Efficacy Study on Symptomatic Control of Patient With Knee Osteoarthritis Between 14% of Plai (Plaivana®) to Placebo Gels

The essential plai cream has anti-inflammatory and antimicrobial effects (Wasuwat1989, Giwanon 2000, Pithayanukul 2007, and Tripathi 2008). Active chemicals of plai cream are composed of sabinene, alpha and gamma tepinenes, terpinen 4-ol and (E)-1-(3,4-dimethoxyphenyl butadiene (DMPBD). The DMPBD has a property of anti-inflammatory activity(Ozaki 1991, Jeenapongsa 2003). Plavina® 40 mg in 100 gm (contains DMPBD of …%). This product was supplied in lacquered aluminum collapsible tube containing 100 gram cream packing.