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Doryx

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Doryx

Indications
Dosage
How Supplied

INDICATIONS

To reduce the development of drug-resistant bacteria and maintain the effectiveness of DORYX and other antibacterial drugs, DORYX 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 a tetracycline-class antimicrobial indicated in the following conditions or diseases:

Rickettsial infections

Rocky Mountain spotted fever, typhus fever and the typhus group, Q fever, rickettsialpox, and tick fevers caused by Rickettsiae.

Sexually transmitted infections

Uncomplicated urethral, endocervical or rectal infections in adults caused by Chlamydia trachomatis.
Nongonococcal urethritis caused by Ureaplasma urealyticum.
Lymphogranuloma venereum caused by Chlamydia trachomatis.
Granuloma inguinale caused by Calymmatobacterium granulomatis.

Respiratory tract infections

Respiratory tract infections caused by Mycoplasma pneumoniae.
Psittacosis (ornithosis) caused by Chlamydia psittaci.
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 microorganisms, when bacteriological testing indicates appropriate susceptibility to the drug:
Respiratory tract infections caused by Haemophilus influenzae.
Respiratory tract infections caused by Klebsiella species.
Upper respiratory infections caused by Streptococcus pneumoniae.

Specific bacterial infections


Relapsing fever due to Borrelia recurrentis.
Plague due to Yersiniapestis.
Tularemia due to Francisella tularensis.
Cholera caused by Vibrio cholerae.
Campylobacter fetus infections caused by Campylobacter fetus.
Brucellosis due to Brucella species (in conjunction with streptomycin).
Bartonellosis due to Bartonella bacilliformis.
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 bacteriological testing indicates appropriate susceptibility to the drug:
Escherichia coli

Enterobacter aerogenes

Shigella
species
Acinetobacter
species
Urinary tract infections caused by Klebsiella species.

Ophthalmic infections

Trachoma caused by Chlamydia trachomatis, although the infectious agent is not always eliminated as judged by immunofluorescence.
Inclusion conjunctivitis caused by Chlamydia trachomatis.

Anthrax including inhalational anthrax (post-exposure)

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

Alternative treatment for selected infections when penicillin is contraindicated

When penicillin is contraindicated, doxycycline is an alternative drug in the treatment of the following infections:
Syphilis caused by Treponema pallidum.
Yaws caused by Treponema pertenue.
Vincent's infection caused by Fusobacterium fusiforme.
Actinomycosis caused by Actinomyces israelii.
Infections caused by Clostridium species.

Adjunctive therapy for acute intestinal amebiasis and severe acne

In acute intestinal amebiasis, doxycycline may be a useful adjunct to amebicides. In severe acne, doxycycline may be useful adjunctive therapy.

Prophylaxis of malaria

Doxycycline is indicated for the prophylaxis of malaria due to Plasmodium falciparum in short-term travelers ( <4 months) to areas with chloroquine and/or pyrimethamine-sulfadoxine resistant strains [see DOSAGE AND ADMINISTRATION and PATIENT INFORMATION].

DOSAGE AND ADMINISTRATION

Usual Dosage and Administration

THE USUAL DOSAGE AND FREQUENCY OF ADMINISTRATION OF DOXYCYCLINE DIFFERS FROM THAT OF THE OTHER TETRACYCLINES. EXCEEDING THE RECOMMENDED DOSAGE MAY RESULT IN AN INCREASED INCIDENCE OF SIDE EFFECTS.

Adults: The usual dose of oral doxycycline is 200 mg on the first day of treatment (administered 100 mg every 12 hours), followed by a maintenance dose of 100 mg daily. The maintenance dose may be administered as a single dose or as 50 mg every 12 hours. In the management of more severe infections (particularly chronic infections of the urinary tract), 100 mg every 12 hours is recommended.

For children above eight years of age: The recommended dosage schedule for children weighing 45 kg or less is 4.4 mg/kg of body weight divided into two doses on the first day of treatment, followed by 2.2 mg/kg of body weight given as a single daily dose or divided into two doses on subsequent days. For more severe infections up to 4.4 mg/kg of body weight may be used. For children over 45 kg, the usual adult dose should be used.

Administration of adequate amounts of fluid along with capsule and tablet forms of drugs in the tetracycline-class is recommended to wash down the drugs and reduce the risk of esophageal irritation and ulceration [see ADVERSE REACTIONS].

If gastric irritation occurs, doxycycline may be given with food or milk [see CLINICAL PHARMACOLOGY].

When used in streptococcal infections, therapy should be continued for 10 days.

