Check out PS-100 which is a brain chemical that aids in your sleep. It is also a methylation supplement. PS + is an alternative version of it that contains some different brain chemicals. I highly recommend it. Only get the high grade stuff (pure encapsulations is a top brand, its like $100 per bottle for 3 month supply).
I also take min-tran which is an iodine supplement to help with my night time urination. It works ok. You could take it with every meal if you have a chronic problem.