You have my sympathy -........Diclofenac or Volterol if your insides can stand it. .
If you use an asthma inhaler and take Diclofenac it may well affect your breathing when
riding hard. I found out to my cost too late, on the Marmotte last year. I couldn't get the
pain killing injections in my lower back but was prescribed Diclofenac (a week before the event).
It wasn't until the beginning of the first climb on the Marmotte that I realised that something was wrong, when I couldn't keep up with the group I was riding with, even though my heart rate was only registering 135 bpm. Once it got to that level it felt as though someone was standing on my chest.
I had to ride the whole event very conservatively to keep my hr below 135. Consequently
I finished (inside the time limit) with a very slow time. On the positive side, I felt very fresh
when I finished because I didn't go into the red zone.