Fosamprenavir Tablets

What is this medication?

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. This medicine can lower, but not fully prevent, the risk of spreading HIV to others.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

COMMON BRAND NAME(S): Lexiva

What should I tell my care team before I take this medication?

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

How should I use this medication?

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.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

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.

What may interact with this medication?

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

• astemizole
• bepridil
• delavirdine
• 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, lovastatin, rosuvastatin, simvastatin
• midazolam
• naloxegol
• 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:

• antacids
• cyclosporine
• dexamethasone
• fluticasone
• medicines for depression, anxiety, or psychotic disturbances like lurasidone and quetiapine
• medicines for erectile dysfunction like sildenafil
• medicines for fungal infections like ketoconazole and itraconazole
• medicines for irregular heart beat like amiodarone, dofetilide, lidocaine, quinidine
• medicines for high blood pressure like amlodipine, diltiazem, verapamil
• medicines for seizures
• methadone
• other medicines for HIV
• rapamycin
• rifabutin
• sirolimus
• tacrolimus
• warfarin

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medication?

Visit your doctor or health care provider 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 increase blood sugar. Ask your healthcare provider if changes in diet or medicines are needed if you have diabetes.

What side effects may I notice from receiving this medication?

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
• signs and symptoms of high blood sugar such as being more thirsty or hungry or having to urinate more than normal. You may also feel very tired or have blurry vision.

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

• diarrhea
• nausea, vomiting
• unusually weak
• weight gain around waist, back, or thinning of face, arms, legs

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Where should I keep my medication?

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.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.