I think it's important to know what the side effects could be and have the routine tests to monitor your response to the drugs. However, there are plenty of us who tolerate the drugs with only minor side effects so don't let that scare you. It is important to take a good probiotic (at least 4 hours apart from any of the antibiotics). I take Lactobif 30 and it is working well for me.
Jarro-dophilus is another one that is often recommended in this group. Wishing you the best!