Holland & Barrett Cranberry Concentrate Tablets contain the nutritional benefits of proanthocyanidins, which give cranberries their red colour. These cranberry supplements also contain 60mg of vitamin C and 6mg of vitamin E, which play a role in supporting the normal function of the immune system. These cranberry supplements are a great alternative to fresh cranberries, which many people find are too 'tart' on their palate. This means that when people eat them, they're usually in recipes with lots of added sugar to counteract the bitterness, which we all know isn't the best for a healthy diet! All the goodness of cranberries but without the sugary carbs.