Kaletra (Lopinavir/Ritonavir)

What Kaletra is and what it is used for

Your doctor has prescribed Kaletra to help control Human Immunodeficiency Virus (HIV) infection by slowing the spread of the virus in your body. Kaletra is an antiretroviral medicine from a group of medicines called protease inhibitors. In Australia, it is used in adults and children aged 2 years and over who are infected with HIV (the virus that causes acquired immunodeficiency syndrome (AIDS)). Kaletra should not be given to children under 2 years of age unless their doctor specifically tells you to.

Kaletra is usually prescribed with other antiviral medicines. Your doctor will decide which medicines are best for you.

Before you take Kaletra

Do not take Kaletra

Do not take Kaletra if you are allergic (hypersensitive) to lopinavir, ritonavir or any of the other ingredients in Kaletra, or if you have severe liver problems.

Do not take Kaletra with any of the following medicines

• Astemizole or terfenadine (commonly used to treat allergy symptoms; these may be available without a prescription);
• Midazolam taken orally (by mouth) or triazolam (used to relieve anxiety and/or trouble sleeping);
• Pimozide (used to treat schizophrenia);
• Cisapride (used to treat certain stomach problems);
• Ergotamine, dihydroergotamine, ergonovine, methylergonovine (used to treat headaches);
• Amiodarone (used to treat abnormal heartbeat);
• Lovastatin or simvastatin (used to lower blood cholesterol);
• Vardenafil (used to treat erectile dysfunction);
• Sildenafil used to treat pulmonary arterial hypertension;
• Products that contain St John's wort (Hypericum perforatum).

Read the list of medicines under 'Taking other medicines' for information about certain other medicines that need special care. If you are currently taking any of the medicines listed above, ask your doctor about changing to another medicine while you are taking Kaletra.

Take special care with Kaletra

Important information

Kaletra is not a cure for HIV infection or AIDS. People taking Kaletra may still develop infections or other illnesses linked with HIV and AIDS, so it is important to stay under your doctor's care while taking this medicine. Kaletra does not reduce the risk of passing HIV on to others, so you should still take appropriate precautions to prevent transmission through sexual contact (for example, using a condom) or blood contamination.

Tell your doctor if you have/had

Tell your doctor if you have haemophilia type A or B, as Kaletra may increase the risk of bleeding. Also tell your doctor if you have diabetes or a history of liver problems. Patients with liver disease, including chronic hepatitis B or C, may be at increased risk of severe and potentially fatal liver side effects.

Tell your doctor if you experience

• Nausea, vomiting, abdominal pain, difficulty breathing, and severe weakness in the muscles of the legs and arms (these symptoms may indicate raised lactic acid levels).
• Thirst, frequent urination, blurred vision, or weight loss (these may indicate raised blood sugar levels).
• Nausea, vomiting, or abdominal pain, especially if your triglycerides are high (these symptoms may suggest pancreatitis).
• Changes in body shape due to changes in fat distribution (for example, loss of fat from the legs, arms and face; increased fat in the abdomen and internal organs; breast enlargement; fatty lumps on the back of the neck).
• Signs and symptoms of inflammation from previous infections soon after anti-HIV treatment is started (immune reconstitution).
• Joint stiffness, aches and pains (especially in the hip, knee or shoulder) and difficulty moving (possible osteonecrosis).
• Muscle pain, tenderness, or weakness; in rare cases these muscle problems have been serious.

Taking other medicines

Please tell your doctor or pharmacist in Australia if you are taking, or have recently taken, any other medicines, including medicines bought without a prescription. Special care may be needed if you take Kaletra together with certain antibiotics, antifungals, antidepressants, anti-epilepsy medicines, anticancer medicines, heart medicines (including digoxin and medicines for heart rhythm), cholesterol-lowering medicines, immunosuppressants, pain-relieving medicines (including fentanyl), methadone, non-nucleoside reverse transcriptase inhibitors (NNRTIs), other protease inhibitors, sedatives, steroids, or warfarin. Also read the section 'Do not take Kaletra with any of the following medicines' for medicines that must not be taken with Kaletra.

Erectile dysfunction medicines (vardenafil, sildenafil, tadalafil)

Do not take Kaletra if you are currently taking vardenafil. You must not take Kaletra with sildenafil used to treat pulmonary arterial hypertension. If sildenafil or tadalafil are taken together with Kaletra, you may be at risk of side effects such as low blood pressure, fainting, vision changes, and an erection lasting more than 4 hours. If an erection lasts longer than 4 hours, get medical help straight away. Your doctor can explain these symptoms to you.

Contraceptives

If you are using an oral contraceptive or a contraceptive patch to prevent pregnancy, use an additional or different type of contraception (for example, a condom) because Kaletra may reduce how well oral and patch contraceptives work. Kaletra does not reduce the risk of passing HIV on to others, so you should still take appropriate precautions (for example, using a condom) to prevent transmission through sexual contact.

Taking Kaletra with food and drink

Kaletra tablets can be taken with or without food.

Pregnancy and breast-feeding

Tell your doctor straight away if you are pregnant, think you may be pregnant, or are breast-feeding. Pregnant or breast-feeding mothers should not take Kaletra unless specifically directed by a doctor. It is recommended that women with HIV do not breast-feed their babies because HIV can be passed to the baby through breast milk.

Driving or using machines

Kaletra has not been specifically tested for its possible effects on the ability to drive or use machines. Do not drive or use machinery if you have side effects (for example, nausea) that affect your ability to do so safely. Contact your doctor if this happens.

