So where do get this Famous Castor oil?

Natasha • Second baby on the way, I am Blessed♡♡♡
My due date is in 3 days and don't have another check up for 5 days. So if they don't give me an induction date this Wednesday I will prob want to try this castor oil. It seems to work :)?? If I don't go into labor on my own by Monday my due date or Wednesday with no induction date set, I will want to turn to this... So ladies direct me where to get it, this will be my last resort though..