Inulin is effective to heal the leaky gut; you can add it to many of the foods you eat and highly recommend it. It is also called “miracle fiber” here in the US.
SF722 is a very effective long-term antifungal that you can use. I highly recommend it. The one in your link is the stuff I am using; it is expensive like probiotics, but it should be pretty effective as well.
If you do order it, I recommend taking two capsules twice a day at meals first, and then eventually move up to all 3 meals per day. If you get too much die-off, I would reduce/stop it for a few days and then continue it again.