taking a good pro-biotic while on something that may be actively killing is just a waste of money and diluting the effectiveness of the antibiotic/anti-fungal After to rebuild... no clue.
How long does it take to restore gut flora? I was put on an anti-fungal to treat yeast but it seems to have killed off good bacteria as well. I have been on good probiotics for a long time but it didnt seem to prevent this from happening. How much should I take and how soon should I notice improvements again!
Probiotics won't stop your gut bacteria from dying, it will just replace what does with new stuff. Sometimes more dies off than gets replaced and you still have to give your levels a while to recover. If you want, you can try adding in some fermented veggies to increase your level of probiotic intake even further.
But you may have other issues at play as well that go beyond the whole probiotic and gut bacteria issue. Perhaps you need to get more soluable fiber in your diet which acts as a PREbiotic for gut bacteria because it uses this fiber as a food source. This supports the health of the bacteria, keeping it alive longer, rather than simply replacing (what might be) quickly dying bacteria. It doesn't, in my opinion, do much good to simply replace gut bacteria that dies rapidly. If you have a reason to suspect this is what is happening, it might make more sense to ask yourself why it's dying rapidly and address that first, and THEN look to normalizing your levels of gut bacteria.