The study was designed as a randomized controlled clinical trial. Total subjects selected were allocated into three study groups, Group I (Test group), Group II (Positive control group) and Group III (Negative control group). Group I: Included 8 patients with severe chronic periodontitis managed by Scaling and root planing and local delivery of lycopene loaded in solid lipid microparticles. Group II: Included 8 patients with severe chronic periodontitis managed by Scaling and root planing only. Group III: Included 8 patients with clinically healthy periodontium.