What is doxycycline?
Doxycycline is a tetracycline antibiotic. It fights bacteria in the body.
Doxycycline is used to treat many different bacterial infections, such as acne, urinary tract infections, intestinal infections, eye infections, gonorrhea, chlamydia, periodontitis (gum disease), and others.
Doxycycline is also used to treat blemishes, bumps, and acne-like lesions caused by rosacea. It will not treat facial redness caused by rosacea.
Some forms of doxycycline are used to prevent malaria, to treat anthrax, or to treat infections caused by mites, ticks, or lice.
Doxycycline may also be used for purposes not listed in this medication guide.
—-What Is Doxycycline (Oracea, Doryx)?—-
Doxycycline is an antibiotic used for treating bacterial infections.
The drug is also sold under the brand names Oracea, Doryx, Monodox, Periostat, and Vibramycin.
Doxycycline is in a class of medications called tetracyclines, and it’s a broad-spectrum antibiotic, which means it works against a wide range of bacteria.
Doctors prescribe doxycycline to prevent malaria and treat a wide range of infections, including:
- Pneumonia and other respiratory tract infections
- Lyme disease
- Skin infections
- Infections involving the genitals and urinary tract infections (UTI)
- Anthrax (after inhalational exposure)
Doxycycline works by preventing the growth and spread of bacteria.
Like all antibiotics, doxycycline will not treat colds, the flu, or other infections caused by viruses or fungi.
A 2014 study found that a low dose of 40 milligrams (mg) of slow-release doxycycline daily could be an effective and safe therapy for ocular rosacea, or rosacea that affects the eyes.
The drug company Pfizer developed doxycycline in the early 1960s, and the Food and Drug Administration (FDA) approved the drug in 1967 under the brand name Vibramycin.
In 1994 the FDA also approved the drug to prevent malaria.
—-How it works—–
Doxycycline is an antibiotic used to treat a wide range of infections. It belongs to a group of medicines known as tetracyclines.
Doxycycline belongs to a class of drugs called tetracyclines. A class of drugs is a group of medications that work in a similar way. These drugs are often used to treat similar conditions.
This drug works by blocking a bacterial protein from being made. It does this by binding to certain units of the protein. This stops the protein from growing and treats your infection.
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.
Some products that may interact with this drug include: retinoid medications taken by mouth (such as acitretin, isotretinoin), barbiturates (such as phenobarbital), “blood thinners” (such as warfarin), digoxin, anti-seizure medications (such as carbamazepine, phenytoin), strontium, live bacterial vaccines.
You should check with your doctor immediately if any of these side effects occur when taking doxycycline:
Incidence not known:
- abdominal or stomach tenderness
- black, tarry stools
- clay-colored stools
- dark urine
- decreased appetite
- diarrhea, watery and severe, which may also be bloody
- difficulty with swallowing
- fast heartbeat
- feeling of discomfort
- hives, itching, puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
- hives or welts, itching, or rash
- increased thirst
- inflammation of the joints
- joint or muscle pain
- large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
- loss of appetite
- nausea and vomiting
- numbness or tingling of the face, hands, or feet
- redness and soreness of the eyes
- redness of the skin
- severe stomach pain
- sore throat
- sores in the mouth
- stomach cramps
- stomach pain or tenderness
- swelling of the feet or lower legs
- swollen lymph glands
- tightness in the chest
- unusual tiredness or weakness
- unusual weight loss
- yellow eyes or skin
—-Minor Side Effects—-
Some of the side effects that can occur with doxycycline may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:
—Incidence not known:—
- Back, leg, or stomach pains
- bleeding gums
- blood in the urine or stools
- blurred vision
- bulging soft spot on the head of an infant
- change in the ability to see colors, especially blue or yellow
- chest pain, discomfort, or burning
- cracks in the skin
- decrease in vision
- difficulty breathing
- discoloration of the thyroid glands
- double vision
- general body swelling
- increased sensitivity of the skin to sunlight
- loss of heat from the body
- lower back or side pain
- pain or burning in the throat
- pain with swallowing
- painful or difficult urination
- pale skin
- pinpoint red spots on the skin
- rash with flat lesions or small raised lesions on the skin
- red, swollen skin
- redness or other discoloration of the skin
- redness, swelling, or soreness of the tongue
- scaly skin
- severe nausea
- severe sunburn
- sores, ulcers, or white spots on the lips or tongue or inside the mouth
- unusual bleeding or bruising
- vomiting blood
have liver disease or are taking medicines which affect your liver
have porphyria (a genetic disorder of the blood)
suffer from myasthenia gravis, a condition characterised by muscle weakness, difficulty chewing and swallowing and slurred speech
are sensitive to sunlight
have systemic lupus erythematosus (SLE) a condition characterised by a rash (especially on the face), hair loss, fever, malaise and joint pain.
Before taking doxycycline, tell your doctor or pharmacist if you are allergic to it; or to other tetracyclines (such as minocycline); or if you have any other allergies. This product may contain inactive ingredients (such as sulfites, soy found in some brands), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: trouble swallowing, esophagus problems (such as hiatal hernia or reflux/heartburn).
Before having surgery, tell your doctor or dentist that you are taking
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