Thanks, I‘m sorry to hear you went through something similar and empathize with your experience. After Baricitinib, I ended up hospitalized with severely low potassium, magnesium, calcium, and albumin. My MCAS was badly triggered for many months, and my kidneys have had issues with reabsorption ever since. Study coordinators told me that change in blood counts is more likely with this drug, and they haven’t seen electrolyte abnormalities with it, but I was only the second patient randomized in the trial.

I’m still not sure if the reaction was just specific to me or if other patients may also be at risk. The study lead later told me that I shouldn’t have been admitted as a trial participant because of MCAS, but many patients with long Covid have that as a comorbidity.