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Fosamprenavir Calcium Oral tablet

Additional titles for this drug

Lexiva 700mg Tablet

What is this medicine?

FOSAMPRENAVIR (FOS am pren a veer) is an antiretroviral medicine. It is used with other medicines to treat HIV. This medicine is not a cure for HIV. It will not stop the spread of HIV to others.

How should I use this medicine?

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. You can take it with or without food. Take your medicine at regular intervals. Do not take your medicine more often than directed. For your anti-HIV therapy to work as well as possible, take each dose exactly as prescribed. Do not skip doses or stop your medicine even if you feel better. Skipping doses may make the HIV virus resistant to this medicine and other medicines. Do not stop taking except on your doctor's advice.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for selected conditions, precautions do apply.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue

  • redness, blistering, peeling or loosening of the skin, including inside the mouth

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • diarrhea

  • increased hunger or thirst

  • increased urination

  • nausea, vomiting

  • unusually weak or tired

  • weight gain around waist, back, or thinning of face, arms, legs

What may interact with this medicine?

Do not take this medicine with any of the following medications:

  • astemizole

  • bepridil

  • cisapride

  • delavirdine

  • dofetilide

  • flecainide

  • female hormones, like estrogens or progestins and birth control pills, patches, rings, or injections

  • medicines for headaches like dihydroergotamine, ergonovine, ergotamine, methylergonovine

  • medicines for high cholesterol like atorvastatin, cerivastatin, lovastatin, rosuvastatin, simvastatin

  • midazolam

  • pimozide

  • propafenone

  • ranolazine

  • red yeast rice

  • rifampin

  • rifapentine

  • triazolam

  • St. John's wort

  • vitamin E supplements

This medicine may also interact with the following medications:

  • amiodarone

  • antacids

  • cyclosporine

  • dexamethasone

  • fluticasone

  • lidocaine

  • medicines for depression, anxiety, or psychotic disturbances

  • medicines for erectile dysfunction

  • medicines for fungal infections like ketoconazole and itraconazole

  • medicines for high blood pressure like amlodipine, diltiazem, verapamil

  • medicines for seizures

  • methadone

  • other medicines for HIV

  • quinidine

  • rapamycin

  • rifabutin

  • sildenafil

  • sirolimus

  • tacrolimus

  • warfarin

What if I miss a dose?

If you miss a dose by more than 4 hours, wait and take the next dose at the regular time. But, if you miss a dose by less than 4 hours, take your missed dose right away. Then take your next dose at the regular time. Do not take double or extra doses.

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Keep container tightly closed. Throw away any unused medicine after the expiration date.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • diabetes

  • hemophilia

  • kidney disease

  • liver disease

  • an unusual or allergic reaction to fosamprenavir, amprenavir, sulfa drugs, other medicines, foods, dyes, or preservatives

  • pregnant or trying to get pregnant

  • breast-feeding

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular check ups. Discuss any new symptoms with your doctor. You will need to have important blood work done while on this medicine.

HIV is spread to others through sexual or blood contact. Talk to your doctor about how to stop the spread of HIV.

Birth control pills, patches, rings, or injections may not work properly while you are taking this medicine. Talk to your doctor about using an extra method of birth control. Women who can still have children must use a reliable form of barrier contraception, like a condom or diaphragm.

This medicine may affect blood sugar levels. If you have diabetes, check with your doctor or health care professional before you change your diet or the dose of your diabetic medicine.