This page contains brief details about the drug , it's indication, dosage & administaration, mechanism of action, related brands with strength, warnings and common side effects.

Background and Date of Approval

Doxycycline is an antibiotic that belongs to the class of medications called tetracyclines. The FDA approved it initially on 05th June 2006 for its medical use.

Mechanism of Action of undefined

Doxycycline injection is in a class of medications called tetracycline antimicrobial drug. It inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit. It has bacteriostatic activity against a broad range of gram-positive and gram-negative bacteria. It works by killing bacteria that cause infections.

Uses of undefined

It is used to treat many different types of infections, including chest, lung, or nasal infections, urinary tract infections, acne, eye infections, and sexually transmitted diseases like gonorrhea, syphilis, chlamydia, fever associated with tick bites, malaria, scrub typhus, travelers diarrhea, and leptospirosis.

undefined Drug administaration and Dosage available

Doxycycline will be administered to you by a doctor or other healthcare professional in a hospital setting. Your doctor will decide the dose, route of administration, and duration of the therapy based on your disease status, severity, and other factors such as body weight, other disease conditions, and age. This medicine will be given intravenously (into your vein). Do not self-administer the injection.

Warnings, Precautions and Side Effects of undefined


The use of doxycycline during tooth development (the last half of pregnancy, infancy, and childhood to the age of 8) may cause permanent discoloration of the teeth (yellow-grey-brown); this adverse reaction is more common during long-term use of the drugs but has been observed following repeated short-term courses. Do not take this medicine during pregnancy and breastfeeding.


Before initiating the treatment, inform your physician if you have kidney or liver problems, blood disorders, or other diseases. Do not take Doxycycline if you are allergic to Doxycycline or any other ingredients, if you are pregnant or trying to get pregnant. You should avoid exposure to strong sunlight while taking this medicine as your skin may be more sensitive to sunburn than normal.

Inform your healthcare provider about all the medicines you take, including prescription medications, over-the-counter medications, nutritional and vitamin supplements, and herbal products. Certain medications like antacids, and iron supplements may interact with doxycycline and reduce its effectiveness by causing undesirable side effects. Tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. You should not become pregnant while receiving a carmustine injection or implant.

Side Effects

Common side effects of doxycycline are rash, diarrhea, loss of appetite, nausea, vomiting, sore gums, myalgia, and bacterial vaginosis. Other serious side effects are severe skin rash, liver injury, bone problems, and infections.

Word Of Advice

Your healthcare provider will administer the drug to you. Do not self-administer. Store the medicine below 25°C. Protect the medicine from light and excessive moisture. Keep the medicine out of reach of children and pets. If you missed the dosing schedule, inform your healthcare professional immediately and reschedule. 

If you develop severe or prolonged or bloody diarrhea during or after using Doxycycline, tell your doctor immediately since it may be necessary to interrupt the treatment. When used for a long duration, the medicine may cause infections. Avoid tooth brushing, flossing, and other mechanical oral hygiene procedures for 7 days. Your doctor may advise you to take certain blood tests to assess the therapy's effectiveness and monitor the side effects.

Frequently Asked Question


  1. Doxycycline Hyclate for injection. Pfizer, [Published September 2013]. [Accessed May 2, 2023.]
  2. KD Tripathi, Essentials of Medical Pharmacology, Tetracyclines and Chloramphenicol (Broad-spectrum Antibiotics), 7th edition, 2013, 733-737.
  3. Goodman & Gilman’s, The Pharmacological Basics of Therapeutics, Protein synthesis Inhibitors and Miscellaneous Antibacterial agents, 12th edition, 2011, 1521-1527.


The drug information on this page is not a substitute for medical advice. It is meant for educational purposes only. For further details, consult your doctor about your medical condition to know if you can receive this treatment.