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.

OPC kaufen: Gehalt, Reinheit & worauf achten

Buying OPC: Content, Purity & What to Look For

OPC is one of the most popular plant-based dietary supplements in German-speaking countries – and one of the products where the figures on the packaging are particularly easy to misread....