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Sustiva (Efavirenz)

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Sustiva is used to treat HIV infection in combination with other anti-HIV medications. If Sustiva is the only drug you take to treat HIV infection, it may stop working.

Other names for this medication:
Adiva, Avifanz, Aviranz, Ciplaefavir, Efatec, Efavir, Efavirenz, Efavirenzum, Filginase, Stocrin, Stocrit, Sulfinav, Virorrever, Virzen, Efcure, Efferven, Efamat, Viranz, Effahope, Evirenz, Estiva

Similar Products:
Combivir, Epivir, Retrovir, Zerit, Viramune, Viramune XR, Rescriptor, Delavirdine, Nevirapine, Edurant, Truvada, Atripla, Norvir , Isentress, Prezista, Reyataz, Complera, Epzicom, Stribild, Epivir, Kaletra, Viread, Intelence, lamivudine, Ziagen, Ritonavir, Abacavir , Raltegravir, Tenofovir, Tivicay, Crixivan

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Also known as:  Efavirenz.


Sustiva is used to treat HIV infection in combination with other anti-HIV medications. If Sustiva is the only drug you take to treat HIV infection, it may stop working.

Sustiva is an oral medication that is used for the treatment of infections with the human immunodeficiency virus (HIV). It is similar to nevirapine (Viramune) and delavirdine (Rescriptor).

Sustiva is also known as Efavirenz, Stocrin.

Sustiva is in a class of drugs called reverse transcriptase inhibitors which also includes zalcitabine (Hivid), zidovudine (Retrovir), didanosine (Videx), and lamivudine (Epivir). During infection with HIV, the HIV virus multiplies within the body's cells. The newly-formed viruses then are released from the cells and spread throughout the body where they infect other cells. In this manner, the infection continually spreads to new, uninfected cells that the body is continually producing, and HIV infection is perpetuated. When producing new viruses, the HIV virus must manufacture new DNA for each virus. Reverse transcriptase is the enzyme that the virus uses to form this new DNA. Sustiva directly inhibits the activity of reverse transcriptase and blocks the production of DNA and new viruses. Unlike zidovudine, efavirenz does not need to be converted to an active form. Sustiva does not kill existing HIV virus and it is not a cure for HIV.


Take this drug by mouth, generally once daily as directed. Take on an empty stomach with a glass of water. Taking Sustiva with food, especially a high-fat meal can lead to increased blood levels of the drug and increase your risk of having side effects.

Best taken at bedtime during the first month of use. Using this drug regularly at bedtime may decrease certain side effects. Use this medication regularly in order to get the most benefit from it. To help you remember, use it at the same time each day. Do not take more or less of this drug than prescribed, or stop taking it unless directed to do so by your doctor. Read the patient information leaflet provided by your pharmacist.

If you want to achieve most effective results do not stop taking Sustiva suddenly.


If you overdose Sustiva and you don't feel good you should visit your doctor or health care provider immediately.


Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F) away from moisture and heat. Throw away any unused medicine after the expiration date. Keep out of the reach of children.

Side effects

The most common side effects associated with Sustiva are:

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Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.


Do not take Sustiva if you are allergic to Sustiva components.

Do not take Sustiva if you are pregnant, planning to become pregnant, or are breast-feeding. It is unknown if Sustiva is excreted in breast milk. Avoid breast-feeding because breast milk can transmit HIV.

Be careful with Sustiva if you have mental disorders, liver disease (such as hepatitis).

Avoid machine driving.

Limit alcohol intake, as it may intensify drug side effects.

It can be dangerous to stop Sustiva taking suddenly.

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HIV therapy has evolved rapidly since the 1990s; the arrival of more potent and safer antiretroviral drugs has transformed HIV infection into a chronic condition, which is rarely fatal. Non-nucleoside reverse transcriptase inhibitors (NNRTIs) are frequently used as a third agent - as part of a triple-combination therapy. Side effects and low barriers to resistance have been the major drawbacks of NNRTIs. Rilpivirine (RPV) is a next-generation non-nucleoside analogue, the unique features of which might favor choosing this drug over other NNRTIs. RPV is the latest NNRTI approved for the treatment of HIV infection. Along with its high efficacy and good safety profile, data on pharmacokinetics and drug interactions make RPV particularly attractive.

