Yes, it is powerful...maybe that's why they call it the spice king.
I've seen this extract mentioned before as well along my travels.
"Extracts of Boswellia serrata have been clinically studied for osteoarthritis and joint function, particularly for osteoarthritis of the knee, with the research showing a slight improvement of both pain and function compared to a placebo. Positive effects of Boswellia in some chronic inflammatory diseases including rheumatoid arthritis, bronchial asthma, osteoarthritis, ulcerative colitis and Crohn's disease have been reported. A Boswellia extract marketed under the name Wokvel has undergone human efficacy, comparative, pharmacokinetic studies. Some see Boswellia serrata as a promising alternative to NSAIDs, warranting further investigation in pharmacological studies and clinical trials."