medication

Cephalexin

Also known as: Keflex

Chemical structure of Cephalexin (PubChem CID 27447)
Structure via PubChem
Half-life
1 h
Typical timing
with_meal
Food rule
either
Default unit
mg

Overview

Cephalexin, also known by the brand name Keflex, is an antibiotic belonging to the class of drugs called cephalosporins. It is commonly prescribed to treat a variety of bacterial infections, including those affecting the respiratory tract, skin and soft tissue, bones, joints, urinary tract, and middle ear. Cephalexin is effective against a broad spectrum of Gram-positive bacteria and some Gram-negative bacteria. It works by interfering with the formation of the bacterial cell wall, which is essential for the survival of the bacteria. Cephalexin is available in oral forms, including capsules, tablets, and an oral suspension. It is not an injectable medication. The dosage and duration of treatment with Cephalexin are user-directed and must be set by a licensed clinician based on the type and severity of the infection, as well as the patient's individual factors. As an antibiotic, it is crucial to complete the full course of treatment as prescribed, even if symptoms improve, to prevent the development of antibiotic resistance. (MedlinePlus)

Deep dive

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Known interactions

  • Category rule: supplement × medication
    Note

    Some supplements change how the body processes medications (absorption, liver enzymes, or additive effects).

    Specific pairs are checked against a licensed drug database and shown with their own severity. Always confirm with your provider or pharmacist.

  • Category rule: vitamin × medication
    Note

    Certain vitamins interact with specific medications (e.g., vitamin K with blood thinners).

    Specific pairs are checked against a licensed source; confirm with your provider.

Frequently asked

Sources referenced

["U.S. National Library of Medicine, MedlinePlus", "National Institutes of Health, Office of Dietary Supplements (NIH ODS)", "DrugBank", "Mayo Clinic", "U.S. Food and Drug Administration (FDA) label for Cephalexin", "Cochrane Library"]

Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.

Related compounds

Others in the medication category or studied for the same goals.

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