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African and Asian cohort studies have demonstrated the feasibility and efficacy of HAART in resource-poor settings. The long-term virological outcome and clinico-immunological criteria of success remain important questions. We report the outcomes at 24 months of antiretroviral therapy (ART) in patients treated in a Médecins Sans Frontières/Ministry of Health programme in Cambodia.

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The presence of K103N mutant virus in plasma above 2000 copies/ml prior to therapy in treatment-naive individuals correlated with increased risk of virologic failure of these efavirenz-containing triple-drug regimens.

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From the results it is proved that this method is less time consuming, inexpensive, and reproducible. Drug-release studies indicate, PEGylated 5.0 G PAMAM-EFV dendrimers have shown prolonged drug-release property.

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The antiretroviral drug efavirenz (EFV) and the antimalarial artemisinin-based combination therapy artemether-lumefantrine (AL) are commonly co-administered to treat HIV and malaria. EFV is a known inducer of cytochrome P450 3A4, which converts artemether to dihydroartemisinin (DHA) that is also active and metabolizes longer acting lumefantrine (LR). A study in healthy volunteers was completed to address the concern that EFV impacts AL pharmacokinetics (PKs).

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Twenty years following the description of the broad-spectrum antiviral activity of S-9-(3-hydroxy-2-phosphonylmethoxypropyl)adenine [(S)-HPMPA] [De Clercq E, Holý A, Rosenberg I, Sakuma T, Balzarini J, Maudgal PC. A novel selective broad-spectrum anti-DNA virus agent. Nature 1986;323:464-7], the acyclic nucleoside phosphonates have acquired a prominent therapeutic position: (i) cidofovir in the treatment of papilloma-, herpes-, adeno- and poxvirus infections, (ii) adefovir in the treatment of chronic hepatitis B virus (HBV) infections, and (iii) tenofovir in the treatment of human immunodeficiency virus (HIV) infections (AIDS). Although formally approved only for the treatment of human cytomegalovirus (HCMV) retinitis in AIDS patients, cidofovir has been used successfully in the treatment of various other DNA virus infections, particularly human papilloma virus (HPV)-associated lesions. Adefovir dipivoxil has become a standard therapy for HBV infections, especially when resistant to lamivudine. Tenofovir disoproxil fumarate (TDF) is the corner stone of the triple-drug (TDF, emtricitabine, and efavirenz) combination therapy for AIDS, and TDF, alone or combined with emtricitabine may in the future evolve to the standard therapy of hepatitis B. Guided by the results obtained with tenofovir in the prevention of parenteral, intravaginal and perinatal infections with simian immunodeficiency virus in monkeys, and the safety profile gathered with TDF in humans with AIDS over the past 5 years since TDF was licensed for clinical use, it should be further pursued for the pre- and post-exposure prophylaxis of HIV infections in humans. Meanwhile, new classes of both acyclic (i.e. PMPO-DAPy, PMEO-DAPy, HPMPO-DAPy) and cyclic nucleoside phosphonates (i.e. PMDTA, PMDTT, GS9148) have been accredited with an antiviral potency and selectivity similar to those of cidofovir, adefovir and/or tenofovir.

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Rash was more frequent with FD nevirapine, but 88% had no clinical toxicity; elevated AST or ALT levels were transient and resolved spontaneously, suggesting that routine laboratory monitoring has limited value. Dual pediatric stavudine-lamivudine minitablets are preferred for safe and simple DE; if unavailable, initiating FD Triomune requires timely review for rash, which could be managed by temporary reduction to half-dose Triomune or efavirenz substitution.

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Safety and tolerance of efavirenz is good in most patients, even in a population with a high rate of IVDU. The most common AEs are CNS disturbances; they are not severe and rarely lead to TI.

