Super duper antibiotics

I had a growth on my body which got infected recently :( I went to my family doctor and wanted him to perform a minor surgery to "zap" the growth off! However, he said that we should try to remove the growth with antibiotics and see how it goes.
He prescribed me the antibiotics below. It was @!@#$$%^# strong! The side effect was that I had diahorrea the whole time I was on the course and my stomach feels bad ALL the time. :( It was horrible horrible horrible. I could not wait to be rid of this antibiotics!!
The outcome: the growth is still around although the infection "died" down a little. Sigh...