Compare Biaxin vs. Keflex

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Biaxin
(clarithromycin)

Keflex
(cephalexin)

Coming soon.Treats bacterial infections. Keflex (cephalexin) is good for treating many bacterial infections, and is available as a generic.
Reviews & ratings
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Have you used Biaxin (clarithromycin)?
Worth itNot sureNot worth it
Reviews for Keflex
64%
+36% better vs. Biaxin
48%
+52% better vs. Biaxin
14%
-19% worse vs. Biaxin
686 reviews
Have you used Keflex (cephalexin)?
Worth itNot sureNot worth it
Side effects
BiaxinKeflex

We haven’t found good data for Biaxin side effects.

FDA side effect reports for Biaxin »

The Keflex FDA package insert doesn’t have numbers about how common side effects are.

More about Keflex side effects »
How it works
BiaxinKeflex
Coming soon.Keflex (cephalexin) is an antibiotic. It kills bacteria by preventing them from making their own protective covering.
Type of medication
BiaxinKeflex
Prescription only
Available as
BiaxinKeflex
  • Pill
  • Extended release
  • Liquid
  • Pill
  • Liquid
Used for
BiaxinKeflex
  • Acute Infective Exacerbation Of Chronic Bronchitis Acute Otitis Media Community Acquired Pneumonia Disseminated Infection Due To Mycobacterium Avium Intracellulare Group Disseminated Infection Due To Mycobacterium Avium Intracellulare Group Prophylaxis HIV Infection Duodenal Ulcer Disease Helicobacter Pylori Gastrointestinal Tract Infection Infection Of Skin AND OR Subcutaneous Tissue
Risk factors for serious side effects
BiaxinKeflex
    Coming soon.
    • Weakened immune system
    • Not taking Keflex (cephalexin) correctly
    • History of penicillin or cephalosporin allergies
    Detailed Keflex (cephalexin) risks & warnings »
    Pregnancy

    Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

    Research studies with animals haven’t found a risk to unborn babies, but it hasn’t been properly studied in humans.

    Food
    BiaxinKeflex
    No food related info.
    • Can take with or without food.
    • Can be taken with or without food.
    Upsides and benefits
    BiaxinKeflex
    Coming soon
    • Available in generic.
    • Available in different forms: tablet, capsule, and suspension.
    • Used to treat many types of bacterial infections.
    • Can be taken with or without food.
    • Generally few side effects compared with other antibiotics.
    Downsides and risks
    BiaxinKeflex
    Coming soon
    • Can cause diarrhea.
    • You may need to take Keflex (cephalexin) 2 to 4 times a day, which can be hard to remember.
    • If you're allergic to penicillins or other antibiotics, you might not be able to take this medicine.
    Tips from our pharmacists for people taking the medication
    BiaxinKeflex
    Coming soon
    • Finish all of the medicine your doctor gives you, even if you start to feel better. Stopping it early can cause the bacteria to develop resistance.
    • Store the suspension in the refrigerator. Shake well before using, and discard the bottle after 14 days.
    • Can take with or without food.
    Learn more
    More about BiaxinSide effectsReviews & ratingsFDA package insert
    Have you used Biaxin (clarithromycin)?
    Worth itNot sureNot worth it
    More about KeflexSide effectsReviews & ratingsAlternativesFDA package insert
    Have you used Keflex (cephalexin)?
    Worth itNot sureNot worth it