That is good at least. I am lucky in that I am not sensitive to antibiotics.
we struggle with black mold in the shower. Have tried everything but it keeps coming back. Any suggestions ?
Clean with bleach solution 50/50, thick bleach and water. Let it dry well.
Depending on the state of the tiling it either needs to be re-grouted after a great clean and air dry, or tiling needs to be redone starting with water proofing under.
Where there is paint like ceiling (and walls if not tiled all the way up, in bathroom ) paint it with Kitchen and Bathroom paint that contains anti-fungal agents. We used KB sheen (not PVA, not emamel, but washable) from paint master as it has a 5 year warranty.
If you have that mold also check wall/cupboards on otherside(s) of shower.
Once all good clean at least once a week with anti mold shower cleaner or bleach water mix (can be weaker if used as prevention), but be careful of your clothes. That's why I rather use the shop bought stuff.
And you can laugh:
I use hand wash clothing powder mixed with very little powder/lots water ration to wash the floors.