It's tincture, made from the lobelia plant. An ancient remedy for poisonous bites.
A cure? We hope. Do you really think it will have some effect? It's our last resort, sire. Perhaps you should allow him to rest. I will not leave him. This is only the beginning. The prince lives. I thought we'd lost you. Don't worry, father, I'm not going to die. I think there's something watching over me, keeping me from harm. Maybe you're right. On your long journey to become king, you'll need a guardian angel. I shall inform the court that their prince lives.