Doxycycline is a tetracycline antibiotic used to treat many different bacterial infections such as acne, urinary tract infections, intestinal infections, and others. Sign in to deliver HIPAA-compliant, reliable telehealth visits—accessible from any device, anywhere. Doxy 100 mg tablet has been used in some COVID-19 treatment protocols, particularly for managing mild symptoms or secondary bacterial infections. However, it is not an antiviral and does not cure COVID-19. Doxy -1 100 mg Tablet is used to treat bacterial infections. It treats urinary tract infections, intestinal infections, respiratory infections, eye infections, sexually transmitted infections (like gonorrhoea and syphilis), gum infections, diseases (like periodontitis), and others. Besides this, it also treats acne-like lesions caused by rosacea. However, it does not treat facial redness caused by rosacea. It contains Doxycycline, which prevents the growth of bacteria. It may cause some ...