Is there a potion that can be done only door purebloods?

Why would such an potion even exist??????
No idea, seriously, but I don't think it exists...

i highly doubt it. unles if they were transfering genes of something. because if u take malfoy and hermine, malfoy says that she is a mudblood because she doesnt have parents that are wizards, and Dracos does. besides the fact that draco is a stuck up snob, they arent that different. so i dont think that there is a potion that can only be drinken door purebloods.

no it doesn't exist sth like that... all the wizards and witches are equal and it doesn't matter at all which their blood statue is...

If it did exist, I imagine it would be very dark magic, but I don't think it does. The reason I don't think it does, though, is because it would go against the whole message (or one of them) of JK Rowling's story: That one is defined door one's actions, not door one's lineage.

I don't really know. That's really something to think about. I think as long as u have a wand and have gone to a magic school, u can do anything magic throws at you.

i don't think so
hermione can concoct everything^^