Guides
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.
Hypericin and Hyperforin: The Active Compounds in St. John's Wort
Anyone who looks into St. John's wort (Hypericum perforatum) quickly comes across two names: hypericin and hyperforin. They are considered the characteristic compounds of the plant and appear on many...
Haematococcus pluvialis: The Blood Rain Alga Behind Astaxanthin
When a pond or puddle suddenly turns blood red, a tiny alga is often behind it: Haematococcus pluvialis, aptly known in German as the blood rain alga (Blutregenalge). This unassuming...
Elemental Magnesium: What the Number on the Label Actually Means
"Magnesium 750 mg" is printed in bold on the tub – but how much magnesium do you actually get from that? The answer hinges on a single word that turns...
Bergamot Extract: Polyphenols and What's Really Behind Them
Most people know bergamot as the fragrance note in Earl Grey tea or from perfumery. Less well known is that the peel and juice of the fruit contain an unusually...
Artemisinin: The Compound in Artemisia annua (Sweet Wormwood)
Few secondary plant compounds have attracted as much attention in recent decades as artemisinin, the compound that gives sweet wormwood (Artemisia annua) its name. Anyone who looks into this plant...
Andrographis paniculata (Kalmegh): Andrographolides and Use
Hardly any plant carries its reputation as literally on the tongue as Andrographis paniculata. In India it's called Kalmegh; in English-speaking regions, simply the "King of Bitters." Behind this name...
Zinc-Rich Foods: The Best Sources
Zinc is one of the most unassuming trace elements - and at the same time one of the most important: the body needs it for hundreds of enzymes but can't...
How Long Until Supplements Start Working?
"I've been taking this for a week now - why don't I notice anything?" This question comes up with almost no topic as often as with dietary supplements. The honest...
Whey or Plant Protein? The Comparison
Few questions come up as often in everyday sports and nutrition talk: whey or plant? Both camps have vocal supporters, and both powders sit side by side on our shelf....
Wheatgrass: Nutrients, Use, and Quality
Few greens are as polarizing as wheatgrass: for some, the intensely green juice is a daily ritual; for others, a mystery on the health-food store shelf. Yet behind the hype...
Vitamin K Deficiency: Signs and Risk Groups
Vitamin K is the quiet workhorse among the fat-soluble vitamins: hardly anyone talks about it, yet without it blood clotting simply doesn't work. A genuine deficiency is rare in healthy...
Vitamin E Deficiency: Signs, Causes, and Requirements
Vitamin E is considered the classic cell-protection vitamin - and yet you rarely hear of anyone actually having too little of it. There's a reason for that: a genuine deficiency...
Vitamin D Foods: Where Is Vitamin D Really Found?
Few nutrients cause as much confusion as vitamin D. It's known as the "sunshine vitamin", yet it's still found in some foods - just in very different amounts. So the...
Vitamin C-Rich Foods: More Than Just Citrus Fruits
Think of vitamin C, and an orange immediately comes to mind. Yet in the ranking of the best sources, this citrus fruit is average at best. Red peppers, blackcurrants and...
Vitamin B6 Deficiency: Signs and Requirements
Vitamin B6 is one of those inconspicuous nutrients: as long as there's enough of it, you notice nothing. When it's missing, the first hints are often so general that they're...
Vitamin B2 Deficiency (Riboflavin): Signs
Cracked corners of the mouth that simply won't heal, a burning tongue, or eyes that react sensitively to light: such complaints are quickly blamed on dry heating air or too...
Vitamin B12 and Vegan Diets: Foods and Why Supplementation Matters
Few nutrients spark as much discussion in vegan eating as vitamin B12. Some people swear by sauerkraut and algae, others consistently reach for the drops. So what's actually true? The...
Vitamin B1 Deficiency (Thiamine): Signs and Causes
Thiamine, better known as vitamin B1, was the very first vitamin that science ever isolated - and to this day it remains one of the most underrated nutrients. The body...
Vitamin A-Rich Foods and Beta-Carotene
Few nutrients wear as many faces as vitamin A: sometimes it's already there, ready-made, in liver; other times your body has to build it itself from the beta-carotene in a...
Should You Take Breaks From Supplements?
Hardly any question comes up as often around dietary supplements as this one: does the body need a break now and then so it doesn't get used to the supply?...
Shiitake: Functional Mushroom, Nutrients and Use
Hardly any mushroom has made it as far as the shiitake — from the Asian wok all the way to the supplement shelf. In Japan and China, it has been...
Foods High in Selenium: Brazil Nuts and More
Selenium is a trace element the body only needs in tiny amounts — and yet getting the right amount determines a whole range of functions. In Central Europe, the soil...
Black Seed Oil: Thymoquinone, Use and Quality
Hardly any plant oil has such a long-standing reputation as black seed oil: in Egypt, India and the Arab world, it has accompanied people for thousands of years. It's pressed...
Sea Buckthorn: Vitamin C, Omega-7 and Use
Hardly any native wild fruit is as densely packed as the sea buckthorn berry: bright orange, sour to tart, and traditionally prized as one of the richest vitamin C sources...
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