Lenteclin LB 100mg Capsule is a combination pharmaceutical formulation containing Doxycycline 100mg, a broad-spectrum tetracycline antibiotic, and Lactobacillus 5 Billion Spores, a probiotic supplement. Doxycycline acts by inhibiting bacterial protein synthesis, effectively treating a wide range of bacterial infections including respiratory tract infections, urinary tract infections, skin infections, and certain sexually transmitted diseases. The inclusion of Lactobacillus spores helps restore and maintain the natural balance of gut flora, which may be disrupted during antibiotic therapy, thereby reducing the risk of antibiotic-associated diarrhea and other gastrointestinal disturbances. This synergistic combination enhances patient compliance and therapeutic outcomes by minimizing adverse effects commonly associated with antibiotic use. Lenteclin LB is indicated for the treatment of susceptible bacterial infections where preservation of intestinal microflora is desired. It should be administered as prescribed by a healthcare professional, with caution advised in patients with hypersensitivity to tetracyclines or probiotics. Use during pregnancy and lactation should be under medical supervision. Common side effects may include mild gastrointestinal discomfort, nausea, or allergic reactions. Proper adherence to dosage and duration is essential to prevent antibiotic resistance and ensure optimal efficacy.