Well, you won't be sticking it out for 2 more days. It will be in your system 5 days after you finish the last dose! Deceptive little drug.

You need to contact your neuro and prescribing doctor to get their advice. Some people with MG can go into a crisis from some antibiotics.

Azithromycin/Zithromycin/Z Pack is relatively contraindicated in MG, but there are those who can tolerate it. Since you are becoming weaker, only you and your docs can decide if the risk is worth it or not.

Do you have seasonal allergies? Any other allergies? Just wondering if you have been assessed for allergies, since they are what can lead to sinus infections.

I hope you are taking acidophilus while on the antibiotic! If so, keep taking it for a couple of weeks. Antibiotics not only get rid of bad bacteria, they tend to get rid of some good ones as well. And if you are at all immunosuppressed, that makes the situation worse and could leave you open to being a C. diff risk, a secondary infection.

I hope you'll feel better!

Annie