bictegravir/emtricitabine/tenofovir vs valacyclovir
Side-by-side comparison of bictegravir/emtricitabine/tenofovir and valacyclovir. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
Some examples of drugs that are eliminated by active tubular secretion include, but are not limited to, acyclovir, cidofovir, ganciclovir, valacyclovir, valganciclovir, aminoglycosides (e.g., gentamicin), and high-dose or multiple NSAIDs [see Warnings and Precautions (5.4) ] .
Recommendation: Your doctor should monitor your kidney function closely while you are taking both medications.
Biktarvy
Valtrex
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.
Valacyclovir is an antiviral medicine. It is used to treat infections caused by certain viruses.
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.
Valacyclovir treats cold sores, genital herpes, and shingles. For genital herpes, it can treat initial outbreaks, repeat outbreaks, and also prevent outbreaks. It can also lower the chance of spreading genital herpes to others.
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.
Valacyclovir stops the virus from growing and spreading. It does this by blocking a key enzyme the virus needs to reproduce. This helps your body fight off the infection.
- • Diarrhea
- • Nausea
- • Headache
- • Headache
- • Nausea
- • Abdominal pain
No adverse event reports.
- Feeling very tired 2,294
- Loose, watery stools 2,120
- Feeling sick to your stomach 1,838
- Fever with low white blood cell count 1,545
- Fever 1,490
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.
Valacyclovir can cause serious problems like TTP/HUS, which is a blood disorder. This is more likely in people with advanced HIV or who have had bone marrow or kidney transplants, especially if they take high doses (8 grams per day). It can also cause kidney failure, especially in older adults or people with kidney problems. Rarely, it can cause confusion, hallucinations, or agitation. Stop taking this medicine and contact your doctor immediately if you experience any of these side effects.
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. Studies haven't shown a risk of major birth defects, but there isn't enough data to be sure about miscarriage or other problems. Talk to your doctor about the risks and benefits.
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How to Read This bictegravir/emtricitabine/tenofovir vs valacyclovir Comparison
bictegravir/emtricitabine/tenofovir is classified in the Integrase Inhibitor / NRTI Combination drug class, while valacyclovir sits within the Antiviral 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 valacyclovir has 9,287. 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 minor interaction flagged in FDA labeling, attributed to both of these drugs are removed from the body through the same pathway in the kidneys, which may cause them to compete for exit.. 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 valacyclovir - 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.