A total of 120 subjects were divided into 3 groups randomly. Group 1 was given the placebo mouthwash, Group 2 was given the herbal mouthwash ( Hiora K, which contains potassium nitrate derived from Suryakshara plant) and Group 3 was given the non herbal mouthwash (Containing non herbal potassium nitrate). Sensitivity scores (VAS score) were recorded at baseline, 3 weeks, 6 weeks and 12 weeks.