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Doxycycline - what is the dosage you should take for a urinary tract infection?

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Marvell 20 Aug 2009

For bacterial (which would include a urinary tract infection) or protozoal infections:

Dose for doxycycline is

Adults and children older than 8 years of age who weigh more than 45 kilograms (kg) (99 pounds)—100 milligrams (mg) every twelve hours the first day, then 100 mg once a day or 50 to 100 mg every twelve hours.

Children older than 8 years of age who weigh 45 kg (99 pounds) or less—Dose is based on body weight. The usual dose is 2.2 mg per kg (1 mg per pound) of body weight two times a day on the first day, then 2.2 to 4.4 mg per kg (1 to 2 mg per pound) of body weight once a day or 1.1 to 2.2 mg per kg (0.5 to 1 mg per pound) of body weight twice a day.

Infants and children 8 years of age and younger—Tetracyclines are usually not used in young children because tetracyclines can permanently stain teeth.

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