Active ingredient: doxycycline

Brand names include: Doxy Tablets, Doxyhexal Tablets, Doxylin

Note about medicines names

Most medicines have two names: the active ingredient and the brand name. The active ingredient is the chemical in the medicine that makes it work. The brand name is the name given to the medicine by its manufacturer. There may be several brands that contain the same active ingredient. This website uses active ingredient names (e.g. amoxycillin), with brand names in brackets and with a capital letter (e.g. Amoxil). We also discuss medicines in groups or ‘classes’ when their effects or actions are very similar.

To find out more about active ingredients and brand names read our brand choices information.

What is doxycycline?

Doxycycline is an antibiotic used to treat infections caused by bacteria. It can be used to treat certain respiratory tract infections and their complications, as well as some other bacterial infections. It belongs to the tetracycline family of antibiotics.

Doxycycline can be used to treat some respiratory tract infections caused by bacteria including pneumonia, sinusitis, and recurring (chronic) bronchitis.

Find out more about what infections doxycycline is used for, how it works, who can take it, and the side effects and interactions of doxycycline.

There are many different brands of doxycyline. Read about the brands of doxycycline and find the consumer medicines information leaflet for your brand.

  • Rossi S, ed. Australian Medicines Handbook [online]. Adelaide: AMH, July 2012.
  • Sweetman S, ed. Martindale: The complete drug reference [online]. London: Pharmaceutical Press (accessed 18 October 2011).
  • Antibiotic Expert Group. Therapeutic Guidelines: Antibiotic version 14; Doxycycline. Melbourne: Therapeutic Guidelines Limited, 2012 (accessed 15 May 2012).