Good to hear from you. I take liquid (refrigerated) probiotics ie live not freeze dried I just reckon they are more easily biologically absorbed! I take capsules when away the more more per billion per capsule and I only go to Whole Foods for them.
When I first took the ethambutol I had my eyes tested every four months for year. It was expensive but it to give me a baseline for what I can tolerate . I was fine no problems. I haven't had my eyes tested and I'm not going to unless I have to be on the big 3 for over 6 months thi time. Last time I was on the big 3 for a year every other day. As much as it's the optic
Nerve that can be affected it's the possible colour differentiation problems that can be more probable. Only we are all different. Id say check it out with the eye exams to be conservative one can't loose!
Hang on there!