As a result, more of a drug stays in your body for a longer time. This raises your risk of side effects. For children: This drug may cause tooth discoloration at the time teeth are developing.
This drug should not be used in children who are 8 years of age or younger unless the potential benefit outweighs the risk. In these children, its use is recommended for the treatment of severe or life-threatening conditions such as anthrax or Rocky Mountain spotted fever, and when no other treatments are available or have been shown to work.
This dosage information is for doxycycline oral tablet. All possible dosages and drug forms may not be included here. Your dosage, drug form, and how often you take the drug will depend on:. The dosage information below is for the conditions that this drug is most often prescribed to treat. This list may not contain all conditions that your doctor can prescribe this drug for. If you have questions about your prescription, talk with your doctor.
It has not been confirmed that this drug is safe and effective for use in people who are younger than 8 years. Your doctor may start you on a lowered dosage or a different schedule. This can help keep levels of this drug from building up too much in your body. It has not been confirmed that this drug is safe and effective for use in children younger than 8 years.
Doxycycline oral tablet is used for short-term treatment. This may be fatal. You may feel better before you finish your course of treatment, but you should keep taking your medication as directed.
Skipping doses or failing to complete the full course of treatment may reduce how well your treatment works. It may also cause antibiotic resistance.
If you take too much: You could have dangerous levels of the drug in your body and experience more side effects. If your symptoms are severe, call or go to the nearest emergency room right away. What to do if you miss a dose: Take your dose as soon as you remember. If you remember just a few hours before your next scheduled dose, take only one dose. Never try to catch up by taking two doses at once. Doing so could result in dangerous side effects. How to tell if the drug is working: Your symptoms may start to improve and you may feel better.
This drug can make your skin more sensitive to the sun and increase your risk of sunburn. Avoid the sun if you can. Many insurance companies require a prior authorization for this drug. This means your doctor may need to get approval from your insurance company before your insurance company will pay for the prescription. There are other drugs available to treat your condition.
Some may be better suited for you than others. Talk to your doctor about other drug options that may work for you. Disclaimer: Medical News Today has made every effort to make certain that all information is factually correct, comprehensive, and up-to-date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional.
You should always consult your doctor or other healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses. Infection refers to an invasion of the body by harmful microorganisms or parasites.
Use only the brand of this medicine that your doctor prescribed. Different brands may not work the same way. To help clear up your infection completely, keep taking this medicine for the full time of treatment, even if you begin to feel better after a few days. If you stop taking this medicine too soon, your symptoms may return. The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine.
If your dose is different, do not change it unless your doctor tells you to do so. The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule.
Do not double doses. Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing. If your symptoms do not improve within a few days, or if they become worse, check with your doctor. Using this medicine while you are pregnant can harm your unborn baby.
Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using this medicine, tell your doctor right away. This medicine may darken the color of your skin, nails, eyes, teeth, gums, or scars. Talk with your doctor if you have any concerns. Doxycycline may cause diarrhea, and in some cases it can be severe.
It may occur 2 months or more after you stop taking this medicine. Do not take any medicine to treat diarrhea without first checking with your doctor. Diarrhea medicines may make the diarrhea worse or make it last longer. If you have any questions about this or if mild diarrhea continues or gets worse, check with your doctor. Birth control pills containing estrogen may not work properly while you are using doxycycline. To keep from getting pregnant, use other forms of birth control.
These include condoms, a diaphragm, or a contraceptive foam or jelly. Doxycycline may cause your skin to be more sensitive to sunlight than it is normally. Exposure to sunlight, even for short periods of time, may cause skin rash, itching, redness or other discoloration of the skin, or a severe sunburn.
When you begin taking this medicine:. Serious skin reactions, including drug reaction with eosinophilia and systemic symptoms can occur with this medicine. Check with your doctor right away if you have blistering, peeling, or loosening of the skin, red skin lesions, severe acne or a skin rash, sores or ulcers on the skin, fever or chills, cough, sore throat, swollen, painful, or tender lymph glands in the neck, armpit, or groin, or yellow skin or eyes while using this medicine.
This medicine may cause increased pressure inside the head intracranial hypertension. This is more likely to occur in women of childbearing age who are overweight or have a history of intracranial hypertension. Tell your doctor right away if you have a headache, blurred vision, or changes in vision. It may also provide additional protection from common bacterial causes of diarrhoea.
To be effective in preventing infection, it needs to be taken once a day during the time the person is at risk. This included, most notably, anthrax. So it could be used as prophylaxis in military or other populations thought to be at risk of bio-warfare or following release of anthrax into the environment by terrorists. The development of doxycycline followed the momentous discovery of penicillin , a natural compound produced by a certain type of mould.
This unearthed natural compounds with anti-microbial activity and further synthetic modification improved these natural compounds. Like all antibiotics, doxycycline is susceptible to bugs that develop resistance.
There is evidence this has already occurred in settings where the drug is widely used, such as treatment of acne. This means its use may be curtailed or overtaken by alternative drugs for some conditions, now or in the future.
The most commonly reported side effect is inflammation of the oesophagus food pipe , causing heartburn.
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