Font Size

Medications and Drugs

Brand Names: Reyataz

Generic Name: atazanavir (Pronunciation: a ta ZAN a vir)

What is atazanavir (Reyataz)?

Atazanavir is an antiviral medication in a group of HIV medicines called protease (PRO-tee-ayz) inhibitors. Atazanavir prevents human immunodeficiency virus (HIV) cells from multiplying in your body.

Atazanavir is used to treat HIV, which causes acquired immunodeficiency syndrome (AIDS). Atazanavir is not a cure for HIV or AIDS.

Atazanavir may also be used for purposes not listed in this medication guide.

Reyataz 100 mg

capsule, blue/white, imprinted with BMS 100 mg, 3623

Reyataz 150 mg

capsule, blue/light blue, imprinted with BMS 150 mg, 3624

Reyataz 200 mg

capsule, blue, imprinted with BMS 200 mg, 3631

Reyataz 300 mg

capsule, blue/red, imprinted with BMS 300 mg, 3622

What are the possible side effects of atazanavir (Reyataz)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop taking atazanavir and call your doctor at once if you have a serious side effect such as:

  • severe dizziness, fast or pounding heartbeats, feeling like you might pass out;
  • severe pain in your side or lower back, painful urination, blood in your urine;
  • easy bruising or bleeding, signs of a new infection such as fever or chills, cough, or flu symptoms;
  • jaundice (yellowing of the skin or eyes);
  • increased sweating, tremors in your hands, anxiety, feeling irritable, sleep problems (insomnia);
  • diarrhea, unexplained weight loss, menstrual changes, impotence, loss of interest in sex;
  • swelling in your neck or throat (enlarged thyroid);
  • muscle weakness, tired feeling, trouble speaking or swallowing, joint or muscle pain, feeling short of breath;
  • weakness or prickly feeling in your fingers or toes, loss of bladder or bowel control;
  • problems with walking, speech, swallowing, or eye movement;
  • high blood sugar (increased thirst, increased urination, hunger, dry mouth, fruity breath odor, drowsiness, dry skin, blurred vision); or
  • severe skin reaction -- fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.

Less serious side effects may include:

  • nausea, vomiting, stomach pain;
  • numbness or burning pain in your hands or feet;
  • headache, dizziness, depressed mood;
  • changes in the shape or location of body fat (especially in your arms, legs, face, neck, breasts, and waist).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about atazanavir (Reyataz)?

You should not take this medication if you are allergic to atazanavir.

There are many other drugs that should not be used together with atazanavir. Tell your doctor about all other medicines you use. Do not start a new medication without telling your doctor. Keep a list of all your medicines and show it to any healthcare provider who treats you.

Before using atazanavir, tell your doctor if you have liver disease, hepatitis, kidney disease (or if you are on dialysis), diabetes, a bleeding disorder, high cholesterol, heart problems, or if you have ever used a protease inhibitor in the past.

Taking this medication will not prevent you from passing HIV to other people. Avoid having unprotected sex or sharing razors or toothbrushes. Sharing drug or medicine needles is never safe, even for a healthy person.

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.

Medical Dictionary