Marilyn listened to the Ravenclaw chick carefully, her eyebrow scunching together in thought.

"So, basically you have this cluster of ingredients and you have to find one or more other ingredients to render the indiviual components of the overall potion ineffective. Usually this slows, or stops, the effects...Since we aren't limited this to just poisons, yes? Even though with poisons, those most common can be cured with the bezoar stone." Marilyn averted her gaze from the Professor to the Ravenclaw girl. "Just saying..."