Compare Reyataz vs. Kaletra

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

Reyataz (Atazanavir)

No information currently available
Treats HIV infection.

Kaletra (lopinavir / ritonavir) is not commonly used to treat HIV because of its side effects and the number of pills you have to take daily.

No information currently available
  • Kaletra (lopinavir / ritonavir) can be taken once or twice daily.
  • Tablets can be taken with or without food.
  • An oral solution is available if tablets are hard to swallow.
No information currently available
  • Has more side-effects compared to newer medicines that work like it.
  • You may have to take up to 4 tablets to meet your required daily dose.
  • Interacts with many other medicines and supplements.
  • Can increase your risk for a heart attack.
Used for
  • HIV infection
Dosage forms
  • Pill
  • Pill
  • Liquid
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Side effects
The Reyataz (Atazanavir) FDA package insert doesn’t have numbers about how common side effects are.
10possible side effects
  • Diarrhea
  • Upper respiratory tract infection
  • Nausea
  • Fatigue and weakness
  • Lower respiratory tract infection
  • Vomiting
  • High cholesterol
  • Bone, joint and back pain
  • Abdominal pain
  • High fats
See more detailed side effects
Risks and warnings
No information currently available
  • Liver damage

    History of liver damage

    ...and 1 more risk factors

  • Heart (atrioventricular) block

    Use with other QT or PR prolonging drugs

    ...and 2 more risk factors

  • Immune recovery syndrome


    ...and 3 more risk factors

  • New or worsening diabetes

    Use of protease inhibitors

    ...and 1 more risk factors

  • Pancreatitis

    Advanced HIV disease

    ...and 1 more risk factors

See more detailed risks and warnings