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- Like all antibiotics, doxycycline is not commonly used for long durations. The most serious adverse event of long-term treatment is the growth of antibiotic-resistant bacteria or the overgrowth of C. difficile in the colon. Both are serious and even life-threatening risks, so long-term treatment is generally avoided.
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Nov 18, 2023 · The long-term use of tetracyclines has been associated with microscopic brown-black discoloration of the thyroid gland; abnormal thyroid function has not been reported. [ Ref ] Rare (0.01% to 0.1%): Microscopic brown-black discoloration of the thyroid gland [ Ref ]
redness, swelling, or soreness of the tongue. scaly skin. severe nausea. severe stomach pain. vomiting blood. Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. Call your doctor for medical advice about side effects.
Oct 26, 2022 · Sore throat or throat irritation. Cough. Stuffy sinuses. Muscle pain. Back pain. Stomach cramps. Anxiety. Nasal congestion. Vomiting. Headache. Yeast infection. Inflammation of the lining of the heart. Dry mouth. Sensitivity to sunlight. Skin discoloration. Tooth discoloration. Loss of appetite. Kidney dysfunction.
Oct 17, 2023 · 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 began using doxycycline. Doxycycline may cause serious side effects. Call your doctor at once if you have:
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Mar 1, 2017 · Adults and children weighing 45 kilograms (kg) or more—100 milligrams (mg) every 12 hours on the first day, then 100 mg once a day or 50 to 100 mg every 12 hours. Children weighing less than 45 kg with severe or life threatening infections (eg, anthrax, Rocky Mountain spotted fever)—Dose is based on body weight and must be determined by ...
Children up to 8 years of age—Use is not recommended. For anthrax after possible exposure: Adults and children weighing 45 kilograms (kg) or more—100 milligrams (mg) 2 times a day (every 12 hours) for 60 days. Children weighing less than 45 kg—Dose is based on body weight and must be determined by your doctor.
Stomach upset, diarrhea, nausea, or vomiting may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Remember that this medication has been prescribed...