Common Brand Names: Adoxa, Doryx, Monodox, Oracea, Periostat, Vibramycin
Medically reviewed by Jessica Swirble, PharmD
Last updated on March 31, 2025
Drug Information | Side Effects | Use & Dosage | Request an Online Prescription
Doxycycline is a type of antibiotic from the tetracycline class, commonly prescribed to treat various bacterial infections. It works by inhibiting the growth and spread of bacteria in the body.
Doxycycline is used to treat conditions such as:
It may also be prescribed for other bacterial infections as determined by your healthcare provider.
Doxycycline works by interfering with bacteria's ability to produce essential proteins, preventing their growth and replication.
Doxycycline is usually taken orally, with or without food, as directed by your healthcare provider. Doxycycline is usually taken once or twice a day. Take doxycycline with a full glass of water.
Follow the prescribed dosage and schedule strictly. Do not take more than the recommended dose or use it for longer than prescribed.
Consult your healthcare provider for specific instructions on how to take doxycycline properly.
The time it takes to feel better while taking doxycycline can vary depending on the type and severity of the infection. Some people may notice improvement within a few days, while others may require a longer course of treatment. It's crucial to complete the full course of antibiotics as prescribed, even if you start feeling better earlier.
While doxycycline is primarily used for bacterial infections, healthcare providers may sometimes prescribe it off-label for other conditions, such as:
Discuss any alternative uses of doxycycline with your healthcare provider.
Doxycycline is available in the following dosage forms:
Generic versions of doxycycline are available under various brand names.
Doxycycline is a prescription medication. You will need a valid prescription from a licensed healthcare provider to obtain this antibiotic.
The use of doxycycline can lead to various side effects in some individuals. These side effects can range from mild to severe and may require medical attention depending on their severity.
Common mild side effects of doxycycline use include:
More severe side effects of doxycycline use can include:
If you experience any severe side effects while taking doxycycline, seek immediate medical attention.
Tell your healthcare provider about any existing medical conditions, allergies, or other medications you are taking before starting treatment with doxycycline. This includes prescription drugs, over-the-counter medications, and dietary supplements, as they may interact with this drug.
Tell your provider if you are taking these medications or supplements:
You should also mention medical conditions such as:
If you are pregnant, planning to become pregnant, or breastfeeding, consult your healthcare provider before using doxycycline to assess potential risks and benefits.
Take doxycycline with a full glass of water to prevent irritation of the esophagus.
Avoid lying down for at least 30 minutes after taking the medication to prevent throat irritation and ensure proper absorption.
Do not take doxycycline with dairy products, calcium supplements, antacids, zinc, or iron supplements, as they can interfere with its absorption.
Limit exposure to sunlight and ultraviolet (UV) light while taking doxycycline, as it can increase the risk of sunburn.
Use effective contraception methods while taking doxycycline, as it may reduce the effectiveness of hormonal birth control pills.
In case of a doxycycline overdose, symptoms may include severe nausea, vomiting, diarrhea, and dizziness. If you experience any of these symptoms, call the poison control helpline at 1-800-222-1222. If an individual has collapsed, is having seizures, or is unresponsive, call 9-1-1 immediately.
Doxycycline is available in various strengths, including:
The typical starting dose of doxycycline for bacterial infections can vary depending on factors such as the type of infection, its severity, your age, and other medical conditions. It's crucial to follow your healthcare provider's instructions regarding dosage and administration carefully.
For most adults and children 8 years and older with bacterial infections, the typical starting dose of doxycycline may be:
For pediatric patients younger than 8 years old, the dose may be adjusted based on weight and the specific infection being treated. The oral suspension is often used for pediatric dosing.
Doxycycline should be taken with a full glass of water to avoid irritation of the esophagus and to ensure proper absorption. It's generally recommended to take it on an empty stomach, at least 1 hour before or 2 hours after meals unless otherwise instructed by your healthcare provider.
Your healthcare provider will determine the duration of treatment based on the type of infection and your response to the medication. It's important to complete the full course of treatment as prescribed, even if your symptoms improve before the medication is finished.
If you have any questions about your dosage or how to take doxycycline, contact your healthcare provider or pharmacist. If you want to talk to a provider right away, consider booking an online doctor appointment on Sesame to discuss your concerns.
If you miss a dose of doxycycline, take it as soon as you remember. If it's close to the time for your next dose, skip the missed dose and continue with your regular dosing schedule. Avoid taking a double dose of doxycycline to make up for a missed one.
Continue taking doxycycline as prescribed by your healthcare provider, even if you start feeling better. Abruptly stopping doxycycline can lead to rebound symptoms or complications. Follow your provider's instructions regarding the duration of treatment.
Store doxycycline according to the instructions provided by your healthcare provider or pharmacist. It should be kept at room temperature, away from excessive heat, light, and moisture. Ensure the container is tightly closed and keep the medication out of the reach of children.