Thanks for posting your query.
I am Dr.Ratnakar Kini and I am pleased to assist you.
There is no specific diet needed for treating C diff infection. Since probiotics are beneficial, you can consider taking yogurt.
, the dosage is correct only. If there is no improvement in symptoms, you can increase the dose to 500 mg three times a day for 10 days.
I hope that answers your question.
Let me know if I can assist you further.