This randomized controlled clinical trial will evaluate the effect of virgin coconut oil mouthwash compared with chlorhexidine mouthwash as an adjunct to non-surgical periodontal therapy in patients with stage II periodontitis. Participants will receive scaling and root planing, followed by the assigned mouthwash for 30 days. Clinical periodontal parameters, including plaque index, gingival index, bleeding on probing, probing pocket depth, and clinical attachment level, will be recorded. Gingival crevicular fluid samples will also be collected to assess tumor necrosis factor-alpha levels before and after mouthwash use. The study aims to compare the clinical and biochemical effects of the two mouthwashes.