Cobicistat - oral
Cobicistat - oral
This drug is used to increase ("boost") the levels of certain HIV protease inhibitors (atazanavir and darunavir). This helps them work better to help control HIV infection.
Cobicistat is not a cure for HIV infection. To decrease your risk of spreading HIV disease to others, do all of the following: (1) continue to take all HIV medications exactly as prescribed by your doctor, (2) always use an effective barrier method (latex or polyurethane condoms/dental dams) during all sexual activity, and (3) do not share personal items (such as needles/syringes, toothbrushes, and razors) that may have contacted blood or other body fluids. Consult your doctor or pharmacist for more details.
Read the Patient Information Leaflet if available from your pharmacist before you start taking cobicistat and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
Take this medication by mouth with food as directed by your doctor, usually once daily. Take cobicistat at the same time as your HIV protease inhibitor.
It is very important to continue taking this medication (and other HIV medications) exactly as prescribed by your doctor. Do not skip any doses.
This medication works best when the amount of drug in your body is kept at a constant level. Therefore, take this drug at evenly spaced intervals. To help you remember, take it at the same time each day.
Do not take more or less of this drug than prescribed or stop taking it (or other HIV medicines) even for a short time unless directed to do so by your doctor. Doing so may cause the amount of virus to increase, make the infection more difficult to treat (resistant), or worsen side effects.
Nausea may occur. If this persists or worsens, tell your doctor or pharmacist promptly.
As your immune system gets stronger, it can begin to fight off infections you already had, possibly causing disease symptoms to come back. You could also have symptoms if your immune system becomes overactive. This reaction may happen at any time (soon after starting HIV treatment or many months later). Get medical help right away if you have any serious symptoms, including:
Tell your doctor right away if you have any serious side effects, including:
In the US -
Before taking cobicistat, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of:
This medication is not recommended for use during pregnancy. It may not work well in a pregnant woman. If you become pregnant or think you may be pregnant, tell your doctor right away. Your doctor may change your HIV medications.
It is unknown if this medication passes into breast milk. Because breast milk can transmit HIV, do not breast-feed.
Some products that may interact with this drug include:
This medication can slow down the removal of other medications from your body, which may affect how they work. Examples of affected drugs include certain alpha blockers (such as alfuzosin, tamsulosin), certain benzodiazepines (such as midazolam, triazolam), dronedarone, ergot alkaloids (such as dihydroergotamine, ergotamine), quinidine, pimozide, ranolazine, rivaroxaban, salmeterol, simeprevir, certain drugs to treat erectile dysfunction-ED or pulmonary hypertension (such as avanafil, sildenafil), certain "statin" cholesterol drugs (lovastatin, simvastatin), among others.
Other medications can affect the removal of cobicistat from your body, which may affect how cobicistat works. Examples include certain drugs used to treat seizures (such as carbamazepine, phenobarbital, phenytoin, primidone), enzalutamide, certain HIV NNRTI drugs (such as efavirenz, etravirine, nevirapine), rifampin, St. John's wort, among others.
This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Talk to your doctor about additional or alternative reliable forms of birth control, and always use an effective barrier method (latex or polyurethane condoms/dental dams) during all sexual activity to decrease the risk of spreading HIV to others. Tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your hormonal birth control is not working well.
Do not take this medication with other products that contain cobicistat.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
Do not share this medication with others.
Laboratory and/or medical tests (such as kidney function) may be performed before you start treatment, periodically to monitor your progress, or to check for side effects. Consult your doctor for more details.
Keep all regular medical and laboratory appointments.
If you miss a dose, take it as soon as you remember, unless it is less than 12 hours until the next dose. In that case, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.
Information last revised April 2019.
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