Are there any reasons I won't be prescribed baricitinib?

Your doctor may decide not to prescribe this treatment if you have or have had any of the following:

an infection
shingles
lung disease
hepatitis or other liver problems, or kidney disease
heart problems, high blood pressure or high cholesterol, or blood clots (deep vein thrombosis or pulmonary embolism)
stomach ulcers

Hmmm.. from:
https://www.versusarthritis.org/about-arthrit...ricitinib/