Docxia 100 mg Injection 1's is an antibiotic medicine used to treat bacterial infections such as urinary tract infections, intestinal infections, respiratory infections, eye infections, skin infections, sexually transmitted infections, and periodontitis. This medicine contains doxycycline which works by inhibiting the protein synthesis of the bacterial cell and thereby helps fight infection-causing bacteria. This medicine is not effective for treating viral infections. Common side effects include pain, itching, swelling or redness at the site of injection, nausea, vomiting, or diarrhoea.