Moov Pain Specialist is effective in joint pains & inflammation backache sprains strain myositis fibrositis sciatica. It's a proprietary Ayurvedic medicine. The spray features a Fast Acting Formula which is only designed for external use. Plus the spray formula is made to penetrate deep inside and Moov produces warmth to target and relieve pain. It's flammable could prove hazardous while smoking cigarettes grilling lighting gas stove or other similar activities.