Compare Keflex vs. Avelox

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

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Keflex (cephalexin)

Prescription only

Avelox (moxifloxacin)

Prescription only
Treats bacterial infections.

Keflex (cephalexin) is good for treating many bacterial infections, and is available as a generic.

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3.7/ 5 average rating with 686 reviewsforKeflex
Treats bacterial infections.

Avelox (moxifloxacin) effectively treats different types of bacterial infections, but is more expensive than its alternatives.

Upsides
  • 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.
  • Available as a generic medicine.
  • Treats a variety of bacterial infections.
  • Can be taken with or without food.
  • Might be a good treatment option for people with kidney problems.
  • Needs to be taken only once a day.
Downsides
  • 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.
  • People with diabetes need to check their blood sugar levels regularly while taking Avelox (moxifloxacin).
  • Cannot be taken at the same time as antacids or vitamins.
  • Avelox (moxifloxacin) can increase your skin's sensitivity to sunlight and make you more likely to get a rash.
  • Relatively more expensive compared to similar alternatives.
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Used for
Dosage forms
  • Pill
  • Liquid
  • Pill
Price
Lowest price
$9.61
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Lowest price
$14.65
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Reviews
686 reviews so far
64%
saidit'sworth it
48%
saiditworked well
14%
saidit'sa big hassle

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Side effects
The Keflex (cephalexin) FDA package insert doesn’t have numbers about how common side effects are.
8possible side effects
  • Nausea
    7%
  • Diarrhea
    6%
  • Headache
    4%
  • Dizziness
    3%
  • Vomiting
    2%
  • Constipation
    2%
  • Stomach pain
    2%
  • Insomnia
    2%
See more detailed side effects
Risks and risk factors
  • Diarrhea
  • New infections while taking Keflex (cephalexin)
    • Weakened immune system
    • Not taking Keflex (cephalexin) correctly
  • Allergic reaction
    • History of penicillin or cephalosporin allergies
See more detailed risks and warnings
  • Tendon rupture and inflammation
    • People over age 60
    • Taking steroid medicine
    • Those with kidney, heart, or lung transplants
  • Myasthenia gravis
    • Those with a history of myasthenia gravis
  • Diarrhea
  • Nerve damage
  • Changes in mood and behavior
  • Effects on heartbeat
    • Those with a history of heart rhythm problems
    • Taking other medicines that also affect your heart rhythm
    • Those with liver problems
See more detailed risks and warnings
Learn more about Keflex (cephalexin)
Learn more about Avelox (moxifloxacin)