Doxycycline FAQ


What is Doxycycline used for?

Doxycycline is used to treat bacterial infections such as acne, urinary tract infections, intestinal infections, eye infections, gonorrhea, chlamydia, periodontitis (gum disease), and others.

How should I take Doxycycline?

Follow the directions on your prescription label. Do not take larger or smaller amounts or for longer than recommended.

What should I avoid while taking Doxycycline?

Do not take iron supplements, multivitamins, calcium supplements, antacids, or laxatives within 2 hours before or after taking Doxycycline.

What are the side effects of Doxycycline?

Common side effects may include nausea, vomiting, upset stomach, diarrhea, skin rash, or itching.

Can I drink alcohol while taking Doxycycline?

It is best to avoid alcohol while taking Doxycycline, as it may reduce the effectiveness of the medication.

Is Doxycycline safe for children?

Doxycycline is generally safe for children over the age of 8 years, but it should not be used in children under 8 except in certain situations.

How long does it take for Doxycycline to work?

You may need to take Doxycycline for a few days or weeks before your condition improves. Follow your doctor's instructions.

Can I buy Doxycycline without a prescription?

No, Doxycycline is a prescription medication and is not available over the counter.

What should I do if I miss a dose of Doxycycline?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose.

Is it safe to take Doxycycline during pregnancy?

Doxycycline can harm an unborn baby or cause permanent tooth discoloration in the child's later life. Avoid using Doxycycline during pregnancy.

Can Doxycycline be used to treat a cold or flu?

Doxycycline is not effective in treating viral infections such as the common cold or flu.

What is the usual dosage for Doxycycline?

The typical dosage of Doxycycline for adults is 200 mg on the first day of treatment (100 mg every 12 hours), followed by a maintenance dose of 100 mg daily.

How long should I take Doxycycline for acne?

The usual dose of Doxycycline for treating acne is 50 to 100 mg twice daily or 100 to 200 mg once daily.

Can I take Doxycycline with food?

You can take Doxycycline with or without food, but it may help to reduce stomach upset if taken with food.

Can Doxycycline cause sun sensitivity?

Doxycycline can make your skin more sensitive to the sun. Avoid prolonged sun exposure, tanning booths, and sunlamps while taking this medication.

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Information provided by Dr. Nithya Priya Raju. Reviewed by Dr. Mohamed El Khouly