How much & for how long should I take Doxycycline Hyclate for a UTI?

Can doxicucline be taken with another antibiotic?

Doxycycline can be used to treat infections caused by bacteria, including a urinary tract infection (UTI). Doxycycline is part of a class of drugs called tetracyclines; it works by decreasing bacteria's ability to make protein, which bacteria need to live. This activity does not directly kill the bacteria, but it does inhibit their growth and multiplication, which gives the immune system a chance to fight the infection.

The recommended doxycycline dosage for most types of bacterial infections in adults is 100 mg to 200 mg per day for 7 to 14 days. In children ages 8 years old or older, your healthcare provider will prescribe a doxycycline dosage based on a weight chart, usually about 1 to 2 mg per pound of body weight per day. The dose is divided and taken for 7 to 14 days.

However please talk/check with your pharmacist/doc. who is qualified & knows your medical history, hope this helps?