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Compare Cephalexin vs. Ceftriaxone

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

  • Cephalexin
    Ceftriaxone
  • Cephalexin
    Ceftriaxone

  • Summary of Cephalexin vs. Ceftriaxone

    Summary for Cephalosporin antibiotic
    Prescription only

    Cephalexin is a common antibiotic that's used to treat many different bacterial infections including urinary tract infections (UTIs), ear infections, and sinus infections, to name a few. Cephalexin is a cephalosporin antibiotic that kills bacteria to fight the infection. It's safe to use in people over the age of 1, and it's typically taken by mouth 2 to 4 times per day. This medication is available as a lower-cost generic capsule, tablet, and suspension; the brand name Keflex is no longer available. Side effects can include nausea, vomiting, and diarrhea.

    Summary for Cephalosporin antibiotic
    Prescription only

    Ceftriaxone is one of the most commonly used antibiotics because of its low risk for side effects and its ability to treat several types of bacterial infections. Ceftriaxone is an injection given either into the veins or into the muscle, so it's used most often in the hospital or a clinic setting (e.g., nursing home, provider's office). But it can also be used at home in certain situations. The dosage depends on the type and severity of your infection, but it's usually given once per day. If you have a penicillin allergy, you might still be able to receive ceftriaxone depending on your reaction to penicillin.

  • Indications of Cephalexin vs. Ceftriaxone

    Indications for
    •Respiratory tract infections
    •Ear infections
    •Skin infections
    •Bone infections
    •Urinary tract infections (UTIs)
    •Reproductive system infections
    Indications for
    •Lower respiratory tract infections (e.g., pneumonia, bronchitis)
    •Ear infections
    •Stomach infections
    •Urinary tract infections (UTIs)
    •Skin infections (e.g., cellulitis)
    •Bone and joint infections
    •Bloodstream infections
    •Meningitis
    •Gonorrhea
    •Pelvic inflammatory disease (PID)
    •Preventing infection from surgery

  • Pros and Cons of Cephalexin vs. Ceftriaxone

    Pros and Const for Cephalosporin antibiotic
    Pros
    •Treats several common types of bacterial infections
    •Can use for adults and children over the age of 1
    •Available as a liquid for people who have trouble swallowing pills
    •Available as a lower-cost generic
    Cons
    •Usually need to take a few times per day
    •Might not be able to take if you're allergic to penicillins or other cephalosporin antibiotics
    •Not recommended for the cold or flu (these are viral illnesses, not bacterial infections)
    Pros and Const for Cephalosporin antibiotic
    Pros
    •Can treat many different types of infections
    •Can use in people with kidney problems
    •Can use in children
    •Typically given once per day
    Cons
    •Must be given by an injection into the veins or into the muscle
    •Sometimes requires twice-daily dosing for more severe infections
    •Not a good choice for treating infections caused by resistant bacteria
    •Might not be the best choice if you've had an allergic reaction to penicillins or other cephalosporin antibiotics

  • Common Side Effects of Cephalexin vs. Ceftriaxone

    Common Side Effects for
    •Diarrhea
    •Nausea
    •Vomiting
    •Indigestion
    •Stomach pain
    Common Side Effects for
    •Side effects aren't common. See Other Side Effects.

  • Warnings of Cephalexin vs. Ceftriaxone

    Common Side Effects for
    •Allergic reactions
    •Diarrhea from Clostridioides difficile infection
    •Development of drug-resistant bacteria
    •Seizures
    •Higher risk of bleeding
    Common Side Effects for
    •Allergic reactions
    •Avoid administration with calcium-containing medications
    •Nervous system side effects
    •Diarrhea from Clostridioides difficile infection
    •Low red blood cell count (hemolytic anemia)
    •Development of drug-resistant bacteria

  • Prices with our coupons for Cephalexin vs. Ceftriaxone

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