Craving salt

Macy
Down south we have a chicken shack called "Bush's" and they have serendipity/salt spices that I always have to put in my gravy. I keep getting sick when I go without it. I was so sick today! Till I finally went to Bush's and now I'm fine but im craving it again I feel like I haven't eaten in days by I just ate around 6:30. Help!!!