Uncomplicated urethral, endocervical, or rectal infection in adults caused by Chlamydia trachomatis: 100 mg by mouth twice a day for 7 days.

Nongonococcal urethritis (NGU) caused by C. trachomatis and U. urealyticum: 100 mg by mouth twice a day for 7 days.

Syphilis - early: Patients who are allergic to penicillin should be treated with doxycycline 100 mg by mouth twice a day for 2 weeks.

Syphilis of more than one year's duration: Patients who are allergic to penicillin should be treated with doxycycline 100 mg by mouth twice a day for 4 weeks.

Acute epididymo-orchitis caused by C. trachomatis: 100 mg, by mouth, twice a day for at least 10 days.

For prophylaxis of malaria

For adults, the recommended dose is 100 mg daily. For children over 8 years of age, the recommended dose is 2 mg/kg given once daily up to the adult dose. Prophylaxis should begin 1 or 2 days before travel to the malarious area. Prophylaxis should be continued daily during travel in the malarious area and for 4 weeks after the traveler leaves the malarious area.

Inhalational anthrax (post-exposure)

ADULTS: 100 mg, of doxycycline, by mouth, twice a day for 60 days.

CHILDREN: weighing less than 45 kg, 2.2 mg/kg of body weight, by mouth, twice a day for 60 days. Children weighing 45 kg or more should receive the adult dose.

Sprinkling the tablet over applesauce

DORYX Tablets may also be administered by carefully breaking up the tablet and sprinkling the tablet contents (delayed-release pellets) on a spoonful of applesauce. The delayed-release pellets must not be crushed or damaged when breaking up the tablet. Any loss of pellets in the transfer would prevent using the dose. The applesauce/DORYX mixture should be swallowed immediately without chewing and may be followed by a glass of water if desired. The applesauce should not be hot, and it should be soft enough to be swallowed without chewing. In the event that a prepared dose of applesauce/DORYX Tablet cannot be taken immediately, the mixture should be discarded and not stored for later use.

HOW SUPPLIED

Dosage Forms and Strengths

DORYX (Doxycycline Hyclate Delayed-Release Tablets, USP), 75 mg are white, oval scored tablets containing yellow pellets and debossed with "D|7" on one face and plain on the other. Each tablet contains specially coated pellets of doxycycline hyclate equivalent to 75 mg of doxycycline.

DORYX (Doxycycline Hyclate Delayed-Release Tablets, USP), 100 mg are white, oval scored tablets containing yellow pellets and debossed with "D|l" on one face and plain on the other. Each tablet contains specially coated pellets of doxycycline hyclate equivalent to 100 mg of doxycycline.

DORYX (Doxycycline Hyclate Delayed-Release Tablets, USP), 150 mg are white, rectangular dual-scored tablets containing yellow pellets and debossed with "D|D|D" on one face and dual-scored on the other. Each tablet contains specially coated pellets of doxycycline hyclate equivalent to 150 mg of doxycycline.

DORYX® (Doxycycline Hyclate Delayed-Release Tablets, USP), 75 mg are white, oval scored tablets containing yellow pellets and debossed with "D|7" on one face and plain on the other. Each tablet contains specially coated pellets of doxycycline hyclate equivalent to 75 mg of doxycycline.

Bottles of 60 tablets: N 0430-0111-20

DORYX® (Doxycycline Hyclate Delayed-Release Tablets, USP), 100 mg are white, oval scored tablets containing yellow pellets and debossed with "D|l" on one face and plain on the other. Each tablet contains specially coated pellets of doxycycline hyclate equivalent to 100 mg of doxycycline.

Bottles of 100 tablets: N 0430-0112-24

DORYX® (Doxycycline Hyclate Delayed-Release Tablets, USP), 150 mg are white, rectangular dual-scored tablets containing yellow pellets and debossed with "D|D|D" on one face and dual-scored on the other. Each tablet contains specially coated pellets of doxycycline hyclate equivalent to 150 mg of doxycycline.

Bottles of 60 tablets: N 0430-0115-20

Store at 25° C (77° F); excursions permitted to 15° to 30° C (59° to 86° F) [see USP Controlled Room Temperature]; dispense in a tight, light-resistant container (USP).

Manufactured by: Mayne Pharma International Pty Ltd, 1538 Main North Road, Salisbury South, South Australia 5106, for Warner Chilcott Company, LLC Fajardo, Puerto Rico 00738. Marketed by: Warner Chilcott (US), LLC Rockaway, NJ 07866. 1-800-521-8813. Revised: 09/2011

Last reviewed on RxList: 4/17/2012
This monograph has been modified to include the generic and brand name in many instances.

Indications
Dosage
How Supplied
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