Spring Reset for Your Body: The 5 Most Important Supplements - Buying Guide

Spring is all about new beginnings - yet many people in Germany feel more tired than energized. After dark winter months, vitamin D levels are often depleted. The result: lack of movement, increased stress, and a sluggish immune system.

Analyses by the German Nutrition Society (DGE) show that around one third of adults in Germany have an inadequate vitamin D supply - and that is exactly the foundation you need for a powerful start to spring.

This guide is for health-conscious adults who want to understand - without marketing hype - which supplements can be useful in spring and which nextvital products are a good fit.

Quick Picks: The Best Supplement for Your Goal

Short and to the point if you are in a hurry:

• Sunshine vitamin after winter: next d-complete - vitamin D complex with D3, K2, magnesium & vitamin A (capsules, €39.90)
• Flexible liquid dosing: next D3 + K2 oil - vegan vitamin D3-K2 oil with 800 IU D3 per drop (oil, €33.90)
• More energy & less fatigue: next magnesium - high-dose triple magnesium complex (capsules, €27.90)
• Vegan omega-3 for heart & brain: next omega 3 - algae oil with 150 mg DHA & 75 mg EPA per softgel (capsules, €29.90)
• Targeted immune support: next immune support - immune complex with vitamin C, zinc & plant extracts (capsules, €54.90)
• Gentle spring reset & gut support: next daily greens bio - organic superfood powder with grasses, hemp & fiber (powder, €27.90)

Prices as of March 2026, subject to change.

Why Supplements Make Sense in Spring

In winter, the body produces hardly any vitamin D because of low sun exposure. The German Weather Service emphasizes that sufficient UV-B radiation for vitamin D synthesis is only available again in spring - and by then, stores are usually significantly depleted.

With spring, our activity levels and often our training ambitions rise. The demand for nutrients that support energy, muscles, and the immune system increases. Magnesium is involved in more than 300 enzyme reactions and contributes to energy metabolism, muscle function, and the reduction of tiredness and fatigue.

Supplements can provide targeted support - if quality, dosage, and combinations are right. That is the focus of this guide.

nextvital develops all products in Germany, has every batch lab-tested, and avoids problematic additives. This ensures transparency and safety.

What to Look for When Buying Spring Supplements

The most important criteria at a glance:

• Lab-tested quality: Every batch tested for active ingredient content and contaminants - the standard at nextvital.
• Synergistic nutrients: For example, combining vitamin D with K2 and magnesium - they work together in metabolism.
• Appropriate dosage: Neither token amounts nor megadoses are helpful. Professional societies provide guidance. If unsure, consult a physician or therapist.
• Purity & additives: Products without unnecessary fillers, magnesium stearate, or common allergens are preferable for sensitive individuals. This is a key focus at nextvital.
• Form & day-to-day practicality: Capsules, drops, powder - choose the format that fits your routine.
• Individualization: Take into account blood values, pre-existing conditions, medications, and lifestyle. nextvital offers online initial consultations ("quick check up") and analyses such as hair mineral analysis for better insight.

The 5 Most Important Supplements for Your Spring Boost

1. Vitamin D Complex - Your Post-Winter Foundation

next d-complete provides per capsule 2,400 IU (60 µg) vitamin D3, 80 µg vitamin K2, 75 mg magnesium (as magnesium malate), and vitamin A.

Recommended: Vitamin D complex with D3, K2, magnesium & vitamin A (120 vegan capsules, €39.90).

Why it matters in spring:

• Replenishes depleted vitamin D stores
• Supports bones, muscles, and the immune system

Advantages:

• Comprehensive combination: D3, K2, magnesium, vitamin A
• Vegan capsules without unnecessary additives
• Lab-tested in Germany

Possible drawbacks:

• Higher dosage - if you get a lot of sun or take additional vitamin D, it is sensible to check blood levels
• Capsules are less flexible than drops for very low doses

Best for: Anyone who wants to rebuild their vitamin D foundation after winter.

Alternative liquid option: next D3 + K2 oil: 800 IU vitamin D3 and 20 µg K2 from vegan sources per drop - easy to adjust dosing (€33.90 for 30 ml).

2. Magnesium Complex - For Spring Fatigue & Muscle Stress

Magnesium contributes to energy metabolism, muscle function, nervous system function, and reduction of tiredness and fatigue.

Recommended: next magnesium - high-dose, bioavailable magnesium complex (120 vegan capsules, €27.90).

Each capsule contains 113 mg elemental magnesium from three sources, without magnesium oxide - for high tolerability and good absorption.

Advantages:

• Effective daily amount with just a few capsules
• High-quality magnesium forms, no problematic additives
• Vegan, lab-tested, made in Germany

Drawback:

• Capsule form, so for very low individual doses you may need to split intake

Best for: Anyone who sits a lot, is starting or increasing exercise, or feels run-down and wants to optimize their magnesium status.

