life need potion

you have a mortal disease with no know way to cure it but when you start to think there is no way to cure it a lose all hope you find a "potion merchant" so using your last drop of hope you go check if you find anything. you go in th shop but you dont find anyone in the store so you take a random potion place the money writed in the cash register and leave, when you go back home you place it on your table and stare its pink bright color