saquinavir - oral, Invirase (cont.)
PRECAUTIONS: Before taking saquinavir, 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: lipid problems (high cholesterol or triglycerides/fats), diabetes, hemophilia, liver problems.Saquinavir may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can infrequently result in serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away.The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may cause QT prolongation. Before using saquinavir, tell your doctor or pharmacist of all the drugs you take and if you have any of the following conditions: certain heart problems (heart failure, slow heartbeat, QT prolongation in the EKG), family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death).Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using saquinavir safely.Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).Older adults may be more sensitive to the side effects of this drug, especially QT prolongation (see above).Tell your doctor if you are pregnant before using this medication.It is unknown if this medication passes into breast milk. Because breast milk can transmit HIV, do not breast-feed.
DRUG INTERACTIONS: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.Some products that may interact with this drug include: trazodone, certain benzodiazepines (midazolam, triazolam), ergot alkaloids (such as dihydroergotamine, ergonovine, ergotamine, methylergonovine), garlic supplements, ranolazine, rifamycins (such as rifampin, rifapentine), certain "statin" cholesterol drugs (simvastatin, lovastatin), other HIV medications (such as darunavir, tipranavir), St. John's wort.Many drugs besides saquinavir may affect the heart rhythm (QT prolongation), including quinidine, pimozide, propafenone, cisapride, amiodarone, dofetilide, flecainide, salmeterol, among others.Other medications can affect the removal of saquinavir from your body, which may affect how saquinavir works. Examples include other HIV drugs (such as indinavir, nelfinavir), among others.Saquinavir can slow down the removal of other medications from your body, which may affect how they work. Examples of affected drugs include lurasidone, drugs to treat erectile dysfunction-ED or pulmonary hypertension (such as sildenafil, vardenafil, tadalafil), 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.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
Back to Medications Index