Dolutegravir Sodium And Lamivudine

FDA Drug Information • Also known as: Dovato

Brand Names: Dovato
Drug Class: Hepatitis B Virus Nucleoside Analog Reverse Transcriptase Inhibitor [EPC], Human Immunodeficiency Virus Nucleoside Analog Reverse Transcriptase Inhibitor [EPC]
Route: ORAL
Dosage Form: TABLET, FILM COATED
Product Type: HUMAN PRESCRIPTION DRUG

⚠ Boxed Warning (Black Box)

WARNING: PATIENTS CO-INFECTED WITH HEPATITIS B VIRUS (HBV) AND HUMAN IMMUNODEFICIENCY VIRUS (HIV-1): EMERGENCE OF LAMIVUDINE-RESISTANT HBV AND EXACERBATIONS OF HBV All patients with HIV-1 should be tested for the presence of HBV prior to or when initiating DOVATO. Emergence of lamivudine-resistant HBV variants associated with lamivudine-containing antiretroviral regimens has been reported. If DOVATO is used in patients co-infected with HIV-1 and HBV, additional treatment should be considered for appropriate treatment of chronic HBV; otherwise, consider an alternative regimen. Severe acute exacerbations of HBV have been reported in patients who are co-infected with HIV-1 and HBV and have discontinued lamivudine, a component of DOVATO. Closely monitor hepatic function in these patients and, if appropriate, initiate anti-HBV treatment [see Warnings and Precautions ( 5.1 )] . WARNING: PATIENTS CO-INFECTED WITH HEPATITIS B VIRUS (HBV) AND HUMAN IMMUNODEFICIENCY VIRUS (HIV-1): EMERGENCE OF LAMIVUDINE-RESISTANT HBV AND EXACERBATIONS OF HBV See full prescribing information for complete boxed warning.

All patients with HIV-1 should be tested for the presence of HBV prior to or when initiating DOVATO. Emergence of lamivudine-resistant HBV variants associated with lamivudine-containing antiretroviral regimens has been reported. If DOVATO is used in patients co-infected with HIV-1 and HBV, additional treatment should be considered for appropriate treatment of chronic HBV; otherwise, consider an alternative regimen.

Severe acute exacerbations of HBV have been reported in patients who are co-infected with HIV-1 and HBV and have discontinued lamivudine, a component of DOVATO. Closely monitor hepatic function in these patients and, if appropriate, initiate anti-HBV treatment. ( 5.1 )

Description

11 DESCRIPTION DOVATO is a fixed-dose combination tablet containing dolutegravir (as dolutegravir sodium), an integrase strand transfer inhibitor (INSTI), and lamivudine (also known as 3TC), a nucleoside analogue reverse transcriptase inhibitor (NRTI). DOVATO tablets are for oral administration. Each film-coated tablet contains the active ingredients 50 mg of dolutegravir (equivalent to 52.6 mg dolutegravir sodium) and 300 mg of lamivudine and the inactive ingredients magnesium stearate, mannitol, microcrystalline cellulose, povidone K29/32, sodium starch glycolate, sodium stearyl fumarate. The tablet film-coating contains the inactive ingredients hypromellose, polyethylene glycol, titanium dioxide. Dolutegravir The chemical name of dolutegravir sodium is sodium (4 R ,12a S )-9-{[(2,4-difluorophenyl)methyl]carbamoyl}-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2 H -pyrido[1',2':4,5]pyrazino[2,1- b ][1,3]oxazin-7-olate. The empirical formula is C 20 H 18 F 2 N 3 NaO 5 , and the molecular weight is 441.36 g/mol. It has the following structural formula: Dolutegravir sodium is a white to light yellow powder and is slightly soluble in water. Lamivudine The chemical name of lamivudine is (2R,cis)-4-amino-1-(2-hydroxymethyl-1,3-oxathiolan-5-yl)-(1H)-pyrimidin-2-one. Lamivudine is the (‑)enantiomer of a dideoxy analogue of cytidine. Lamivudine has also been referred to as (‑)2′,3′-dideoxy, 3′-thiacytidine. It has a molecular formula of C 8 H 11 N 3 O 3 S and a molecular weight of 229.3 g/mol. It has the following structural formula: Lamivudine is a white to off‑white crystalline solid and is soluble in water. Dolutegravir sodium chemical structure Lamivudine chemical structure

What Is Dolutegravir Sodium And Lamivudine Used For?

