Yes pickle juice can work to relieve constipation and it benefits your health in many other ways as well.
I always drink the leftover pickle juice instead of dumping it out because it's a waste to dump good pickle juice out when you can benefit your health and relieve constipation as well.
The pickle juice helps to soften your stools and helps gets your bowels moving along.
Pickle Juice is also good for relieving an upset stomach and helps to get rid of heartburn as well.
Pickle Juice is also good for detoxing your body so you detox your body and it will help with preventing kidney disease as well as any other health issues.
Drinking a glass or jar of pickle juice should get your bowels moving within a few hours or sometimes sooner.
You can also use molasses to help with constipation and even drink prune juice or eat some prunes which help get your bowels moving as well.