Combining anti-microbials and probiotics

Has anyone had success with taking anti-microbials (example: oregano oil, colloidal silver, etc.) and also probiotics? If you have had success, what has your protocol been (do you take them together? One before the other)? What specific probiotic strains have been most effective? I've doing a lot of experimenting with probiotics and anti-microbial supplements and there are some days where I feel very very well and some days where I don't feel as well but I have not been able to figure out the pattern on how to take it, when to take it, what combination, etc.

Years back I did both, opposite times of day, in morning OOO I think and probiotic VSL#3 before bed.
These 2 were the very few supplements that were "keepers" for me. Haven't needed them for years but thought they were each beneficial. In fact I went looking for my OOO for a skin issue just yesterday, haven't located it yet.

Just a drop or 2 of OOO in half glass of water was sufficient.