Drug Interaction Report

By reducing the acidity level in the stomach, magnesium oxide can decrease the absorption and blood levels of rilpivirine and make the medication less effective against HIV. To minimize the risk of interaction, magnesium oxide should be taken at least 2 hours before or 4 hours after you take rilpivirine. Talk to your doctor or pharmacist if you have questions on how to take this or other medications you are prescribed. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Food significantly increases the absorption of rilpivirine. You should take each dose of rilpivirine with a meal. Taking it on an empty stomach may lead to inadequate blood levels and reduced effectiveness of the medication. Grapefruit juice can also increase the absorption of rilpivirine and should preferably be avoided.