1 INDICATIONS AND USAGE DOVATO is indicated as a complete regimen for the treatment of HIV-1 infection in adults and adolescents 12 years of age and older and weighing at least 25 kg with no antiretroviral treatment history or to replace the current antiretroviral regimen in those who are virologically suppressed (HIV-1 RNA less than 50 copies/mL) on a stable antiretroviral regimen with no history of treatment failure and no known substitutions associated with resistance to the individual components of DOVATO. DOVATO, a two-drug combination of dolutegravir (integrase strand transfer inhibitor [INSTI]) and lamivudine (nucleoside analogue reverse transcriptase inhibitor [NRTI]) is indicated as a complete regimen for the treatment of HIV-1 infection in adults and adolescents 12 years of age and older and weighing at least 25 kg with no antiretroviral treatment history or to replace the current antiretroviral regimen in those who are virologically suppressed (HIV-1 RNA less than 50 copies/mL) on a stable antiretroviral regimen with no history of treatment failure and no known substitutions associated with resistance to the individual components of DOVATO. ( 1 )

Dosage and Administration

2 DOSAGE AND ADMINISTRATION

Prior to or when initiating DOVATO, test patients for hepatitis B virus (HBV) infection. ( 2.1 )

One tablet taken orally once daily with or without food. ( 2.2 )

The dolutegravir dose (50 mg) in DOVATO is insufficient when coadministered with carbamazepine or rifampin. If DOVATO is coadministered with carbamazepine or rifampin, take one tablet of DOVATO once daily, followed by an additional dolutegravir 50-mg tablet, approximately 12 hours from the dose of DOVATO. ( 2.3 ) 2.1 Testing Prior to or When Initiating Treatment with DOVATO Prior to or when initiating DOVATO, test patients for HBV infection [see Warnings and Precautions ( 5.1 )]. 2.2 Recommended Dosage DOVATO is a fixed-dose combination product containing 50 mg of dolutegravir and 300 mg of lamivudine. The recommended dosage regimen of DOVATO in adults and adolescents 12 years of age and older and weighing at least 25 kg is one tablet taken orally once daily with or without food [see Clinical Pharmacology ( 12.3 )] . 2.3 Recommended Dosage with Certain Coadministered Drugs The dolutegravir dose (50 mg) in DOVATO is insufficient when coadministered with drugs listed in Table 1 that may decrease dolutegravir concentrations; the following dolutegravir dosage regimen is recommended. Table 1. Dosing Recommendations for DOVATO with Coadministered Drugs Coadministered Drug Dosing Recommendation Carbamazepine, rifampin An additional dolutegravir 50-mg tablet, separated by 12 hours from DOVATO, should be taken. 2.4 Not Recommended in Patients with Renal Impairment Because DOVATO is a fixed-dose tablet and cannot be dose adjusted, DOVATO is not recommended in patients with creatinine clearance less than 30 mL/min [see Use in Specific Populations ( 8.6 )] . 2.5 Not Recommended in Patients with Severe Hepatic Impairment DOVATO is not recommended in patients with severe hepatic impairment (Child-Pugh Score C) [see Use in Specific Populations ( 8.7 )] .

Side Effects (Adverse Reactions)

6 ADVERSE REACTIONS The following adverse reactions are discussed in other sections of the labeling:

Patients co-infected with HIV-1 and HBV [see Warnings and Precautions ( 5.1 )]

Hypersensitivity reactions [see Warnings and Precautions ( 5.2 )]

Hepatotoxicity [see Warnings and Precautions ( 5.3 )]

Lactic acidosis and severe hepatomegaly with steatosis [see Warnings and Precautions ( 5.4 )]

