frequent travelers sometimes choose infusen before important events or trips to strengthen their bodies in advance.

Most clinics advise starting with an intake consultation, where a medical professional reviews medical history and discusses the best treatment plan. This ensures the infusion is safe, customized, and effective.

In the Netherlands, many adults now choose infusen as part of their regular health routine to keep immunity strong after 40.

Safety and Side Effects of Infusen

Safety is one of the most common concerns when considering IV vitamin drips. When provided in a professional medical setting, infusen is generally safe for healthy adults. They are administered by trained doctors or nurses who monitor the entire process. Still, as with any intravenous treatment, mild side effects may occur. These include small bruises at the injection site, slight dizziness, or temporary fatigue. Serious reactions are very rare, especially when infusions are tailored to the patient’s health profile.

The Dutch Society for Clinical Nutrition (2021) recommends that such treatments always take place under medical supervision. This ensures the correct dosage of vitamins and avoids complications in patients with underlying conditions such as kidney disease or heart problems. Adults considering infusen should always discuss their medical history with the provider before starting treatment.

Costs of Vitamin Infusen in the Netherlands

The price of immune-strengthening infusen can vary depending on the provider and the ingredients used. On average, Dutch clinics charge between €150 and €250 for a single session. Package deals are usually more cost-effective, with four sessions priced around €600 to €800. Exclusive anti-aging or detox blends can cost up to €1000 or more.

While these treatments are not typically covered by Dutch health insurance, many adults see them as a worthwhile investment in their long-term health and performance. Considering the energy boost, immune protection, and faster recovery they provide, the value often outweighs the cost.

Infusen for Energy and Immunity After 40

Aging does not have to mean fatigue, frequent illness, or slow recovery. With immune-strengthening infusen, adults over 40 in the Netherlands can stay active, resilient, and healthier for longer. By delivering essential vitamins and antioxidants directly into the bloodstream, vitamin drips offer quick, visible results for both immunity and energy.

For those looking to maintain vitality and strengthen their body’s defenses, infusen provides a safe and effective path to healthy aging.