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The median reduction of the viral load for the total study population was 1.9 log10 (0.8 - 4.7), 2.3 log(10) (0.5 - 4.7) and 2.6 log(10) (0-4.7) after 12, 24 and 52 weeks, respectively. After 24 weeks 7/15 children and after 52 weeks 9/15 patients had reductions of the VL below the detection limit. The median increase of CD4-cells in the study population during the treatment period were 104 cells/microl (189-969), 220 cells/microl (170-831) and 321 cells/ml (162-574) after 12, 24 and 52 weeks, respectively.

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Despite the high costs, use of MD-ARVs, such as HAART, for PMTCT offer societal savings because fewer perinatally acquired infections are anticipated to require treatment.

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To encapsulate efavirenz (EFV) within poly(epsilon-caprolactone) (PCL) nanoparticles (NPs) and compare the oral pharmacokinetics with that of EFV-loaded micelles and pure EFV NPs.

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The Cox proportional hazards model or its discrete time analogue, the logistic failure time model, posit highly restrictive parametric models and attempt to estimate parameters which are specific to the model proposed. These methods are typically implemented when assessing effect modification in survival analyses despite their flaws. The targeted maximum likelihood estimation (TMLE) methodology is more robust than the methods typically implemented and allows practitioners to estimate parameters that directly answer the question of interest. TMLE will be used in this paper to estimate two newly proposed parameters of interest that quantify effect modification in the time to event setting. These methods are then applied to the Tshepo study to assess if either gender or baseline CD4 level modify the effect of two cART therapies of interest, efavirenz (EFV) and nevirapine (NVP), on the progression of HIV. The results show that women tend to have more favorable outcomes using EFV while males tend to have more favorable outcomes with NVP. Furthermore, EFV tends to be favorable compared to NVP for individuals at high CD4 levels.

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overdose sustiva 2016-09-09

A raltegravir-based therapy is safe and effective in HIV patients undergoing antineoplastic chemotherapy, regardless of the type of tumour, and type and duration of chemotherapy. Pharmacokinetic data show adequate raltegravir levels. Altace 50 Mg

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There are now exactly 20 anti-HIV drugs licenced (approved) for clinical use, and > 30 anti-HIV compounds under (pre)clinical development. The licensed anti-HIV drugs fall into five categories: nucleoside reverse transcriptase inhibitors (NRTIs: zidovudine, didanosine, zalcitabine, stavudine, lamivudine, abacavir and Cytoxan Oral Medication emtricitabine); nucleotide reverse transcriptase inhibitors (NtRTIs: tenofovir disoproxil fumarate); non-nucleoside reverse transcriptase inhibitors (NNRTIs: nevirapine, delavirdine and efavirenz); protease inhibitors (PIs: saquinavir, indinavir, ritonavir, nelfinavir, amprenavir, lopinavir, atazanavir and fosamprenavir); and fusion inhibitors (FIs: enfuvirtide). The compounds that are currently under clinical (Phase I, II or III) or preclinical investigation are either targeted at the same specific viral proteins as the licensed compounds (i.e., reverse transcriptase [NRTIs: PSI-5004, (-)-dOTC, DPC-817, elvucitabine, alovudine, MIV-210, amdoxovir, DOT; NNRTIs: thiocarboxanilide, UC-781, capravirine, dapivirine, etravirine, rilpivirine], protease [PIs: tipranavir, TMC-114]) or other specific viral proteins (i.e., gp120: cyanovirin N; attachment inhibitors: AIs, such as BMS-488043; integrase: L-870,812, PDPV-165; capsid proteins: PA-457, alpha-HCG); or cellular proteins (CD4 downmodulators: CADAs; CXCR4 antagonists: AMD-070, CS-3955; CCR5 antagonists: TAK-220, SCH-D, AK-602, UK-427857). Combination therapy is likely to remain the gold standard for the treatment of AIDS so as to maximise potency, minimise toxicity and diminish the risk for resistance development. Ideally, pill burden should be reduced to once-daily dosing so as to optimise the patient's compliance and reduce the treatment costs.

sustiva missed dose 2015-07-22

From the French Hospital Database on HIV, we selected 439 patients with undetectable viral load (VL) on a first-line boosted PI-containing cART regimen who switched to a PI-free combination including efavirenz, nevirapine or abacavir. Each of these patients was matched with three patients who continued to take their first-line cART regimen, on the basis of gender, age, CD4 cell count, VL, date of cART initiation and the duration of VL undetectability. Time to virological failure (VF) was analysed with Kaplan-Meier curves Accutane Dosage Calculator and Cox models.

