Table 1 Search Strategy for Pubmed

Pubmed

(boswellic acid OR Boswellia OR Boswellia sacra OR Boswellia serrata OR Boswellia carteri OR Boswellia carterii OR Shallaki OR Salai OR aflapin OR 5-loxin)

AND

(Osteoarthritis OR Osteoarthritides OR Osteoarthrosis OR Osteoarthroses OR Arthritis, Degenerative OR Arthritides, Degenerative OR Degenerative Arthritides OR Degenerative Arthritis OR Osteoarthrosis Deformans)

AND

(randomized controlled trial [pt] OR controlled clinical trial [pt] OR placebo [tiab] OR drug therapy [sh] OR trial [tiab] OR groups [tiab] OR clinical trials as topic [mesh: noexp] OR Clinical Trial OR random* [tiab] OR random allocation [mh] OR single-blind method [mh] OR double-blind method [mh] OR cross-over studies)

NOT

(animals [mh] NOT humans [mh])