Antibiotics for Lyme Disease
How It Works
These drugs kill Borrelia burgdorferi bacteria, which cause Lyme disease.
Why It Is Used
Antibiotics are used to cure early Lyme disease and to greatly reduce the risk of future complications. Antibiotics may also be used in the later stages of Lyme disease, when additional symptoms involving the skin, joints, nervous system, or heart may develop.
The type of antibiotic prescribed depends on your age, symptoms, any antibiotic allergies you may have, and the stage of Lyme disease. These medicines may be taken orally, as an injection, or through a vein (intravenous, or IV). The length of antibiotic treatment varies according to how bad the disease and your symptoms are, but treatment generally lasts less than 4 weeks.
Early Lyme disease
Later stages of Lyme disease
Pregnant or nursing women
How Well It Works
Early treatment with antibiotics can cure the Lyme disease infection and help prevent future problems with arthritis, the heart, or the nervous system.1 But symptoms may not go away right away. Some symptoms may last for several weeks after treatment. This does not mean that the antibiotics were not successful, nor does it mean that you need additional antibiotic treatment.
Antibiotic treatment for early symptoms of chronic Lyme arthritis is usually very effective. Joints that have been badly damaged by Lyme arthritis may take a long time to get better after the infection has been cured, or they may not respond to treatment at all. A small percentage of people in the United States continue to have symptoms of chronic Lyme arthritis after treatment with antibiotics.2
Heart symptoms often begin to go away before antibiotics are given. If not, they usually respond to antibiotic therapy within days. Mild heart symptoms that may occur with early Lyme disease usually improve after treatment with oral amoxicillin or doxycycline for 21 to 30 days.
Symptoms of inflammation of the membrane surrounding the brain and spinal cord (Lyme meningitis) begin to improve by the second day of therapy and usually disappear after 7 to 10 days.
All medicines have side effects. But many people don't feel the side effects, or they are able to deal with them. Ask your pharmacist about the side effects of each medicine you take. Side effects are also listed in the information that comes with your medicine.
Here are some important things to think about:
Call your doctor if you:
Common side effects of these medicines include:
Some people treated for early Lyme disease have headaches, muscle and joint pain, and tiredness that may continue for a while after treatment. These symptoms usually go away on their own within 6 months and do not require more treatment.
One large study suggests that people who take erythromycin along with certain common medicines may raise their risk of sudden cardiac death.3 The study showed that the risk of dying from a heart problem is greater when erythromycin is taken with some medicines—such as certain calcium channel blockers, certain antifungal medicines, and some antidepressants—than when these medicines are not taken together.
See Drug Reference for a full list of side effects. (Drug Reference is not available in all systems.)
What To Think About
Doxycycline should be taken with plenty of fluids and not while you are lying down or right before bedtime.
Doxycycline is the drug of choice for treating early Lyme disease in people ages 8 and older. But it should not be given to pregnant women or to people who are allergic to tetracycline.
If you get intravenous (IV) antibiotics, you may have weekly blood tests to check your white blood cell count. The IV antibiotic treatment may lead to low levels of white blood cells (called leukopenia) that can make it hard for you to fight infection.
With the exception of pregnant women and people with severe arthritis or heart problems, most people who have been exposed to ticks but do not have symptoms are not given antibiotics. Even in parts of the country where Lyme disease is known to occur often, the risk of getting Lyme disease is too small to warrant treatment before symptoms appear.
Medicine is one of the many tools your doctor has to treat a health problem. Taking medicine as your doctor suggests will improve your health and may prevent future problems. If you don't take your medicines properly, you may be putting your health (and perhaps your life) at risk.
There are many reasons why people have trouble taking their medicine. But in most cases, there is something you can do. For suggestions on how to work around common problems, see the topic Taking Medicines as Prescribed.
Advice for women
If you are pregnant, breast-feeding, or planning to get pregnant, do not use any medicines unless your doctor tells you to. Some medicines can harm your baby. This includes prescription and over-the-counter medicines, vitamins, herbs, and supplements. And make sure that all your doctors know that you are pregnant, breast-feeding, or planning to get pregnant.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.
eMedicineHealth Medical Reference from Healthwise
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