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Switching from a virologically successful first-line boosted PI-containing cART regimen to a non-nucleoside reverse transcriptase inhibitor-containing cART regimen containing either efavirenz or nevirapine is virologically Duphaston 1 Mg safe, while switching to abacavir-containing cART should be avoided.

sustiva medication 2017-01-08

Surface plasmon resonance biosensor technique was used to study the binding of Moloney murine leukemia virus reverse transcriptase without RNase H domain (MMLV RT-) with DNA in the absence and in Celexa Alcohol the presence of inhibitors. Different DNA substrates, including single-stranded DNA (ssDNA), DNA template-primer (T-P) duplex and gapped DNA, were immobilized on the biosensor chip surface using streptavidin-biotin, and MMLV RT(-)-DNA binding kinetics were analyzed by different models. MMLV RT-; could bind with ssDNA and the binding was involved in conformation change. MMLV RT-; binding DNA T-P duplex and gapped DNA could be analyzed using the simple 1:1 Langmuir model. The lack of RNase H domain reduced the affinity between MMLV RT-; and T-P duplex. The effects of RT inhibitors, including efavirenz, nevirapine and quercetin, on the interaction between MMLV RT-; and gapped DNA were analyzed according to recovered kinetics parameters. Efavirenz slightly interfered with the binding between RT and DNA and the affinity constant in the presence of the inhibitor (K(A) = 1.21 x 10(6) M(-1)) was lower than in the absence of the inhibitor (KA = 4.61 x 10(6) M(-1)). Nevirapine induced relatively tight binding between RT and DNA and the affinity constant in the presence of the inhibitor (K(A) = 1.47 x 10(7) M(-1)) was approximately three folds higher than without nevirapine, mainly due to rapid association and slow dissociation. Quercetin, a flavonoid originating from plant which has previously shown strong inhibition of the activity of RT, was found to have minimal effect on the RT-DNA binding.

sustiva mg 2015-10-28

Non-high density lipoprotein (HDL) cholesterol levels increase with increasing exposure to either PI- or NNRTI-based therapy, HDL cholesterol levels increase and triglyceride levels decrease with increasing exposure to NNRTI-based therapy, whereas triglyceride levels increase with increasing exposure to PI-based therapy. Between NNRTI-based therapies, there is a slight difference Luvox Medication in triglyceride levels, which tend to increase with increasing exposure to efavirenz and to decrease with increasing exposure to nevirapine. Of the three common PI-based therapies, nelfinavir appears to have a relatively favourable lipid profile, with little change with increasing exposure. Of the other two PI therapies, lopinavir with ritonavir has a more favourable profile than indinavir with ritonavir, with smaller increases in both non-HDL cholesterol and triglycerides and an increase in HDL cholesterol. Increasing exposure to abacavir is associated with a decrease in the level of triglycerides.

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Lipoatrophy and/or central fat gain are observed frequently in patients on antiretroviral therapy (ART). Both are Atarax With Alcohol assumed to be antiretroviral adverse drug reactions.

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In spite of indisputable benefits, the use of antiretroviral therapy is associated with multiple metabolic complications. Switching to simpler regimens might maintain viral suppression, improve metabolic side effects, and provide insight into the pathogenesis of these complications. Our objective was to carefully characterize the virological and metabolic effects of switching from a successful protease inhibitor (PI)-based antiretroviral regimen to a nonnucleoside reverse transcriptase inhibitor (NNRTI)-based regimen with nevirapine (NVP). Forty patients, taking their first successful (less than 40 HIV RNA copies/ Celexa Reviews 2012 ml) PI-based regimen, switched their PI to NVP. If patients did not tolerate NVP, substitution with efavirenz was allowed. The duration of the study was 48 weeks. At 12 weeks intervals subjects had multiple virological and metabolic parameters including glucose, insulin, C-peptide, glucagon, proinsulin, blood lipids, and lipoproteins. A subgroup of 18 patients also had body composition evaluations with DEXA scans and MRIs of the abdomen and the thighs as well as insulin tolerance tests. Ninety-five percent of the patients maintained viral suppression (95% CI 88-100%); only one patient failed and another developed hepatitis. There were improvements in glucose (decreased fasting glucose, insulin, and improved insulin tolerance) and lipid metabolism (decreased triglycerides and increased HDL), but no changes in body composition and bone mineral density. Our study supports a pathogenic role for PIs in the development of hypertriglyceridemia and insulin resistance, but a more limited role in the fat redistribution syndrome.

