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The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Keflex (Cephalexin)

Brand

Keflex (Cephalexin)

Prescription Required

Strength
Qty
500mg
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Generic Equivalent - Keflex (Cephalexin)

Prescription Required

Strength
Qty
250mg
500mg
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  • Product Details

    Description

    Keflex is an antibiotic used to treat certain infections, including:

    • Respiratory tract infections
    • Ear infections
    • Skin infections
    • Bone infections
    • Genitourinary tract infections


    Keflex is available in 250 mg, 500 mg, and 750 mg oral capsules. The generic name for Keflex is cephalexin.


    Fact Table

    Formula

    C16H17N3O4S

    License

    US FDA, US DailyMed

    Bioavailability

    Well absorbed

    Legal status

    Rx-Only

    Chemical Name

    Cefalexin

    Elimination half-life

    0.6–1.2 hours

    Dosage (Strength)

    250mg, 500mg

    Pregnancy

    Safe

    Brands

    Keflex

    Protein binding

    15%

    PubChem CID

    2666

    MedlinePlus

    a682733

    ChEBI

    3534

    ATC code

    J01DB01

    DrugBank

    DB00567

    KEGG

    D00263

    Routes of administration

    By mouth

    Directions

    Take the medication as prescribed by your doctor. You should finish your treatment course, even if you start to feel better. If you have questions or concerns, talk to your doctor or pharmacist.

    Each patient's dose depends on age and the type of infection being treated. The duration of treatment is usually 7 to 14 days, but it depends on the type of infection being treated and its severity. The dose may need to be adjusted in patients with kidney problems. 

    Ingredients

    Cephalexin, a cephalosporin, is the active ingredient in Keflex.

    Contraindications

    Patients who are allergic to Keflex or any of the other antibiotics in its class should not take the medication.

    Cautions

    • Before you begin treatment with Keflex, you should tell your doctor about:
      • All the medications you take
      • Your allergies
      • Your health history and current health problems
      • Your pregnancy or breastfeeding status
    • Keflex can cause serious allergic reactions, including anaphylaxis. You should seek emergency care immediately if you have trouble breathing, a rash, or swelling of the face, tongue, or throat. 
    • Keflex can cause Clostridium difficile-associated diarrhea.
    • Anemia can occur during treatment with cephalosporins.
    • Seizures can occur with cephalosporins, especially in patients with kidney problems. 
    • Cephalosporins can cause prolonged prothrombin time, especially in patients with kidney or liver problems, malnutrition, or in patients receiving a protracted course of antibiotics and in patients taking anticoagulants.
    • Long-term use of Keflex can cause an overgrowth of bacteria that has become resistant to the antibiotic.

    Side Effects

    Keflex can cause side effects, including diarrhea, nausea, vomiting, indigestion, and stomach pain. However, other side effects can occur, and it's recommended that you call your doctor if you develop side effects that bother you or won't go away.

    Reference:

    Keflex cephalexin capsules. Locust Valley, NY: Fera Pharmaceuticals, LLC; 2018.




    Questions & Answers
    avatar
    Popular Questions

    1 month ago
    1 month ago
    The chemical formula for Keflex is C16H17N3O4S. Understanding the chemical composition can be important for pharmacists and healthcare providers to identify the medication accurately.
    1 month ago
    1 month ago
    The elimination half-life of Keflex is between 0.6 to 1.2 hours. Knowing the half-life helps in understanding how frequently the medication needs to be administered.
    1 month ago
    1 month ago
    Keflex, or cephalexin, is a first-generation cephalosporin antibiotic that is effective against a range of gram-positive bacteria and some gram-negative bacteria. It is considered a moderate-strength antibiotic, suitable for treating common infections like skin infections, respiratory tract infections, and urinary tract infections. While effective for these purposes, it may not be strong enough for more resistant or severe bacterial infections, which may require broader-spectrum antibiotics. For further consultation, you can contact us at our toll-free number, 1-800-891-0844, or chat with us online. We are available 24 hours a day, 7 days a week.
    1 month ago
    1 month ago
    Yes, Keflex can cause Clostridium difficile-associated diarrhea. Awareness of this potential side effect is important for managing and monitoring symptoms during treatment.
    1 month ago
    1 month ago
    Keflex is Rx-Only, meaning it is available only by prescription. This ensures that the drug is used under medical supervision, which is important for safety and efficacy.
    1 month ago
    1 month ago
    The active ingredient in Keflex is cephalexin, a cephalosporin antibiotic. Understanding the active ingredient helps in recognizing potential allergies or drug interactions.
    1 month ago
    1 month ago
    Keflex is used to treat respiratory tract infections, ear infections, skin infections, bone infections, and genitourinary tract infections. This wide range of applications makes it a versatile choice for many common bacterial infections.
    1 month ago
    1 month ago
    Keflex is available in 250 mg, 500 mg, and 750 mg oral capsules. This allows for flexibility in prescribing the appropriate dosage based on the severity of the infection and patient needs.
    1 month ago
    1 month ago
    Keflex is considered safe during pregnancy. This is valuable information for pregnant individuals needing treatment for bacterial infections.
    1 month ago
    1 month ago
    Keflex has a protein binding of 15%. This low binding rate can affect the distribution and availability of the drug in the body.
    View all

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    IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

    Product Code : 9533

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