How to take Kaletra

It is important to swallow Kaletra tablets whole and not chew, break or crush them. Kaletra tablets can be taken with or without food. Always take Kaletra exactly as your doctor has told you, and check with your doctor or pharmacist in Australia if you are not sure how to take your medicine.

How much Kaletra should be taken and when?

The usual adult dose is 400 mg/100 mg twice a day (every 12 hours) in combination with other anti-HIV medicines. Adults who have not previously taken other antiviral medicines can also take Kaletra once daily as an 800 mg/200 mg dose. Your doctor will tell you how many tablets to take. Kaletra must not be taken once daily with amprenavir, efavirenz, nevirapine, nelfinavir, carbamazepine, phenobarbital, or phenytoin.

For children, your doctor will decide the right dose (number of tablets) based on the child's height and weight. Kaletra is also supplied as 200 mg/50 mg film-coated tablets. Kaletra oral solution is available for patients who cannot take tablets.

Can I stop taking Kaletra or change my dose?

Do not stop taking Kaletra or change your daily dose without first talking to your doctor. Kaletra should be taken every day to help control HIV infection, even if you feel better. Taking Kaletra as recommended gives you the best chance of delaying resistance. If a side effect is stopping you from taking Kaletra as directed, tell your doctor straight away. Always keep enough Kaletra on hand so you do not run out, including when travelling or staying in hospital. Keep taking this medicine until your doctor tells you otherwise.

If you take more Kaletra than you should

If you realise you have taken more Kaletra than you should have, contact your doctor straight away. If you cannot contact your doctor, go to hospital.

If you forget to take Kaletra

If you miss a dose, take it as soon as possible and then continue as normal. Do not take a double dose to make up for a forgotten dose.

Possible side effects

Like all medicines, Kaletra can cause side effects, although not everybody gets them. It may be hard to tell which side effects are caused by Kaletra and which may be due to other medicines you take at the same time or to complications of HIV infection. Tell your doctor promptly about these or any other symptoms. If the problem continues or gets worse, seek medical attention.

Very common side effects (affects more than 1 user in 10)

• Diarrhoea;
• Nausea;
• Upper respiratory tract infection.

Common side effects (affects 1 to 10 users in 100)

• Inflammation of the pancreas;
• Vomiting, enlarged abdomen, stomach pain, passing wind, indigestion, decreased appetite, reflux that may cause pain;
• Swelling or inflammation of the stomach, intestines and colon;
• Increased cholesterol and triglycerides, high blood pressure;
• Reduced ability to handle sugar, including diabetes mellitus, weight loss;
• Low number of red blood cells or white blood cells;
• Rash, eczema, greasy skin scaling;
• Dizziness, anxiety, difficulty sleeping;
• Feeling tired, lack of strength and energy, headache including migraine;
• Haemorrhoids;
• Inflammation of the liver, including increased liver enzymes;
• Allergic reactions, including hives and inflammation in the mouth;
• Changes in body shape due to changes in fat distribution;
• Lower respiratory tract infection;
• Enlarged lymph nodes;
• Impotence, heavy or prolonged menstrual bleeding, or lack of menstruation;
• Muscle disorders, pain in the joints, muscles or back;
• Damage to nerves in the peripheral nervous system;
• Night sweats, itching, rash with raised bumps, skin infection, inflammation of the skin or hair follicles, fluid build-up in tissues.

Further information about nausea, vomiting or abdominal pain

Tell your doctor if you have nausea, vomiting or abdominal pain, as these symptoms may suggest pancreatitis (inflammation of the pancreas).

Further information about increased cholesterol and triglycerides

Your Australian doctor will monitor your blood fats and may prescribe other medicines if needed. Large increases in triglycerides (fats in the blood) have been considered a risk factor for pancreatitis. The long-term risk of complications such as heart attack or stroke due to increased triglycerides and cholesterol is not known at this time.

Changes in body shape due to changes in fat distribution

Combination antiretroviral therapy may cause changes in body shape due to changes in fat distribution. These may include loss of fat from the legs, arms and face, increased fat in the abdomen and internal organs, breast enlargement, and fatty lumps on the back of the neck ('buffalo hump'). The cause and long-term health effects are not known. Tell your doctor if you notice any changes in your body shape.

Uncommon side effects (affects 1 to 10 users in 1,000)

• Abnormal dreams; loss of taste or changes in taste; hair loss;
• Electrocardiogram changes (atrioventricular block); plaque build-up in the arteries;
• Inflammation of blood vessels/capillaries; inflammation of the bile ducts;
• Uncontrolled shaking; constipation; dry mouth;
• Inflammation, ulcers or bleeding in the digestive tract; red blood cells in the urine;
• Fatty deposits in the liver, enlarged liver; reduced testicular function;
• Immune reconstitution flare-up; increased appetite; high bilirubin;
• Reduced sex drive; kidney inflammation/failure;
• Osteonecrosis; mouth sores; breakdown of muscle fibres (myoglobin release);
• Ringing or buzzing in the ears; tremor; valve abnormality; vertigo; abnormal vision; weight gain.

Other side effects reported with Kaletra include yellowing of the skin or whites of the eyes (jaundice), severe or life-threatening skin rashes and blisters (Stevens-Johnson syndrome and erythema multiforme). It is not known how often these effects may occur.

If any side effect becomes serious, or if you notice any side effects not listed in this leaflet, please tell your doctor or pharmacist.

How to store Kaletra

Keep this medicine out of the sight and reach of children. Do not use Kaletra after the expiry date printed on the pack. This medicine does not require any special storage conditions.

How should I dispose of any unused Kaletra?

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist in Australia how to dispose of medicines you no longer need. These measures will help protect the environment.