Plantokines, Inc. Is Focused On One Thing: Your Immune Health Based in Sacramento, California, Plantokines, Inc. combines millenniums-old, traditional herbal knowledge with the most groundbreaking area of immunology. The company focuses on working with the power of cytokines and immunoglobulins for immune health. Yet unlike many other companies producing similar products, Plantokine does not source its ingredients from blood plasma extracts. Plantokine sources its ingredients from plants - and not genetically engineered ones. We make a simple brew of two common herbs - hibiscus and tea - and tweak it slightly through a unique patented process in order to extract their cytokines. No genetic splicing and no animal or human plasma extracts. And less expense.