I will recant my comments re the side-effects of Dupixent side-effects of vertigo/dizziness etc. I have since discovered that coincidentally those symptoms started at the same time I started the Dupixent. I have found the Dupixent to be a life saver in dealing with my State IV COPD/emphysema. My O2 Sats are consistently in the 95 and upper percentile, the secretions have significantly decreased and I can do most things that a 75 y/o woman would want to do aside from terribly strenuous activity. My quality of life has improved so very much! I apologize sincerely for any misinformation that I may have put out there.