rosacea
"Here's the issue, my rosacea abated for the most part while using doxycycline monohydrate 100mg twice daily. The major issue is that I started retaining fluid for no apparent reason (went to doctor, Kidney and endocrinology specialists) and after stopping this drug, the swelling went down remarkably (> 15 lb loss in 4 days). This is a significant problem with other antibiotics also, Levaquin, Ciprofloxacin, etc. Even if a limited number of users have this it is significant. I hope that reading this helps someone else, I suffered for almost 2 years."