Immune reconstitution syndrome [see Warnings and Precautions ( 5.6 )] The most common adverse reactions (all grades) observed in ≥2% (in those receiving DOVATO) were headache, nausea, diarrhea, insomnia, fatigue, and anxiety. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact ViiV Healthcare at 1-877-844-8872 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared with rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. Clinical Trials in Adults with No Antiretroviral Treatment History The safety assessment of DOVATO in HIV-1–infected adults with no antiretroviral treatment history and with a plasma viral load ≤500,000 HIV-1 RNA copies/mL at the screening visit, is based on the pooled Week 144 analyses of data from 2 identical, multicenter, double-blind, controlled trials, GEMINI-1 and GEMINI-2. A total of 1,433 HIV-1–infected adults with no antiretroviral treatment history received either dolutegravir (TIVICAY) 50 mg plus lamivudine (EPIVIR) 300 mg, as a complete regimen once daily, or TIVICAY 50 mg plus fixed-dose combination tenofovir disoproxil fumarate (TDF)/emtricitabine (FTC) (TRUVADA), administered once daily. The rates of adverse events leading to discontinuation in the pooled analysis were 4% of subjects who received TIVICAY plus EPIVIR and 5% in subjects who received TIVICAY plus TRUVADA. The most common adverse events leading to discontinuation were psychiatric disorders: 2% of subjects who received TIVICAY plus EPIVIR and 1% in subjects who received TIVICAY plus TRUVADA. Adverse reactions (all grades) observed in at least 2% of subjects in either treatment arm of the Week 144 pooled analysis from GEMINI-1 and GEMINI-2 trials are provided in Table 2 . The adverse reactions observed for TIVICAY plus EPIVIR in the Week 144 analysis of the pooled data from GEMINI-1 and GEMINI-2 were generally consistent with the adverse reaction profiles and severities for the individual components when administered with other antiretroviral agents. Table 2. Adverse Reactions (All Grades) Reported in ≥2% of Subjects in Any Treatment Group in Adults with No Antiretroviral Treatment History in GEMINI-1 and GEMINI-2 (Week 144 Pooled Analysis) a Fatigue: includes fatigue, asthenia, and malaise. Adverse Reaction TIVICAY plus EPIVIR (n = 716) TIVICAY plus TRUVADA (n = 717) Headache 3% 4% Nausea 2% 6% Diarrhea 2% 3% Insomnia 2% 3% Fatigue a 2% 2% Anxiety 2% 1% Dizziness 1% 2% Adverse reactions of at least Grade 2 occurring in ≥1% of subjects treated with TIVICAY plus EPIVIR were headache, anxiety, suicidal ideation, and insomnia (all at 1%). Less Common Adverse Reactions: The following adverse reactions (all grades) occurred in <2% of subjects receiving dolutegravir plus lamivudine or are from studies described in the prescribing information of the individual components, TIVICAY (dolutegravir) and EPIVIR (lamivudine). Some events have been included because of their seriousness and assessment of potential causal relationship. Blood and Lymphatic Systems Disorders: Anemia, neutropenia, thrombocytopenia. Gastrointestinal Disorders: Abdominal discomfort, abdominal pain, flatulence, upper abdominal pain, vomiting. General: Fever. Hepatobiliary Disorders: Hepatitis. Immune System Disorders: Hypersensitivity, immune reconstitution syndrome. Musculoskeletal Disorders: Myositis. Nervous System Disorders:...

Drug Interactions

7 DRUG INTERACTIONS

DOVATO is a complete regimen for the treatment of HIV-1 infection; therefore, coadministration with other antiretroviral drugs for the treatment of HIV-1 infection is not recommended. ( 7.1 )

Refer to the full prescribing information for important drug interactions with DOVATO. ( 4 , 5.5 , 7 ) 7.1 Coadministration with Other Antiretroviral Drugs DOVATO is a complete regimen for the treatment of HIV-1 infection; therefore, coadministration with other antiretroviral drugs for the treatment of HIV-1 infection is not recommended [see Indications and Usage ( 1 )] . Information regarding potential drug-drug interactions with other antiretroviral drugs is not provided [see Contraindications ( 4 ), Warnings and Precautions ( 5.5 ), Clinical Pharmacology ( 12.3 )]. 7.2 Potential for DOVATO to Affect Other Drugs Dolutegravir, a component of DOVATO, inhibits the renal organic cation transporters (OCT)2 and multidrug and toxin extrusion transporter (MATE)1; thus, it may increase plasma concentrations of drugs eliminated via OCT2 or MATE1 such as dofetilide, dalfampridine, and metformin [see Contraindications ( 4 ), Drug Interactions ( 7.4 ), Clinical Pharmacology ( 12.3 )]. 7.3 Potential for Other Drugs to Affect the Components of DOVATO Dolutegravir is metabolized by uridine diphosphate (UDP)-glucuronosyl transferase (UGT)1A1 with some contribution from cytochrome P450 (CYP)3A. Dolutegravir is also a substrate of UGT1A3, UGT1A9, breast cancer resistance protein (BCRP), and P-glycoprotein (P-gp) in vitro. Drugs that induce those enzymes and transporters may decrease dolutegravir plasma concentrations and reduce the therapeutic effect of DOVATO [see Drug Interactions ( 7.4 ), Clinical Pharmacology ( 12.3 )] . Coadministration of DOVATO and other drugs that inhibit these enzymes may increase dolutegravir plasma concentrations. Coadministration of dolutegravir with polyvalent cation-containing products may lead to decreased absorption of dolutegravir [see Drug Interactions ( 7.4 ), Clinical Pharmacology ( 12.3 )] . 7.4 Established and Other Potentially Significant Drug Interactions No drug interaction studies were conducted with DOVATO. The drug interactions described are based on studies conducted with dolutegravir or lamivudine when administered alone [see Clinical Pharmacology ( 12.3 )] . Information regarding potential drug interactions with DOVATO are provided in Table 5 . These recommendations are based on either drug interaction trials or predicted interactions due to the expected magnitude of interaction and potential for serious adverse events or loss of efficacy [see Contraindications ( 4 ), Clinical Pharmacology ( 12.3 )]. Table 5. Established and Other Potentially Significant Drug Interactions for DOVATO: Alterations in Dose May Be Recommended Based on Drug Interaction Trials or Predicted Interactions ↑ = Increase, ↓ = Decrease. a See Clinical Pharmacology ( 12.3 ) Table 8 or Table 9 for magnitude of interaction....

