ESSIAC® is an herbal formula which helps support the immune system*. Regular users may want to consider using the ESSIAC® program as guidance to ensure that a consistent regime is followed. Below are the daily suggested amounts, should you choose to follow the program. Suggested Use: 2-4 teaspoons (10-20 ml) twice daily Benefits: No mixing required Notes: No food 1 hour before and after consuming ESSIAC® No juices 30 minutes before and after consuming ESSIAC® Not to be taken during pregnancy, by nursing mothers or infants Frequently asked questions: How long will one bottle last? One bottle will last 1-2 weeks, depending on the daily intake. How long will the ESSIAC® Extract formula keep? Unopened bottled ESSIAC® Extract formula will keep for approximately two years. Once the bottle has been opened, it will retain its potency and freshness for approximately 2 weeks.