Tetracycline is widely used as an antibiotic to treat a variety of bacterial infections. It is effective against respiratory tract infections, urinary tract infections, skin infections, and certain sexually transmitted diseases like chlamydia. Additionally, it is used in the treatment of acne and rosacea due to its anti-inflammatory properties. In veterinary medicine, tetracycline is commonly administered to livestock to prevent and treat bacterial infections. It is also used in aquaculture to control bacterial diseases in fish. Beyond its medical applications, tetracycline is utilized in research as a selective agent in molecular biology to identify genetically modified organisms. Its ability to inhibit protein synthesis makes it a valuable tool in both clinical and laboratory settings.