Doxycycline Tables:

Pharmacokinetics

Bioavailability Peak plasma level Plasma half-life Active metabolites Elimination
variable* 95% 2 to 3 hours 14 to 24 hours none partially renal
Good penetration of the various tissues and body fluids.
*Absorption is only marginally reduced (by a maximum of 20%) by milk or food.

Dose
Indication Administration
Initial loading dose
Dose Interval
Maintenance dose
Dose* Interval
acne oral 25-50 mg 24 hours 25-50 mg 24 hours
chlamydia infections oral 100-200 mg 24 hours 100-200 mg 24 hours
*The duration of treatment depends on the diagnosis; for most infections doxycycline can be dosed as in the above examples for chlamydia infections.

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