This effective formula has an expectorant action that makes it useful for expelling parasites and worms. The green hull of black walnuts is a miraculous parasitic. Once it turns black, it is useless. CAUTION: Do not use if pregnant. Use in small doses. Pure wormwood oil is a strong poison. Longer use of wormwood can cause nausea, vomiting, insomnia, restlessness, vertigo, tremors, and seizures.Made with love and the highest quality ingredients, including ionized water and grain alcohol. I include an information sheet telling about the herbs and any drug interactions.