3. Omega-3 from Algae - Cell Protection for Heart, Brain & Inflammation Balance

Omega-3 fatty acids (EPA, DHA) are structural components of cell membranes and are important for heart health, brain function, and inflammatory balance. EFSA confirms that a daily intake of 250 mg EPA + DHA supports normal heart function - many people do not reach that through diet alone.

Recommended: next omega 3 - vegan algae oil with 150 mg DHA & 75 mg EPA per softgel (120 capsules, €29.90).

Three capsules provide 675 mg omega-3 fatty acids (450 mg DHA, 225 mg EPA) - sufficient for heart support.

Advantages:

• Pure, vegan algae oil without contaminant load
• High dosage, convenient for everyday use
• Free from unnecessary additives, lab-tested

Drawback:

• Larger softgel capsules, which some people may find difficult to swallow

Best for: Anyone who rarely eats oily fish, follows a plant-based diet, or wants targeted support for heart and brain.

4. Immune Complex - Smart Use of Vitamin C, Zinc & Plant Compounds

Vitamin C and zinc are central to immune function. Studies show clear benefits, but extreme megadoses do not add value and can have mixed effects.

Recommended: next immune support - immune complex with vitamin C, zinc & plant extracts (120 vegan capsules, €54.90).

Five capsules provide 120 mg vitamin C (150% NRV), 15 mg zinc (150% NRV), and plant extracts such as cordyceps, elderberry, Baikal skullcap.

Advantages:

• Smart combination of vitamins and plant compounds
• Zinc as well-tolerated zinc picolinate, without unnecessary additives
• Vegan, lab-tested, made in Germany

Drawbacks:

• Higher price than single-ingredient products
• If you take additional immune products, pay attention to total daily intake

Best for: Anyone who wants to give their immune system targeted support for specific phases, without juggling lots of separate products.

5. Daily Greens - Gentle Spring Support for Gut & Metabolism

Instead of "detox cleanses", a diet rich in fiber is a better choice for liver, gut, and kidneys. A high-quality greens powder can be a useful addition.

Recommended: next daily greens bio - vegan superfood powder (250 g, €27.90).

next daily greens bio combines hemp flour, sprouted buckwheat, maca, tiger nut flour, and a grass juice blend; per 100 g: 31.4 g fiber, 21.3 g protein.

Advantages:

• Organic ingredients, high fiber content - ideal for gut flora and satiety
• Versatile use, for example in breakfast bowls or smoothies
• Provides magnesium, calcium, iron, zinc

Drawbacks:

• Strong grassy and hemp-like taste - you may need to experiment with recipes
• If you have a sensitive gut, introduce slowly and build up

Best for: Anyone who wants to upgrade their diet in spring and naturally support gut health.

Comparison Table: The Most Important Spring Supplements

*As of March 2026, subject to change.

Our Recommendation: How to Start Spring Feeling Your Best

For many health-conscious adults, a focused selection is enough - no need for "everything at once". For example:

1. Foundation: Vitamin D + magnesium
2. Lifestyle add-on: Omega-3 if you rarely eat fish
3. Immune support in phases: next immune support during demanding periods
4. Upgrade your diet: Use next daily greens bio to make smoothies or breakfast more nutrient-dense

If you struggle with ongoing fatigue or digestive issues, services such as nextvital's quick check up or hair mineral analysis can be worthwhile - enabling more effective, personalized recommendations instead of supplementing "just in case".

FAQ: Common Questions About Spring Supplements

Do I still need vitamin D in spring?

Especially at the beginning of spring, this applies to many people. National health surveys show low vitamin D levels after winter that only recover gradually over time. A blood test from your doctor or a reliable home test will give you clarity.

Can I combine several of the recommended products?

In principle, yes, since they focus on different areas (vitamin D, magnesium, omega-3, immune system, greens). Pay attention to:

• Total intake of fat-soluble vitamins when using combination products
• Overlaps in vitamin C and zinc from different supplements

It is better to supplement in a targeted, planned way, ideally in consultation with a healthcare professional.

Are "detox cleanses" a good idea in spring?

Your body naturally detoxifies via liver, kidneys, gut, skin, and lungs. Extreme fasting or juice cleanses are not necessary and can be stressful for the body. Better options include:

• A diet rich in fiber (for example with next daily greens bio)
• Drinking enough fluids
• Regular movement outdoors
• Restful sleep and stress reduction

How quickly will I notice effects from supplements?

That varies from person to person. Many notice tangible changes with magnesium or omega-3 within days to weeks (better recovery, fewer muscle cramps, more energy). Vitamin D works more in the long term, gradually supporting bone health and immune function.

Should I have blood tests done beforehand?

Especially with higher doses (vitamin D, iron, B12), this is recommended. It helps you identify both deficiencies and excess levels. nextvital also offers screening tools to support your individual assessment.

With the right high-quality supplements - plus movement, spring light, and a healthy diet - you can sustainably improve your wellbeing at the start of the season and truly spring into the new season feeling fit.