Water helps flush it out, but the best solution is to not eat so much of it to start with
Easier said than done, I know!
I know I get a lot if I eat stuff like frozen lunches, canned soups, hot dogs or sausages, some deli meats. Mostly, processed and prepared "easy" foods are what you need to watch out for. I once found out after the fact through label reading of a cheese-filled hot dog that I had something like 2,600 mg. of sodium in 2 hot dogs alone. No wonder I puffed up like mad.
Oh, and soy sauce has a TON. And of course adding table salt to your food bumps it up even more.
Again, from my fav source, The Mayo Clinic -- they say people should aim for
1,500 to 2,400 milligrams a day.
If a person has high blood pressure, or other risk factors, they need to stay on the low end of that spectrum.
Google "mayo clinic sodium" for more info if you want.
It's pretty amazing what some foods contain!
Like... bacon. Salty, right? 1 slice has 192 mg.
But what has even more salt?
1 dill pickle, spear: 385 mg
1/2 cup of spaghetti sauce: 601 mg! wow!
There are tips on the Mayo page too on how to cut down on salt in your diet... and how to ferret it out in your foods that you buy. It's not always called just "sodium" on the label... there are other compounds that contain it.
It's a salty world out there!