â€œI was diagnosed with cancer (GIST in my upper stomach) in the spring of 2018. While I was waiting for my surgery (which appears to have been very successfulâ€“ thanks for asking), I rubbed frankincense on my stomach every day. The serrata Ceres and Co carries is of the highest quality. There are several grades of Boswellia serrata. If you find it cheaper elsewhere, you may be getting a lesser grade.â€ - Susan Siemers, Owner and Founder Ceres & Co.