Doxycycline is used in the treatment of Bacterial infections, Acne. View Doxycycline’s uses, side-effects, drug interactions, expert advice and user FAQs only on 1mg .com. Doxy L 100mg Tablet is a versatile antibiotic medicine which can be used to treat many different infections caused by bacteria. These include infections of the blood, brain, lungs, bones, joints, urinary tract, stomach and intestines. It can also be used to treat sexually transmitted diseases. It stops the growth of the bacteria causing the infection and clears the infection. It also helps treat as well as prevent diarrhea that may occur due to the use of this medicine or due to stomach/gut ... Doxy Tablet is unsafe to use during pregnancy as there is definite evidence of risk to the developing baby. However, the doctor may rarely prescribe it in some life-threatening situations if the benefits are more than the potential risks. 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.