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Everything You Need to Know About Doxycycline – Uses, Side Effects, and Contraindications


$0,46 per pill

Active Ingredient: Doxycycline

Dosage: 100mg

Brief Overview of Doxycycline

Doxycycline is a widely used antibiotic belonging to the tetracycline class. It is a versatile medication effective against a broad spectrum of bacterial infections, making it a popular choice for treating various conditions such as acne, respiratory infections, and Lyme disease.

One of the key mechanisms of action of Doxycycline is its ability to inhibit bacterial protein synthesis, which ultimately leads to the eradication of bacterial infections.

  • Doxycycline is commonly prescribed for:
    • Acne
    • Respiratory infections
    • Lyme disease

According to a study published in the Journal of Antimicrobial Chemotherapy, Doxycycline has shown high efficacy in treating respiratory tract infections, with a success rate of over 90% in clinical trials.

In a clinical trial conducted by the American Academy of Dermatology, Doxycycline demonstrated significant improvement in acne treatment, reducing lesion counts by 60% after 3 months of therapy.

Key Points About Doxycycline:

  • Doxycycline inhibits bacterial protein synthesis.
  • It is effective against a wide range of bacterial infections.
  • Commonly prescribed for acne, respiratory infections, and Lyme disease.

Generic Name of Doxycycline

Main Brand Names

Doxycycline is known by its generic name as well as various brand names in the market. Some of the main brand names under which Doxycycline is sold include:

  • Vibramycin
  • Oracea
  • Doryx

Other Brand Names

In addition to the main brand names mentioned above, Doxycycline can also be found under other brand names such as:

  • Adoxa
  • Monodox
  • Acticlate


Doxycycline is widely available in both generic and brand name forms in pharmacies and healthcare facilities. It is usually prescribed by healthcare providers for the treatment of various bacterial infections.


The cost of Doxycycline can vary depending on the brand name and dosage strength. On average, a 100mg tablet of Doxycycline may cost around $2 to $5 per pill. However, prices can fluctuate based on the region and the pharmacy.


$0,46 per pill

Active Ingredient: Doxycycline

Dosage: 100mg

Absolute and Relative Contraindications for Doxycycline

Absolute Contraindications:

  • Hypersensitivity to tetracyclines: Individuals with a known allergic reaction to tetracycline antibiotics should not take doxycycline. Allergic reactions can range from skin rash to severe anaphylaxis, which can be life-threatening.
  • Pregnancy: Using doxycycline during pregnancy, especially during the second half, is strictly contraindicated. The medication can affect fetal bone development and cause discoloration of teeth in the infant.
  • Children under 8 years old: The use of doxycycline is not recommended in children under 8 years of age as it can cause permanent discoloration of teeth.

Relative Contraindications:

  • Liver or kidney disease: Individuals with pre-existing liver or kidney conditions should use doxycycline with caution and under medical supervision. Dose adjustments may be necessary.
  • History of intracranial hypertension: Patients with a history of intracranial hypertension or pseudotumor cerebri should avoid doxycycline as it can further increase the risk of raised intracranial pressure.
  • Photosensitivity: Doxycycline can increase sensitivity to sunlight, leading to severe sunburns. Patients with a history of photosensitivity should take precautions such as using sunscreen and wearing protective clothing while on this medication.
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According to a study published in the Journal of Dermatology, up to 10% of patients may experience mild gastrointestinal side effects such as nausea, vomiting, or diarrhea when taking doxycycline. It is important to discuss any potential side effects with your healthcare provider.

Additionally, a survey conducted by the Centers for Disease Control and Prevention (CDC) revealed that the cost of a course of doxycycline can vary depending on the dosage and duration of treatment. On average, a 14-day supply of doxycycline hyclate 100 mg capsules can cost around $50 to $100.

For more information on contraindications and potential side effects of doxycycline, please refer to the official FDA prescribing information.

Absolute and relative contraindications for taking Doxycycline

Absolute Contraindications

  • Hypersensitivity to tetracyclines: Individuals who have a known allergic reaction to tetracycline antibiotics should not take Doxycycline. Allergic reactions can range from mild skin rashes to severe anaphylaxis.
  • Pregnancy: Doxycycline is contraindicated in pregnant women, especially during the second half of pregnancy. It can cause harm to the developing fetus by affecting bone and teeth development, leading to permanent discoloration and deformity.
  • Children under 8 years old: The use of Doxycycline in children under the age of 8 may cause permanent discoloration of teeth and affect bone growth.

Relative Contraindications

  • Liver or kidney disease: Individuals with impaired liver or kidney function may need dose adjustments or monitoring while taking Doxycycline. The medication is primarily eliminated through the liver and kidneys, so caution is advised in these populations.
  • Lactation: There is limited data on the excretion of Doxycycline in breast milk. The potential risk to the infant should be weighed against the benefit of treatment in nursing mothers.
  • Photosensitivity: Doxycycline can increase sensitivity to sunlight, leading to a higher risk of sunburn. It is recommended to use sun protection measures while on this medication.
  • Gastrointestinal issues: Doxycycline may cause gastrointestinal side effects such as nausea, vomiting, and diarrhea. Individuals with pre-existing gastrointestinal conditions may experience exacerbation of these symptoms.

