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- What is doxycycline?
- What brand names are available for doxycycline?
- Is doxycycline available as a generic drug?
- Do I need a prescription for doxycycline?
- Why is doxycyclineprescribed to patients?
- What are the side effects of doxycycline?
- What is the dosage for doxycycline?
- Which drugs or supplements interact with doxycycline?
- Is doxycycline safe to use during pregnancy or while breastfeeding?
- What else should I know about doxycycline?
Why is doxycyclineprescribed to patients?
Doxycycline is used for many different types of infections, including respiratory tract infections due to Hemophilus influenzae, Streptococcus pneumoniae, or Mycoplasma pneumoniae. It also is used for the treatment of
What are the side effects of doxycycline?
Doxycycline is generally well-tolerated. The most common side effects are
Tetracyclines, such as doxycycline, may cause tooth discoloration if used in persons below 8 years of age. Exaggerated sunburn can occur with tetracyclines; therefore, sunlight should be minimized during treatment.
What is the dosage for doxycycline?
- The absorption of doxycycline is not markedly affected by food, and therefore, it can be taken with meals.
- For most infections, doxycycline is taken once or twice daily for 7 to 14 days.
- For adult infections, the usual dose of oral doxycycline is 200 mg on the first day of treatment (100 mg every 12 hours) followed by a dose of 100 to 200 mg/day as a single dose or divided and administered twice daily.
Which drugs or supplements interact with doxycycline?
- It is recommended that doxycycline not be taken at the same time as aluminum, magnesium, or calcium based antacids, such as Mylanta, Maalox, Tums, or Rolaids because, like food, these medications bind doxycycline in the intestine and prevent its absorption. Similarly, doxycycline should not be taken with minerals (such as calcium or iron) or with bismuth subsalicylate (Pepto Bismol).
- Doxycycline may enhance the activity of warfarin (Jantoven, Coumadin) and cause excessive "thinning" of the blood leading to exaggerated bleeding, necessitating a reduction in the dose of warfarin. Phenytoin (Dilantin), carbamazepine (Tegretol), and barbiturates (such as phenobarbital) may enhance the metabolism (destruction) of doxycycline thus making it less effective.
- Doxycycline may interfere with the action of penicillins and should not be combined with penicillins. It may also reduce the effect of oral contraceptives. Combining tetracycline and methoxyflurane (Penthrane) may reduce kidney function.
Infectious Disease Resources
Is doxycycline safe to use during pregnancy or while breastfeeding?
- Tetracycline antibiotics, such as doxycycline, can have toxic effects on development of bone in the fetus. Therefore, tetracyclines are not recommended during pregnancy unless there is no other appropriate antibiotic.
- Doxycycline is secreted into breast milk but the extent of absorption by the breastfed infant is not known. Since tetracyclines can cause toxic effects on bone, the use of tetracyclines in nursing mothers is of concern. The physician must decide whether to recommend that a nursing mother discontinue nursing during treatment with tetracyclines or change to a different antibiotic.
What else should I know about doxycycline?
What preparations of doxycycline are available?
- Capsules: 50, 75, 100 and 150 mg.
- Capsule (Delayed Release): 40 mg.
- Tablets: 20, 50, 75, 100 and 150 mg.
- Tablets (Delayed Release): 50, 60, 75, 80, 100, 120, 150, and 200 mg.
- Syrup: 50 mg/5 ml (teaspoon)
- Oral Suspension: 25 mg/5ml
- Powder for injection: 100and 200 mg.
- Periodontal Extended Release Liquid: 10%
How should I keep doxycycline stored?
- Tablets, capsules, and syrup should be kept at room temperature 15 C to 30 C (59 F to 86 F) in tight, light resistant containers.
- Powder for injection should be stored at or below 25 C (77 F) and protected from light.
- Atridox (doxycycline in a gel used for subgingival application) should be stored at 2 C to 8 C (36 F to 46 F).
How does doxycycline work?
- Doxycycline works by interrupting the production of proteins by bacteria. It is effective against a wide variety of bacteria, such as Hemophilus influenzae, Streptococcus pneumoniae, Mycoplasma pneumoniae, Chlamydia psittaci, Chlamydia trachomatis, Neisseria gonorrhoea, and many others.
When was doxycycline approved by the FDA?
The FDA approved doxycycline in December 1967.
Daily Health News
Doxycycline (Vibramycin, Oracea, Adoxa, Atridox, Acticlate, Acticlate Cap, Doryx, Doxteric, Doxy, Monodox, and others) is a synthetic broad-spectrum antibiotic derived from tetracycline. It is used to treat many different types of infections, including respiratory tract infections due to Hemophilus influenzae, Streptococcus pneumoniae, or Mycoplasma pneumoniae. It also is used for the treatment of
- nongonococcal urethritis (due to Ureaplasma),
- Rocky mountain spotted fever,
- syphilis, and
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