Norvir (Ritonavir)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Norvir Used For?
Norvir contains ritonavir and is specifically designed to treat HIV infection, the virus that causes AIDS. This medication must be taken with other HIV medicines as part of combination therapy.
Primary Uses
Norvir is used to treat HIV (Human Immunodeficiency Virus) infection, which is the virus that causes AIDS. It works as part of combination therapy with other HIV medications.
How It Works
Norvir works by interfering with HIV’s ability to reproduce in your body, helping to control the infection when used with other HIV medicines.
Important: Norvir must be taken with other medicines to treat HIV infection – it cannot be used alone.
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How to Take Norvir
Your doctor will determine which HIV medicines to combine with Norvir and provide specific instructions on timing and duration of treatment.
Dosage Instructions
Take one to two tablets daily as advised by your doctor. Do not break, crush, or chew the tablets. Swallow them whole with a full glass of water. Take at the same time each day for best results.
What If You Miss a Dose?
If you miss your dose and it is nearly time for your next dose, skip the missed tablets and take your next dose at the usual time. It’s important to take Norvir at the same time each day.
Important: Never take a double dose to make up for the dose you missed.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- Diarrhea
- Feeling sick or vomiting
- Heartburn
- Loss of appetite
- Change in taste
- Dry mouth
- Mouth ulcers
- Stomach pain
- Indigestion
- Wind
- Headache
- Feeling dizzy
- Difficulty sleeping
- Rash
- Tingling or numbness on skin
- Feeling weak or tired
Seek immediate medical attention if you experience:
- Symptoms of lactic acid build-up (nausea, vomiting, stomach pain, difficulty breathing, severe leg/arm weakness)
- Diabetes symptoms (excessive thirst, frequent urination, blurred vision, sudden weight loss)
- Infection symptoms (fever, chills, flu-like symptoms, dental problems, painful urination, blood in urine)
- Joint stiffness and pain (especially hip, knee, shoulder)
- Yellowing of skin or eyes
- Sharp side or back pain with burning urination
- Sudden intense skin reactions
- Very high blood sugar symptoms
- Severe allergic reactions (difficulty breathing, swelling, hives)
Important Warnings
Before taking Norvir, it’s essential to discuss your complete medical history and current medications with your doctor to ensure safe treatment.
Who Should Not Take Norvir
Do not take Norvir if you are allergic to ritonavir or any of the ingredients listed. Children younger than 12 years should not take this medicine.
Medical Conditions to Discuss
Tell your doctor if you have diabetes, liver problems, heart problems (such as irregular heartbeat), high cholesterol or triglycerides, pancreas problems, or haemophilia (bleeding disorder).
Pregnancy and Breastfeeding
Make sure your doctor knows if you are pregnant, planning to become pregnant, breastfeeding, or intend to breastfeed. Call your doctor immediately if you become pregnant while taking Norvir.
Emergency: Go to the nearest hospital immediately if you experience sudden intense skin reactions, allergic reaction symptoms (difficulty breathing, face/lip/tongue swelling, hives), or very high blood sugar levels.
Drug Interactions
Norvir can interact with many medications, either increasing or decreasing their effects. Some combinations can be dangerous and must be avoided completely.
Critical: Many medications are completely prohibited with Norvir. Always tell your doctor about ALL medicines, vitamins, and supplements you take.
- Alfuzosin (prostate medication)
- Ranolazine (angina medication)
- Heart rhythm medications (amiodarone, flecainide, propafenone)
- Antihistamines (astemizole, terfenadine)
- Cholesterol medications (lovastatin, simvastatin)
- Sleep medications (midazolam, triazolam, zolpidem)
- Pain medications (pethidine, dextropropoxyphene)
- St John’s wort
- Antifungal medications
- Blood thinners
- Antidepressants
- Contraceptive pills
Alcohol & Driving
Exercise caution when driving or operating machinery until you understand how Norvir affects you personally.
Alcohol
There is no specific information available about the effects of taking Norvir with alcohol. Discuss alcohol consumption with your doctor.
Driving and Operating Machinery
Be careful before driving or using machines or tools until you know how Norvir affects you. There is no specific information on Norvir’s effect on driving ability, but some side effects like dizziness could impair your ability to drive safely.
Storage
Store Norvir in a cool, dry place away from moisture, heat, and sunlight. Do not store in the bathroom, near a sink, in the car, or on window sills. Keep in the original bottle until time to take your dose. Keep away from children. Take expired or unwanted medicine to any pharmacy for safe disposal.
Overdose Information
If you take too much Norvir, immediately phone the Poisons Information Centre (13 11 26), contact your doctor, or go to the Emergency Department at your nearest hospital. Do this even if there are no signs of discomfort or poisoning.
Frequently Asked Questions
Norvir works as part of combination HIV therapy. Your doctor will monitor your progress through regular blood tests to determine how well the treatment is working for you.
The medication guide doesn’t specify food requirements. Follow your doctor’s instructions and ask them about taking Norvir with or without food.
Do not stop taking Norvir suddenly or change the dose without checking with your doctor first. Stopping HIV medication can allow the virus to multiply and become resistant to treatment.
There is no specific information available about the effects of taking Norvir with alcohol. You should discuss alcohol consumption with your doctor.
If you miss a dose and it’s nearly time for your next dose, skip the missed dose and take your next dose at the usual time. Never take a double dose to make up for a missed dose.
Yes, keep all your appointments including blood tests. Some side effects can be detected in blood tests before you have symptoms. Tell the clinic you’re taking Norvir when having blood tests.
Yes, if you have diabetes, monitor your blood sugar levels regularly while taking Norvir. Contact your doctor immediately if your blood sugar levels are no longer controlled or if you develop diabetes symptoms like excessive thirst, frequent urination, or blurred vision.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.