This post has had a major update. Our knowledge about OPC from grape seeds has moved into a new, comprehensive guide: there we explain what OPC actually is, what research really says about it, how to take OPC properly and how to recognise a good product.
Also included: the story from the peanut to the grape seed, three myths fact-checked, our intake infographic and the big product guide through the Viterna range, from capsules and powders to the combination with Q10.
This way to the current guide:
OPC from grape seeds: what's really behind it. Honestly explained, without miracle promises.
Looking for our OPC recommendation right away? You will find all details, bundles and customer reviews on the detailed Optiolex OPC page.