Although this more than a year after your ordeal, I am having the same issue with Aurobindo. An awful tightness under the righ rib and difficulty breathing. I initially thought it was my seasonal asthma flaring up but when I stopped taking the medication for 3 days, The symptoms subsided. I take half of the dosage today ( 15mg) and I am experiencing the aforementioned side effects.
I reported it to my doctor and pharmacist and they are willing to help me procure a different brand, as well as report this incident to the manufacturer and FDA.
I am hoping that this post can help another person out there know that they are not alone.