I used to drink tonic water for the quinine in it it pretty much stopped my cramps HOWEVER you CANNOT drink this during pregnancy it is BAD for bubs very very BAD. For some reason if quinine does help its a electro-magnetic muscle tissue problem and other methods won't really help. If bananas or milk etc help them its a vitamin issue..

It can also be caused by a blood clot. I went to the hospital with my cramps one day it was so bad all they could offer was some painkillers but they said that sometimes they can be caused by clots and checked me over for them. Maybe see your dr and have a talk to them it is better to be safe than sorry