Doxycycline (DBL)™
Active ingredients: Doxycycline
Consumer medicine information
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What this medicine is used for
Doxycycline is primarily bacteriostatic and is thought to exert its antimicrobial effect by the inhibition of protein synthesis. Doxycycline is active against a wide range of gram-positive and gram-negative organisms. NOTE: THE 50 mg CAPSULE IS NOT A PAEDIATRIC FORMULATION. MAYNE PHARMA Doxycycline Capsules are indicated in the treatment of infections caused by the following micro-organisms: Mycoplasma pneumoniae: primary atypical pneumonia. Rickettsiae: Queensland tick typhus, typhus fever and Q fever. Agents of psittacosis. Calymmatobacterium (Donovania) granulomitis: granuloma inguinale. Agents of lymphogranuloma venereum. Borreliae: relapsing fever. Chlamydia trachomatis. MAYNE PHARMA Doxycycline Capsules are indicated in the treatment of trachoma, although the infectious agent is not always eliminated, as judged by immunofluorescence. Inclusion conjunctivitis may be treated with oral Doxycycline Capsules alone, or in combination with topical agents. MAYNE PHARMA Doxycycline is indicated in the treatment of infections caused by the following Gram-negative micro-organisms: Vibrio species: cholera. Brucella species: brucellosis (in conjunction with streptomycin). Yersinia pestis: plague. Francisella tularensis: tularemia. Bartonella bacilliformis: Bartonellosis. Bacteroides species. When penicillin is contraindicated, doxycycline is an alternative drug in the treatment of infections due to: Treponema pallidum: syphilis. Treponema pertenue: yaws. Neisseria gonorrhoea: gonorrhoea (see Dosage and Administration). MAYNE PHARMA Doxycycline Capsules is not the drug of choice in the treatment of any type of Staphylococcal infection or infections caused by Streptococcus pneumoniae, Haemophilus influenzae, Streptococcus pyogenes, Streptococcus faecalis, or any type of enteric bacteria because many strains of these organisms have been shown to be resistant to doxycycline. Doxycycline should not be used in these infections unless the organism has been shown to be sensitive. For upper respiratory tract infections due to group A beta-haemolytic streptococci (including prophylaxis of rheumatic fever) penicillin is the usual drug of choice. Doxycycline is active against both pre-erythroycitic and asexual bloodstages of Plasmodium falciparum. The tetracyclines are only partially active against the pre-erythrocytic stages of Plasmodium vivax and protection depends on drug suppression of the blood stages. Doxycycline has no activity against the relapsing forms (hypnozoites) of Plasmodium vivax. Doxycycline is indicated, in adults and children older than 10 years, as chemoprophylaxis for malaria caused by Plasmodium falciparum and, in combination with other antimalarial agents, against malaria caused by Plasmodium vivax. Doxycycline is only able to suppress malaria caused by P. vivax. As there are relatively few locations where P. vivax does not co-exist to some extent with P. falciparum, it is recommended that doxycycline should be used routinely with other agents, for example chloroquine. In acute intestinal amoebiasis MAYNE PHARMA Doxycycline Capsules may be a useful adjunct to amoebicides. In severe acne MAYNE PHARMA Doxycycline Capsules may be a useful adjunctive therapy.
Source: ARTG
Storage conditions
- Shelf lifetime is 24 Months
- Store below 25 degrees Celsius
Source: ARTG
How to use this medicine
Non-composite pack
This medicine contains one component only.
Component
- Capsule, modified release
- Oral
- Hard gelatin capsules, size 2, printed Doxy 100 in black and filled with yellow spheroidal pellets.
Source: ARTG
Images

Images © Medicines Information Pty Ltd.
Do I need a prescription?
These medicine packs are available from a pharmacist and requires a prescription. It is Schedule 4: Prescription Only Medicine.
- 21
- 7
Source: ARTG
Is this medicine subsidised?
This medicine is not listed on the Pharmaceutical Benefits Scheme (PBS). Talk to your pharmacist about how much it will cost.
Source: PBS
Pregnant or planning a pregnancy?
For the active ingredient: Doxycycline
You should seek advice from your doctor or pharmacist about taking this medicine. They can help you balance the risks and the benefits of this medicine during pregnancy.
Source: AHT
Reporting side effects
If you experience a side effect from this medicine, tell your doctor or pharmacist. Or report it directly to the TGA (Therapeutic Goods Administration).
You can report side effects to your doctor, or directly at Report an adverse event or safety problem (Opens in new tab)
Source: ARTG
Data sources
- Australian Health Thesaurus (AHT) (Opens in new tab) – Last updated on 3 August 2026
- Australian Medicines Terminology (AMT) (Opens in new tab) – Last updated on 3 August 2026
- Australian Register of Therapeutic Goods (ARTG) (Opens in new tab) – Last updated on 3 August 2026
- Pharmaceutical Benefits Scheme (PBS) (Opens in new tab) – Last updated on 3 August 2026
- Medicines Information Pty Ltd (Opens in new tab) – Last updated on 4 March 2026
Disclaimer
Healthdirect medicines information is not intended for use in an emergency. If you are suffering an acute illness, overdose, or emergency condition, call triple zero (000) and ask for an ambulance.
Reasonable care has been taken to provide accurate information at the time of creation. This information is not intended to substitute medical advice, diagnosis or treatment and should not be exclusively relied on to manage or diagnose a medical condition. Please refer to our terms and conditions (Opens in new tab).
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