Doxycycline 100mg

Indications and Dosage

Take this antibiotic exactly as prescribed by your doctor. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.

Take tablets or capsules with a full glass of water. Drink plenty of liquids while you are taking this medicine.

This medicine may be taken with food or milk if they upset your stomach.

You may open a regular capsule or break up a regular tablet and sprinkle the medicine into a spoonful of applesauce to make swallowing easier. Swallow right away without chewing. Do not save the mixture for later use. Drink a full glass (8 ounces) of cool water right away to avoid the risk of esophageal irritation.

You may need to split a regular doxycycline tablet to get the correct dose. Follow your doctor's instructions.

Use this medicine for the full prescribed length of time. Your symptoms may improve before the infection is completely cleared. Skipping doses may also increase your risk of further infection that is resistant to antibiotics. Doxycycline will not treat viral infections such as the flu or a common cold.

If you need surgery, tell the surgeon ahead of time that you are using this antibiotic.

Store at room temperature away from moisture, heat, and light.

Throw away any unused medicine after the expiration date on the label has passed. Using expired doxycycline can cause damage to your kidneys.

Warnings and Side Effects

You should not take this medicine if you are allergic to any tetracycline antibiotic.

Children younger than 8 years old should use this medicine only in cases of severe or life-threatening conditions. This medicine can cause permanent yellowing or graying of the teeth in children.

Using this medicine during pregnancy could harm the unborn baby or cause permanent tooth discoloration later in the baby's life.

You should not take this medicine if you are allergic to doxycycline or other tetracycline antibiotics such as demeclocycline, minocycline, tetracycline, or tigecycline.

To make sure this medicine is safe for you, tell your doctor if you have ever had:

• liver disease;

• kidney disease;

• asthma or sulfite allergy;

• increased pressure inside your skull; or

• if you also take isotretinoin, seizure medicine, or a blood thinner such as warfarin (Coumadin).

If you are using this medicine to treat chlamydia, your doctor may test you to make sure you do not also have gonorrhea, another sexually transmitted disease.

Taking this medicine during pregnancy may affect tooth and bone development in the unborn baby. Taking this antibiotic during the last half of pregnancy can cause permanent tooth discoloration later in the baby's life. Tell your doctor if you are pregnant or if you become pregnant while using this medicine.

This antibiotic can make birth control pills less effective. Ask your doctor about using a non-hormonal birth control (condom, diaphragm with spermicide) to prevent pregnancy.

This medicine can pass into breast milk and may affect bone and tooth development in a nursing infant. The extent of absorption is unknown. Do not breastfeed while you are taking this medicine.

Children should not use this medicine. Doxycycline can cause permanent yellowing or graying of teeth in children younger than 8 years old.

Children should use this antibiotic only in cases of severe or life-threatening conditions such as anthrax, or Rocky Mountain spotted fever. The benefit of treating a serious condition may outweigh any risks to the child's tooth development.

Common doxycycline side effects

The most common doxycycline side effects include nausea and vomiting, upset stomach, loss of appetite, mild diarrhea, skin rash or itching, darkened skin color, and vaginal itching or discharge.

Serious doxycycline side effects

Get emergency medical help if you have any signs of an allergic reaction to doxycycline (symptoms include hives, difficulty breathing, and swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning in your eyes, skin pain, red or purple skin rash that spreads and causes blistering and peeling).

Seek medical treatment if you have a serious drug reaction that can affect many parts of your body. Symptoms may include skin rash, fever, swollen glands, flu-like symptoms, muscle aches, severe weakness, unusual bruising, or yellowing of your skin or eyes. This reaction may occur several weeks after you begin using this medicine.

Other serious doxycycline side effects may occur. Call your doctor at once if you have:

• severe stomach pain, diarrhea that is watery or bloody;

• throat irritation, trouble swallowing;

• chest pain, irregular heart rhythm, feeling short of breath;

• little or no urination;

• low white blood cell counts - fever, chills, swollen glands, body aches, weakness, pale skin, easy bruising or bleeding;

• severe headaches, ringing in your ears, dizziness, nausea, vision problems, pain behind your eyes;

• loss of appetite, upper stomach pain (that may spread to your back), tiredness, nausea or vomiting, fast heart rate, dark urine, jaundice (yellowing of the skin or eyes).

This is not a complete list of side effects, and others may occur. Call your doctor for medical advice about side effects.