Can eating pickles cause you to pee green?

Eating pickles will not cause your pee to turn green. The most likely cause of green pee is a medication called methylene blue. This medication is used to treat a variety of conditions, including urinary tract infections and methemoglobinemia, a condition in which the blood does not carry enough oxygen. Green pee is a harmless side effect of this medication and will usually go away after you stop taking it.