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Dolutegravir / Lamivudine Dosage

Medically reviewed by Last updated on Sep 19, 2023.

Applies to the following strengths: 50 mg-300 mg

Usual Adult Dose for HIV Infection

1 tablet orally once a day

Uses: As a complete regimen, for the treatment of HIV-1 infection in patients with no antiretroviral treatment history or to replace a stable antiretroviral regimen in patients who are virologically-suppressed (HIV-1 RNA less than 50 copies/mL) with no history of treatment failure and no known substitutions associated with resistance to the individual components

Renal Dose Adjustments

CrCl less than 30 mL/min: Not recommended.


  • Patients with sustained CrCl between 30 and 49 mL/min should be monitored for hematologic toxicities.
  • If lamivudine dose adjustment is indicated (e.g., patient develops new/worsening neutropenia or anemia), this drug should be discontinued and the individual components should be used.

Liver Dose Adjustments

Mild or moderate liver dysfunction (Child-Pugh A or B): No adjustment recommended.
Severe liver dysfunction (Child-Pugh C): Not recommended.

Dose Adjustments

Coadministration with carbamazepine or rifampin: An additional 50 mg/day of dolutegravir is recommended, separated from this combination product by 12 hours.



  • EMERGENCE OF LAMIVUDINE-RESISTANT HBV: All patients with HIV-1 should be tested for HBV before/when starting this drug. Emergence of lamivudine-resistant HBV variants associated with lamivudine-containing antiretroviral regimens reported. If this drug is used in HBV/HIV-1-coinfected patients, additional treatment should be considered to appropriately treat chronic HBV; otherwise, an alternative regimen should be considered.
  • EXACERBATIONS OF HBV: Severe acute exacerbations of HBV reported in HBV/HIV-1-coinfected patients who have stopped lamivudine, a component of this drug. Hepatic function of HBV/HIV-1-coinfected patients should be monitored closely; if appropriate, anti-HBV therapy should be started.

Prior hypersensitivity reaction to either active component; coadministration with dofetilide

Safety and efficacy have not been established in patients younger than 18 years.

Consult WARNINGS section for additional precautions.


Data not available

Other Comments

Administration advice:

  • Before/when starting this drug, test patients for HBV infection.
  • Pregnancy testing is recommended before starting this drug in patients of childbearing potential.
  • Administer with or without food.
  • Administer products containing polyvalent cations (e.g., aluminum or magnesium) and oral supplements containing calcium or iron (including multivitamins containing calcium or iron) 6 hours before or 2 hours after this drug; may administer supplements/multivitamins containing calcium or iron and this drug at the same time with food
  • Consult the manufacturer product information regarding missed doses.

Storage requirements:
  • Store below 30C (86F).

  • Each combination tablet contains dolutegravir 50 mg and lamivudine 300 mg.

  • General: Pregnancy testing in patients of childbearing potential (before starting therapy)
  • Hematologic: For hematologic toxicities in patients with sustained CrCl between 30 and 49 mL/min (during therapy)
  • Hepatic: For hepatotoxicity (during therapy); hepatic function of HBV/HIV-1-coinfected patients with clinical and laboratory follow-up (for at least several months after stopping this drug)

Patient advice:
  • Read the US FDA-approved patient labeling (Patient Information).
  • Contact health care provider at once if rash develops; stop this drug immediately and seek medical attention if rash associated with any of the following symptoms develop: fever, general ill feeling, extreme tiredness, muscle/joint aches, blisters/peeling of skin, oral blisters/lesions, eye inflammation, facial swelling, swelling of eyes/lips/tongue/mouth, difficulty breathing, and/or signs/symptoms of liver problems (e.g., yellowing of skin/whites of eyes, dark/tea-colored urine, pale-colored stools/bowel movements, nausea, vomiting, loss of appetite, pain/aching/sensitivity on right side below ribs).
  • Monitor for hepatotoxicity during therapy.
  • Patients of childbearing potential (including those actively trying to become pregnant): Discuss the risks and benefits of this drug with health care provider to decide if alternative therapy should be considered at time of conception through the first trimester of pregnancy; contact health care provider if pregnancy is confirmed in the first trimester.
  • Patients of childbearing potential: The consistent use of effective contraception is recommended.
  • Notify health care provider at once of any signs/symptoms of infection.

Frequently asked questions

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.