In the Scheunengut guide, we explain vitamins, minerals, plant compounds and dietary supplements clearly and with a solid scientific grounding – from correct intake to the right product for you. Use the search or the topic filters to quickly find what you need.

Johanniskraut: Nebenwirkungen & Wechselwirkungen im Überblick

St. John's Wort: Side Effects & Interactions Explained

St. John's wort is one of Europe's best-known herbs – and one of the few where "herbal" doesn't mean "uncomplicated." Here's why: St. John's wort changes the way your body...
Scheunengut Redaktion
Phenylalanin: Nebenwirkungen und Sicherheit

Phenylalanine: Side Effects and Safety

"Contains a source of phenylalanine" — that phrase sits on every can of diet soda, and it trips a lot of people up: what does a sweetener warning have to...
Desmodium: Nebenwirkungen & Sicherheit klar erklärt

Desmodium: Side Effects & Safety Explained

Curious about Desmodium and wondering how well you'll tolerate it? The short answer: this West African plant is generally well tolerated in traditional use, but there are a few things...
Malte Demmler
Lungenkraut: Nebenwirkungen und Sicherheit im Überblick

Lungwort: Side Effects and Safety at a Glance

Lungwort has a reputation as a mild, well-tolerated herb — and that reputation is well-earned. Still, search for lungwort supplements and you'll keep running into the same term: pyrrolizidine alkaloids,...
Malte Demmler
Ashwagandha: Gefährlich? Nebenwirkungen im Überblick

Ashwagandha: Dangerous? Side Effects at a Glance

So you've picked up some ashwagandha, or you're weighing whether to – and somewhere between glowing reviews and headlines about liver damage, you're wondering: is this stuff actually dangerous? The...
Malte Demmler
5-HTP: Nebenwirkungen & sichere Einnahme

5-HTP: Side Effects & Safe Use

Before you order 5-HTP, you want to know what to actually expect — not just what it's supposed to do for you. The honest answer: most people tolerate 5-HTP well,...
Malte Demmler
Vitamin B12: Nebenwirkungen & Sicherheit ehrlich erklärt

Vitamin B12: Side Effects & Safety, Honestly Explained

Just took a B12 capsule and now you're wondering if that was a good idea? Short answer: yes, and a very safe one. Vitamin B12 is one of the best-tolerated...
Malte Demmler
Spermidin Sicherheit: Nebenwirkungen ehrlich erklärt

Spermidine Safety: Side Effects, Honestly Explained

Thinking about taking spermidine and wondering what it actually does in your body – and whether it comes with side effects? Fair question. The short answer: spermidine is one of...
Malte Demmler
L-Tyrosin: Nebenwirkungen, die du kennen solltest

L-Tyrosine: Side Effects You Should Know

Taking L-tyrosine, or thinking about starting — while also having antidepressants, thyroid medication, or blood pressure drugs in your cabinet? Then it's worth taking a closer look before you swallow...
Malte Demmler
Piperin Nebenwirkungen: Was du wirklich wissen musst

Piperine Side Effects: What You Really Need to Know

You searched for “piperine side effects” because your curcumin, resveratrol, or berberine supplement contains piperine, and you want to know what you’re signing up for. The short answer: at the...
Malte Demmler
L-Citrullin: Nebenwirkungen & worauf du achten musst

L-Citrulline: Side Effects & What You Should Know

L-Citrulline is known as the gentler alternative to L-arginine – which is why many people reach for higher doses without a second thought. And rightly so: even large amounts typically...
Malte Demmler
Koffein-Nebenwirkungen: Anzeichen erkennen & sicher bleiben

Caffeine Side Effects: Spot the Signs & Stay Safe

Your heart suddenly starts racing, even though you're just sitting quietly at your desk. Or you're lying awake at midnight, though your last coffee was hours ago. For most people,...
Malte Demmler
Elektrolyte: Nebenwirkungen & wann Vorsicht zählt

Electrolytes: Side Effects & When Caution Matters

Electrolytes are about as low-risk as supplements get — which is exactly why they end up in your routine several times a day without you noticing: in a sports drink,...
Malte Demmler
Rotklee: Nebenwirkungen & sichere Einnahme

Red Clover: Side Effects & Safe Use

Red clover is the go-to plant for many women in menopause who'd rather listen to their body than reach straight for hormones. So here's the fair question upfront: what does...
Malte Demmler
Bockshornklee: Nebenwirkungen erkennen, sicher dosieren

Fenugreek: Recognize Side Effects, Dose It Safely

Fenugreek is one of the oldest cultivated plants in the world — and remarkably easy to get along with. Most people tolerate the small, spicy seeds without any issues. Still,...
Malte Demmler
Thymian: Nebenwirkungen – so trinkst du ihn sicher

Thyme: Side Effects & How to Drink It Safely

So you've just brewed a cup of thyme tea for that cough and now you're wondering if it's actually safe? Short answer: yes, very much so. Thyme is one of...
Malte Demmler
L-Theanin: Nebenwirkungen und Sicherheit

L-Theanine: Side Effects and Safety

L-Theanine is one of the best-tolerated compounds in the entire supplement world — which is exactly why an honest look at its side effects and safety is worth your time....
Malte Demmler
Nattokinase: Nebenwirkungen, Risiken & Sicherheit

Nattokinase: Side Effects, Risks & Safety

Nattokinase has a reputation as a powerful enzyme for circulation and healthy blood flow — which is exactly why it deserves a closer look than most other supplements before you...
Malte Demmler
Yamswurzel: Nebenwirkungen & Sicherheit klar erklärt

Wild Yam: Side Effects & Safety, Clearly Explained

Wild yam has a reputation as a gentle “woman’s herb” – but how well is it actually tolerated, and what should you watch out for before taking it? The short...
Malte Demmler
Berberin Nebenwirkungen: Fakten statt Panikmache

Berberine Side Effects: Facts, Not Fear-Mongering

You searched for “berberine side effects” because you want to know what you’re getting into — not because you need something to worry about. Here’s the good news first: most...
Malte Demmler
Kurkuma Nebenwirkungen: Risiken erkennen, sicher einnehmen

Turmeric Side Effects: Know the Risks, Take It Safely

As a spice, turmeric is about as gentle as plants get — people have eaten it in curries and golden milk for centuries without a second thought. Concentrated curcumin extracts...
Malte Demmler
Knallgelber Urin: Der Beweis, dass es angekommen ist

Knallgelber Urin: Der Beweis, dass es angekommen ist

Du gehst morgens aufs Klo, schaust runter – und da leuchtet dir ein Gelb entgegen, das du von deinem Körper nicht kennst. Neon. Fast schon grünlich. Der erste Gedanke ist...
Zu viel Magnesium? Nebenwirkungen & Obergrenze

Too Much Magnesium? Side Effects & Upper Limit

Magnesium is one of the most popular supplements out there – for calf cramps, for your muscles, for stress, or just "to be on the safe side." Because it's seen...