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The aim of the study was to investigate Cipro 6 Pills symptoms of long-term central nervous system (CNS) toxicity in HIV-positive patients treated with efavirenz (EFV).

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In STOP 1 five patients still had efavirenz present (median t(1/2)=148.4 h) 3 weeks after stopping. In STOP 2, 15/20 patients had a viral load (VL) of <40 copies/mL and 3/20 Tenoretic Dosage Forms patients had a reduction in VL by 4 weeks. Six patients opted not to stop lopinavir/ritonavir and still had <40 copies/mL at week 8. Week 1-4 median trough lopinavir concentrations were well above the EC(95). Six patients still had detectable concentrations of original cART persisting for >1 week after stopping. No patients developed new resistance mutations.

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Issues discussed at the 39th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC) are presented. A presentation by Dr. Anthony Fauci of the National Institute of Health (NIH) on the control of HIV, particularly Alatent pools@ of HIV-infected CD4 cells, is described. Fauci recommends achieving adequate control by having a competent immune system, enhancing the weakened immune system, and purging the reservoir of latently-infected cells. In addition, a presentation on treatment failure by Dr. John Mellors is also discussed in detail. Mellors' suggestions include checking drug levels, studying the rate of progression, and considering prior drug experience, before resorting to salvage therapy. Results of trials featuring efavirenz, abacavir, and Saquinavir are described. Summaries of other topics addressed at ICAAC, including a new class of drugs called fusion inhibitors, are provided.

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A liquid chromatography-tandem mass spectrometry assay for simultaneous determination of the plasma concentration of 11 antiretroviral agents (nevirapine, indinavir, atazanavir, amprenavir, saquinavir, ritonavir, lopinavir, efavirenz, tipranavir, darunavir and maraviroc) has been developed. Sample pre-treatment is limited to protein precipitation with a mixture of methanol and zinc sulfate. After centrifugation the supernatant is injected in the chromatographic system, which consists of on-line solid phase extraction followed by separation on a phenyl-hexyl column. This method, with its simple sample preparation provides sensitive, accurate and precise quantification of the plasma concentration of antiretroviral drugs and can be used for therapeutic drug monitoring in patients infected with HIV.

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The effect of CYP2B6 variation on response to its substrates, nonnucleoside reverse transcriptase inhibitors (NNRTIs), was explored in the Women's Interagency HIV Study.

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A 25-year-old HIV-infected woman participating in a study of the effects of hormonal contraception on HIV disease progression was started on antiretroviral therapy-Combivir & Nevirapine (NVP) on May 27, 2004. NVP was 200mg daily initially for two weeks to be increased to 200mg bid thereafter. On day twelve, she presented with a mild skin rash on the trunk, purulent conjunctivitis, pharyngitis and fever. She was treated symptomatically and sent home. The following day she returned with a generalized erythematous eruption. She was admitted to JCRC (Joint Clinical and Research Centre) on June 14 and was diagnosed with Stevens - Johnson syndrome (SJS). Antiretroviral therapy was stopped. By July 05, 2004, she had improved and was discharged. After recovery she was restarted on Combivir and Efavirenz and is subsequently doing well on this regimen.

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Incomplete adherence to modern HAART over time was strongly associated with increased mortality, and patients on efavirenz-based NNRTI therapies were particularly at a higher risk if nonadherent. These results highlight the need to develop further strategies to help sustain high levels of adherence on a long-term basis.