Treatment for chest infections such as pneumonia,
-Mouth infections.
-Infections resulting from some types of bites
-Sexually transmitted infections.

Oxytetracycline works by interfering with the ability of bacteria to produce essential proteins. Without these proteins, the bacteria cannot grow, multiply and increase in numbers. … Oxytetracycline is a broad-spectrum antibiotic, active against a wide variety of bacteria.

NOTE

It is also important that you do not drink milk within two hours (either before or after) of taking oxytetracycline. This is because both food and milk can reduce the amount of medicine absorbed by your body, making it less effective in fighting infection.

HOW TO TAKE OXYTETRACYCLINE
Always take Oxytetracycline exactly as your doctor has
told you.
Swallow each tablet whole with a glass of water, ideally on
an empty stomach, (either one hour before or two hours
after a meal).
Do not take Oxytetracycline immediately before going to
bed.