NB Pure Liver Fend, Cleanse, 90 Capsules. Vegan, Gluten Free, Non GMO, Cruelty Free Dietary Supplement. A complete liver support designed to cleanse toxins and promote optimal liver function. NB Pure has been helping people become the best version of themselves for over 25 years, by ensuring all products are made from the best all-natural ingredients. Liver Fend is great for rejuvenating liver functions, ridding the body of toxins, and recovery after taking medication.