How good is Doxycycline for strep throat?

Doxycycline for strep throat
Medically reviewed by Dr. Mavra Farrukh


Doxycycline effectively stops the growth of bacteria by inhibiting bacterial protein synthesis. It is commonly used to treat various bacterial infections, including strep throat. Doxycycline is often an effective alternative for individuals with penicillin allergies or intolerances. You should take care when considering Doxycycline during pregnancy or lactation, as it may pose risks to the developing fetus or nursing infant. 

Self-medication with Doxycycline is strongly discouraged, and you should always seek medical guidance for proper diagnosis and treatment recommendations. This blog covers how good Doxycycline is for strep throat.

Can you take Doxycycline for strep throat?

Yes, you can. Strep throat typically presents symptoms such as a severe sore throat, difficulty swallowing, fever, swollen lymph nodes in the neck, and swollen tonsils with white patches or streaks of pus.

Doxycycline works by inhibiting the growth and spread of these bacteria. To do this, it blocks the production of proteins that the bacteria need to survive. The infection is controlled by stopping the bacteria from multiplying, and your immune system can fight off the remaining bacteria.

Clinical studies and real-world experiences have demonstrated the antibiotic’s efficacy in swiftly eradicating the infection, providing quick relief from symptoms such as throat pain, fever, and difficulty swallowing.

If you have strep throat or are experiencing symptoms of a sore throat, get a quick online consultation now

How quickly does Doxycycline work for strep throat?

The duration until Doxycycline begins to exert its effects might differ based on variables like the intensity of the infection, the body’s reaction to the infection, and the particular bacteria responsible for the infection.

Many individuals report improving their symptoms after just a few days of taking Doxycycline for strep throat. Symptoms such as sore throat, fever, and difficulty swallowing may improve within 24 to 48 hours after starting the medication.

How much Doxycycline do I take for strep throat?

A healthcare provider should always determine the dosage of Doxycycline for treating strep throat. Self-medication without medical guidance is not recommended.

Oral Doxycycline 200 mg once daily every 12 hours is the standard dosage for adults treated with strep throat. This is followed by a maintenance dose of 100 mg orally once a day or 50 mg orally every 12 hours for 7 to 10 days.

How safe is Doxycycline for strep throat?

Here are some key points regarding the safety of Doxycycline for strep throat:

  • Side Effects: Common side effects of Doxycycline may include nausea, diarrhea, abdominal pain, and vomiting. It can also cause photosensitivity reactions, making your skin more sensitive to sunlight. Liver issues, allergic reactions, and intracranial hypertension are rare but potentially life-threatening side effects.
  • Age Considerations: The risk of tooth discoloration and potential impact on bone development make Doxycycline an inappropriate medication for children under eight.
  • Pregnancy and Lactation: Doxycycline is not usually recommended during pregnancy or while breastfeeding due to potential harm to the fetus or nursing infant. Pregnant or breastfeeding individuals should consult their healthcare provider before taking Doxycycline.
If you’re considering using Doxycycline for strep throat, you can get a quick online consultation with a qualified professional now.

Is Doxycycline stronger than Amoxicillin?

Although Doxycycline and Amoxicillin are antibiotics, they are of different classes and work differently. Whether one is “stronger” depends on several factors, including the type of infection being treated, the specific bacteria involved, and individual patient factors such as allergies and tolerance.

When compared to Amoxicillin, Doxycycline typically kills a broader variety of bacteria. Infections caused by bacteria resistant to other antibiotics are commonly treated with it. Both antibiotics have the potential to combat specific bacterial infections effectively.

Your doctor will consider various factors when determining which antibiotic to prescribe, including the type of infection, the likely causative bacteria, the patient’s medical history, and any known allergies. Some people have an allergy to penicillin antibiotics and cannot take amoxicillin. In such cases, Doxycycline is a very effective option.

Consult a doctor

It is advisable to consult a healthcare provider if you suspect you have strep throat or if you experience symptoms such as:

If your tonsils are red and swollen, with white patches or streaks of pus, that also requires medical attention. On the other hand, strep throat is caused by bacteria and frequently requires antibiotic treatment. While viral infections can cause some cases of sore throat, antibiotics may not be necessary for treating strep throat.

If you have used Doxycycline for strep throat or have any questions about its effectiveness and use, you can talk to a doctor now


Does Doxycycline work for both strep and pneumonia?

The effectiveness of Doxycycline in treating pneumonia depends on the specific cause of the pneumonia and whether the bacteria causing it are susceptible to Doxycycline. Consulting a healthcare provider for proper diagnosis and treatment recommendations is essential.

How do you know if it’s strep or just a sore throat?

It can sometimes be challenging to distinguish between strep throat and a sore throat caused by a viral infection based solely on symptoms. Yet, the classic signs of strep throat include a very painful throat, trouble swallowing, fever, enlarged lymph nodes in the neck, and enlarged tonsils with pus streaks or white patches.

What infections will Doxycycline clear up?

Among the many bacterial infections that Doxycycline is often prescribed to treat include strep throat, certain types of pneumonia, acne, cellulitis, dermatitis, infections of the urinary tract, sexually transmitted diseases (STIs), including syphilis, chlamydia, and gonorrhea, and diseases spread by ticks, including Rocky Mountain spotted fever and Lyme disease.

Your Doctors Online uses high-quality and trustworthy sources to ensure content accuracy and reliability. We rely on peer-reviewed studies, academic research institutions and medical associations to provide up-to-date and evidence-based information to the users.

  • van Driel ML, De Sutter AI, Habraken H, Thorning S, Christiaens T. Different antibiotic treatments for group A streptococcal pharyngitis. Cochrane Database Syst Rev. 2016 Sep 11;9(9):CD004406. doi: 10.1002/14651858.CD004406.pub4. Update in: Cochrane Database Syst Rev. 2021 Mar 17;3:CD004406. PMID: 27614728; PMCID: PMC6457741.
  • Luitse, S., R. M. Franssen, R. M. Hogenboom, and W. L. Hengeveld. “Treatment of acute respiratory tract infections with doxycycline in general practice.” Chemotherapy 21, no. suppl 1 (1975): 136-42.

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