Leaky gut is caused by candida. Candida drills holes in the intestines to attach itself. If you get rid of candida you will get rid of leaky gut. The school of thought of this is first clear out as much candida as you can and then leaky gut will heal . you may also try glutamine or colostrum to heal it up faster.
Probiotcs depends on how you are doing with caprylic acid. If you are seeing lots of candida theyn maybe tow it for two weeks straight. Then a day here and there, maybe once a week replace with probiotics. Probiotic enemas are good too.