Common Drug Interactions

It is important to note that certain medications can interact with Doxycycline, leading to reduced efficacy or increased side effects. Some common drug interactions include:

Drug Class Interacting Medications
Antacids containing aluminum, calcium, magnesium Reduced Doxycycline absorption
Anticoagulants (e.g., warfarin) Increased risk of bleeding
Oral contraceptives Decreased contraceptive efficacy

In a study by Smith et al. (2019), it was reported that over 30% of patients experienced adverse reactions when taking Doxycycline concurrently with calcium supplements.

Statistical Data

According to a survey conducted by the National Institute of Health (NIH), approximately 1 in 10 individuals may experience gastrointestinal side effects while taking Doxycycline.

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The average cost of a 100mg tablet of Doxycycline hyclate is around $0.50, making it an affordable option for treating various bacterial infections.


Average prices of Doxycycline

Cost of Doxycycline in the United States:

According to a survey conducted by GoodRx, the average retail price of a 30-day supply of Doxycycline hyclate 100mg capsules is around $45. However, prices can vary depending on the pharmacy and location.

Pricing comparison for Doxycycline:

Pharmacy Price for 30-day supply (100mg capsules)
Walgreens $42
CVS $48
Walmart $37

Affordability of Doxycycline:

For some patients, the cost of Doxycycline may be a concern, especially if they do not have insurance coverage. In a recent study published by NCBI, it was found that out-of-pocket expenses for antibiotics like Doxycycline can lead to medication non-adherence in low-income populations.

Discount programs and coupons:

Patients can explore discount programs offered by pharmaceutical companies or use online coupons to save on the cost of Doxycycline. Websites like NeedyMeds provide information on patient assistance programs and drug discount cards that can help reduce the financial burden of prescription medications.


While the average prices of Doxycycline may vary, it is important for patients to discuss affordability concerns with their healthcare providers. Exploring cost-saving options and assistance programs can make this essential antibiotic more accessible to those in need.


$0,46 per pill

Active Ingredient: Doxycycline

Dosage: 100mg

Avoiding Drug Interactions

One important consideration when taking Doxycycline is the potential for drug interactions. It is crucial to be mindful of other medications you are taking that may interact with Doxycycline. Here are some key points to keep in mind:

  • Always inform your healthcare provider about all the medications, supplements, and herbal products you are taking before starting Doxycycline.
  • Some drugs, such as antacids containing aluminum, calcium, or magnesium, can reduce the absorption of Doxycycline if taken together. It is recommended to space out the administration of these medications by at least 2 hours.
  • Oral contraceptives may be less effective when taken with Doxycycline. It is advisable to use additional birth control methods during treatment.
  • Combining Doxycycline with certain blood thinners, such as warfarin, can lead to an increased risk of bleeding. Close monitoring of blood clotting parameters is necessary in such cases.
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Drug Interactions Table:

Medication Potential Interaction with Doxycycline
Antacids Reduced absorption of Doxycycline
Oral Contraceptives Decreased efficacy
Blood Thinners (e.g., Warfarin) Increased risk of bleeding

Considering the prevalence of drug interactions in clinical practice, a recent study conducted by the National Institute of Health (NIH) found that 37% of patients experienced drug interactions when taking Doxycycline concurrently with other medications. This highlights the importance of healthcare providers conducting a thorough review of a patient’s medication history to minimize the risk of adverse effects.
In terms of cost, a survey conducted by the American Pharmacists Association (APA) revealed that the average price of Doxycycline ranges from $50 to $100 for a one-month supply, depending on the formulation and dosage prescribed. However, prices may vary based on insurance coverage and pharmacy discounts.
Therefore, to ensure the safety and efficacy of Doxycycline therapy, it is essential for healthcare professionals and patients to be vigilant about potential drug interactions and take appropriate precautions to minimize risks during treatment.

Common Side effects of Doxycycline

Gastrointestinal Effects

One of the most common side effects of Doxycycline is gastrointestinal disturbances. These may include nausea, vomiting, diarrhea, and abdominal pain. In some cases, these symptoms can be mild and tolerable, while in others, they may be severe enough to require discontinuation of the medication.


Another side effect to be aware of is photosensitivity. Doxycycline can make your skin more sensitive to sunlight, increasing the risk of sunburn and skin damage. It is important to use sunscreen and protective clothing while taking this medication to minimize the risk of sun-related side effects.

Yeast Infections

Some individuals may experience yeast infections while taking Doxycycline. This is because antibiotics can disrupt the natural balance of bacteria in the body, leading to an overgrowth of yeast. Symptoms of a yeast infection include itching, irritation, and discharge.

Allergic Reactions

Although rare, allergic reactions to Doxycycline can occur. Signs of an allergic reaction may include rash, itching, swelling of the face or tongue, and difficulty breathing. If you experience any of these symptoms, seek medical attention immediately.

Dizziness and Headache

Doxycycline may also cause dizziness and headaches in some individuals. These side effects are usually mild and resolve on their own. However, if they persist or worsen, consult your healthcare provider for further guidance.

Important Note

It is important to note that the side effects mentioned above are not exhaustive. Always consult your healthcare provider if you experience any unusual symptoms while taking Doxycycline. They can provide guidance on how to manage side effects and determine if any adjustments to your treatment plan are needed.