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Monodox (Doxycycline) - Summary



Doxycycline is a broad-spectrum antibiotic synthetically derived from oxytetracycline. Monodox 100 mg, 75 mg, and 50 mg capsules contain doxycycline monohydrate equivalent to 100 mg, 75 mg, or 50 mg of doxycycline for oral administration.

To reduce the development of drug-resistant bacteria and maintain effectiveness of Monodox® and other antibacterial drugs, Monodox should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

Doxycycline is indicated for the treatment of the following infections:
Rocky mountain spotted fever, typhus fever and the typhus group, Q fever, rickettsialpox, and tick fevers caused by Rickettsiae.
Respiratory tract infections caused by Mycoplasma pneumoniae.
Lymphogranuloma venereum caused by Chlamydia trachomatis.
Psittacosis (ornithosis) caused by Chlamydia psittaci.
Trachoma caused by Chlamydia trachomatis, although the infectious agent is not always eliminated as judged by immunofluorescence.
Inclusion conjunctivitis caused by Chlamydia trachomatis.
Uncomplicated urethral, endocervical or rectal infections in adults caused by Chlamydia trachomatis.
Nongonococcal urethritis caused by Ureaplasma urealyticum.
Relapsing fever due to Borrelia recurrentis.

Doxycycline is also indicated for the treatment of infections caused by the following gram-negative microorganisms:
Chancroid caused by Haemophilus ducreyi.
Plague due to Yersinia pestis (formerly Pasteurella pestis).
Tularemia due to Francisella tularensis (formerly Pasteurella tularensis).
Cholera caused by Vibrio cholerae (formerly Vibrio comma).
Campylobacter fetus infections caused by Campylobacter fetus (formerly Vibrio fetus).
Brucellosis due to Brucella species (in conjunction with streptomycin).
Bartonellosis due to Bartonella bacilliformis.
Granuloma inguinale caused by Calymmatobacterium granulomatis.

Because many strains of the following groups of microorganisms have been shown to be resistant to doxycycline, culture and susceptibility testing are recommended.

Doxycycline is indicated for treatment of infections caused by the following gram-negative microorganisms, when bacteriologic testing indicates appropriate susceptibility to the drug:
Escherichia coli
Enterobacter aerogenes (formerly Aerobacter aerogenes)
Shigella species
Acinetobacter species (formerly Mima species and Herellea species)
Respiratory tract infections caused by Haemophilus influenzae.
Respiratory tract and urinary tract infections caused by Klebsiella species.

Doxycycline is indicated for treatment of infections caused by the following gram-positive microorganisms when bacteriologic testing indicates appropriate susceptibility to the drug:

Upper respiratory infections caused by Streptococcus pneumoniae (formerly Diplococcus pneumoniae).

Skin and skin structure infections caused by Staphylococcus aureus.

Anthrax due to Bacillus anthracis, including inhalational anthrax (post-exposure): to reduce the incidence or progression of disease following exposure to aerosolized Bacillus anthracis.

Doxycycline is not the drug of choice in the treatment of any type of staphylococcal infections.

When penicillin is contraindicated, doxycycline is an alternative drug in the treatment of the following infections:
Uncomplicated gonorrhea caused by Neisseria gonorrhoeae.
Syphilis caused by Treponema pallidum.
Yaws caused by Treponema pertenue.
Listeriosis due to Listeria monocytogenes.
Vincent’s infection caused by Fusobacterium fusiforme.
Actinomycosis caused by Actinomyces israelii.
Infections caused by Clostridium species.

In acute intestinal amebiasis, doxycycline may be a useful adjunct to amebicides.

In severe acne, doxycycline may be useful adjunctive therapy.

See all Monodox indications & dosage >>


Published Studies Related to Monodox (Doxycycline)

Effect of doxycycline vs placebo on retinal function and diabetic retinopathy progression in mild to moderate nonproliferative diabetic retinopathy: a randomized proof-of-concept clinical trial. [2014]
IMPORTANCE: Microglia have been associated with inflammatory changes underlying diabetic retinopathy. OBJECTIVE: To investigate whether low-dose oral doxycycline monohydrate, a drug capable of inhibiting microglial activation, can improve or slow the deterioration of retinal function and whether it can induce regression or slow progression of diabetic retinopathy in patients with mild to moderate nonproliferative diabetic retinopathy (NPDR)...

The effect of prolonged systemic doxycycline therapy on serum tissue degrading proteinases in coronary bypass patients: a randomized, double-masked, placebo-controlled clinical trial. [2014]
biomarkers during 4 months of doxycycline therapy in coronary bypass patients... CONCLUSIONS: Doxycycline decreases the systemic inflammatory burden in patients

Subantimicrobial-dose doxycycline treatment increases serum cholesterol efflux capacity from macrophages. [2013]
removal from macrophages... CONCLUSIONS: Our results suggest that SDD treatment may reduce the risk of

A study of the clinical activity of a gel combining monocaprin and doxycycline: a novel treatment for herpes labialis. [2012]
doxycycline in vivo against herpes labialis... CONCLUSION: Combining monocaprin with low-dose doxycycline offers an effective

Low-Dose Doxycycline Plus Additional Therapies may Lower Systemic Inflammation in Postmenopausal Women with Periodontitis. [2011.12]
ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: The effect of subantimicrobial-dose-doxycycline periodontal therapy on serum biomarkers of systemic inflammation: a randomized, double-masked, placebo-controlled clinical trial.

more studies >>

Clinical Trials Related to Monodox (Doxycycline)

Bioavailability Study of Doxycycline Monohydrate Capsules and Monodox Under Fasting and Fed Conditions [Completed]

Bioequivalence Study Doxycycline Tablets and Monodox Capsules Under Fasting Conditions [Completed]

Bioavailability Study of Doxycycline Monohydrate Capsules and Monodox Under Fasting Conditions [Completed]

NGU: Doxycycline (Plus or Minus Tinidazole) Versus Azithromycin (Plus or Minus Tinidazole) [Completed]
This study will look at the safety, effectiveness, and tolerability of combination medications for the initial treatment of non-gonococcal urethritis (NGU). NGU is inflammation of the tube that carries urine from the bladder. NGU is caused by bacteria that may be passed from person to person during sex. This study will compare the 2 currently recommended NGU treatments, doxycycline and azithromycin, taken with tinidazole (another medication to treat certain sexually transmitted infections). Tinidazole used with doxycycline or azithromycin may cure NGU better than when doxycycline or azithromycin is used alone. Study participants will be 300 men ages 16-45 years with NGU attending sexually transmitted disease clinics in Birmingham, AL; New Orleans, LA; Durham, NC; and Baltimore, MD. Study participation will last 7 weeks and involve 3 visits. At each visit, participants will provide a urine sample, have 2 urethral swabs, and have their urethra checked for discharge indicating infection.

Examination of the Anti-inflammatory and Insulin Sensitizing Properties of Doxycycline in Humans [Completed]
Obesity is a heightened state of inflammation in which production of cytokines and matrix metalloproteinases (MMPs) result in loss of function of insulin receptors and insulin resistance. Doxycycline (DOX) is a potent MMP inhibitor. We hypothesize that DOX will enhance insulin sensitivity and decreases inflammation in obese participants with type 2 diabetes (DM2).

more trials >>

Page last updated: 2015-08-10

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