bictegravir/emtricitabine/tenofovir vs rifampin
Side-by-side comparison of bictegravir/emtricitabine/tenofovir and rifampin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
major Known Drug Interaction
Antimycobacterials: rifabutin rifampin , Strong inducer of CYP3Aand P-gp, and inducer of UGT1A1. rifapentine ↓ BIC ↓ TAF Coadministration with rifampin is contraindicated due to the effect of rifampin on the BIC component of BIKTARVY [see Contraindications (4) ] .
Recommendation: Do not take these two medications together. Your doctor will need to find a different antibiotic that does not interfere with your HIV treatment.
Biktarvy
Rifadin
Biktarvy is a complete HIV-1 treatment for adults and children who weigh at least 31 pounds. It combines three medicines into one tablet to help control the virus.
Rifampin is an antibiotic medicine. It fights bacteria in your body to treat infections.
Biktarvy treats Human Immunodeficiency Virus type 1 (HIV-1) in adults and children weighing at least 31 pounds. It can be used if you have never taken HIV medicine before. It can also replace your current HIV medicine if your virus is under control and you have no resistance to Biktarvy's components.
Rifampin treats tuberculosis (TB) and helps eliminate the bacteria that cause meningitis from your nose and throat. It is important to use rifampin only for infections that are proven or strongly suspected to be caused by bacteria. This helps to prevent bacteria from becoming resistant to the medicine.
Biktarvy contains three drugs that each block HIV in different ways. Bictegravir stops HIV from inserting its DNA into your cells. Emtricitabine and tenofovir alafenamide interfere with an enzyme HIV needs to make copies of itself.
Rifampin works by stopping bacteria from growing and multiplying. It does this by blocking a key enzyme that the bacteria need to make proteins. This helps your body fight off the infection.
- • Diarrhea
- • Nausea
- • Headache
- • Heartburn
- • Upset stomach
- • Loss of appetite
- • Nausea
- • Vomiting
No adverse event reports.
- Drug Interaction 970
- Drug Reaction With Eosinophilia And Systemic Symptoms 727
- Nausea 628
- Condition Aggravated 550
- Pyrexia 541
If you have both HIV and hepatitis B, stopping Biktarvy can cause your hepatitis B to suddenly get worse. Your doctor will need to monitor your liver closely for several months after you stop taking Biktarvy. You may need to take medicine for hepatitis B.
Rifampin can cause liver problems. Tell your doctor right away if you have yellowing of the skin or eyes, dark urine, or stomach pain. Rifampin can also cause blood problems. Tell your doctor if you have unusual bleeding or bruising.
There is a pregnancy registry to track outcomes in women who take Biktarvy during pregnancy. Talk to your doctor about the risks and benefits of taking Biktarvy if you are pregnant or planning to become pregnant. There is not enough data to assess the risk of major birth defects.
Tell your doctor if you are pregnant or plan to become pregnant. Rifampin can make birth control pills less effective, so use other forms of birth control. Talk to your doctor if you are breastfeeding.
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How to Read This bictegravir/emtricitabine/tenofovir vs rifampin Comparison
bictegravir/emtricitabine/tenofovir is classified in the Integrase Inhibitor / NRTI Combination drug class, while rifampin sits within the Rifamycin Antibiotic class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, bictegravir/emtricitabine/tenofovir has 0 submissions while rifampin has 3,416. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known major interaction flagged in FDA labeling, attributed to rifampin speeds up how fast your body breaks down the hiv medicine, which makes the hiv medicine less effective. this can cause the hiv virus to become harder to treat.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between bictegravir/emtricitabine/tenofovir and rifampin - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.