Ritonavir (By mouth)

There may be other brand names for this medicine.

This medicine is not right for everyone. Do not use it if you had an allergic reaction to ritonavir.

Your doctor will tell you how much medicine to use. Do not use more than directed.
It is best to take this medicine with food or milk.
Capsule or Tablet: Swallow whole. Do not break, crush, or chew it.
Oral liquid: Shake well just before each use. Measure the medicine with a marked measuring spoon or medicine cup. You may mix the oral liquid with chocolate milk or nutritional drinks to make it taste better. Drink this medicine within 1 hour of mixing.
Do not stop using this medicine without checking first with your doctor. If you stop the medicine, even briefly, the virus may become harder to treat. Contact your doctor or pharmacist when your supply is running low so you do not run out.
Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.
Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.
Capsules: Store in the refrigerator or at room temperature in a closed container. If stored at room temperature, use the medicine within 30 days. Keep away from heat and direct light.
Liquid or tablets: Store in a closed container at room temperature, away from heat and direct light. Do not refrigerate.

Do not use this medicine if you are also using alfuzosin, amiodarone, cisapride, colchicine, dihydroergotamine, dronedarone, ergotamine, flecainide, lovastatin, lurasidone, methylergonovine, oral midazolam, pimozide, propafenone, quinidine, sildenafil, simvastatin, St John's wort, triazolam, or voriconazole.
Many other drugs can interact with ritonavir. Make sure your doctor knows about all other medicines you are using.

Tell your doctor if you are pregnant or if you have kidney disease, liver disease (including hepatitis), diabetes, heart disease, heart rhythm problems (such as PR prolongation), high cholesterol, or hemophilia.
Do not breastfeed. You can spread HIV or AIDS to your baby through your breast milk.
This medicine may cause the following problems:
- Liver problems
- Pancreatitis
- Serious skin reactions
- Changes in heart rhythm, such as PR prolongation
- High cholesterol or triglycerides
- High blood sugar levels, a problem that could become permanent
Your immune system may get stronger when you start taking an HIV medicine. Infections that were hidden in your body, such as pneumonia or tuberculosis, might start to have symptoms. Tell your doctor right away if you notice any changes in your health.
This medicine will not keep you from giving HIV to others. Always practice safe sex, even if your partner also has HIV. Do not share needles or other items that may have blood or body fluids on them.
The liquid form of this medicine contains alcohol.
Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Keep all medicine out of the reach of children. Never share your medicine with anyone.

Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
Blistering, peeling, red skin rash
Dark urine or pale stools, loss of appetite, stomach pain, yellow skin or eyes
Fainting, dizziness, lightheadedness
Fast, slow, or uneven heartbeat, chest pain
Increased hunger or thirst, change in how much or how often you urinate, unusual weight loss
Sudden and severe stomach pain, nausea, vomiting, fever

Last Updated: 1/27/2017