@arecchie, welcome. I'm glad that you found something that works for you. I see you are a new member, so I'd like to point you to the Community Guidelines (https://connect.mayoclinic.org/blog/about-connect/tab/community-guidelines/)

Guideline number 1 encourages members to share what works for them, but to refrain from telling other people what they should do. Probiotics come in many different strains, doses and vary in quality. Here's a helpful guide:
- An introduction to probiotics https://www.mayoclinichealthsystem.org/hometown-health/speaking-of-health/an-introduction-to-probiotics
- How to choose a probiotic https://store.mayoclinic.com/education/probiotics-for-digestive-well-being/

As @janetbender points out, one should always check with their doctor before starting supplements and get a recommendation on what may or may not be right for you. And for @et1055, milk may not be an option. All this to say, everyone is different. Tips are welcome. Be sure they are right for you. Experiences and information shared by members on the Mayo Clinic Connect are not a substitute for professional medical advice, diagnosis or treatment. Never disregard professional medical advice or delay in seeking it because of something you have read on the community.

Back to you @arecchie. What do you find is the benefit of taking Hydrea at night? Was a probiotic suggested for you to help control mouth sores?