Rondoxy 100mg is an antibiotic medication containing doxycycline, used to treat a wide range of bacterial infections. It works by inhibiting bacterial protein synthesis, preventing the growth and spread of bacteria. Commonly prescribed for conditions like respiratory infections, acne, urinary tract infections, and certain sexually transmitted infections, Rondoxy is effective against both gram-positive and gram-negative bacteria. It should be taken as directed by a healthcare professional to ensure optimal results.