Contraindications

4 CONTRAINDICATIONS DOVATO is contraindicated in patients:

with prior hypersensitivity reaction to dolutegravir or lamivudine [see Warnings and Precautions ( 5.2 )] .

receiving dofetilide due to the potential for increased dofetilide plasma concentrations and the risk for serious and/or life-threatening events [see Drug Interactions ( 7.2 )] .

Prior hypersensitivity reaction to dolutegravir or lamivudine. ( 4 )

Coadministration with dofetilide. ( 4 )

Pregnancy and Breastfeeding

8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in individuals exposed to DOVATO during pregnancy. Healthcare providers are encouraged to register patients by calling the Antiretroviral Pregnancy Registry (APR) at 1‑800‑258‑4263. Risk Summary Data from two, ongoing birth outcome surveillance studies in Botswana and Eswatini which together include over 14,000 individuals evaluated during pregnancy show similar prevalence of neural tube defects among infants born to individuals taking dolutegravir at the time of conception compared to those born to individuals taking non-dolutegravir-containing regimens at conception or infants born to HIV-negative individuals (see Data) . There are insufficient human data on the use of DOVATO during pregnancy to definitively assess a drug-associated risk for birth defects and miscarriage. However, available human data from the APR with the individual components of DOVATO do not indicate an increased risk of birth defects (see Data) . The background risk for major birth defects for the indicated population is unknown. In the U.S. general population, the estimated background rate for major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. In animal reproduction studies, no evidence of adverse developmental outcomes (including neural tube defects) was observed with dolutegravir at systemic exposures (AUC) less than (rabbits) and 50 times (rats) the exposure in humans at the recommended human dose (RHD) (see Data) . Oral administration of lamivudine to pregnant rabbits during organogenesis resulted in embryolethality at systemic exposure (AUC) similar to the RHD; however, no adverse developmental effects were observed with oral administration of lamivudine to pregnant rats during organogenesis at plasma concentrations (C max ) 35 times the RHD (see Data). Data Human Data: Dolutegravir: Observational studies: The...

Overdosage

10 OVERDOSAGE There is no known specific treatment for overdose with DOVATO. If overdose occurs, the patient should be monitored, and standard supportive treatment applied as required. Dolutegravir As dolutegravir is highly bound to plasma proteins, it is unlikely that it will be significantly removed by dialysis. Lamivudine Because a negligible amount of lamivudine was removed via (4-hour) hemodialysis, continuous ambulatory peritoneal dialysis, and automated peritoneal dialysis, it is not known if continuous hemodialysis would provide clinical benefit in a lamivudine overdose event.

How Supplied

16 HOW SUPPLIED/STORAGE AND HANDLING Each DOVATO tablet contains 50 mg of dolutegravir as dolutegravir sodium and 300 mg lamivudine and is an oval, biconvex, white, film-coated tablet, debossed with “SV 137” on one face. Bottle of 30 tablets with child-resistant closure NDC 49702-246-13. Blister pack of 30 tablets with child-resistant closure NDC 49702-246-33. Store below 30°C (86°F).

About This Information

This drug information is sourced from FDA-approved labeling via the openFDA database. It is intended for educational and reference purposes only. This is not medical advice. Always consult your healthcare provider before making decisions about medication. Drug information may be updated by the FDA; check with your pharmacist for the most current information.

What are side effects?

Side effects are unwanted reactions that can occur when taking a medication. They range from mild (headache, nausea) to severe (allergic reactions, organ damage). Not everyone experiences side effects, and severity varies. Report any concerning side effects to your doctor.

What are drug interactions?

Drug interactions occur when a medication is affected by another drug, food, or supplement. Interactions can make medications less effective or cause dangerous side effects. Always tell your doctor about all medications and supplements you take.