I just listened to vegan Dr Klapper talk about the three supplements to take for 6 weeks to help resolve leaky gut syndrome. He didn't state the milligrams to take but the three items were:
Hope this helps someone. Maybe someone else will relisten to Klapper and add more specific info.
I'm also eating lots of fermented stuff like kombucha, kimChee, sauerkraut, kefir and lots of fermented Asian condiments. I really like stinky fermented bean curd. Tastes like blue cheese.