2.1 Timing of Administration
Entecavir tablets should be administered on an empty stomach (at least 2 hours after a meal and 2 hours before the next meal).
2.2 Recommended Dosage in Adults
Compensated Liver Disease
The recommended dose of entecavir tablets for chronic hepatitis B virus infection in nucleoside-inhibitor-treatment-naïve adults and adolescents 16 years of age and older is 0.5 mg once daily.
The recommended dose of entecavir tablets in adults and adolescents (at least 16 years of age) with a history of hepatitis B viremia while receiving lamivudine or known lamivudine or telbivudine resistance substitutions rtM204I/V with or without rtL180M, rtL80I/V, or rtV173L is 1 mg once daily.
Decompensated Liver Disease
The recommended dose of entecavir tablets for chronic hepatitis B virus infection in adults with decompensated liver disease is 1 mg once daily.
2.3 Recommended Dosage in Pediatric Patients
Pediatric use information is approved for Bristol-Myers Squibb Company’s Baraclude® (entecavir) tablets. However, due to Bristol-Myers Squibb Company’s marketing exclusivity rights, this drug product is not labeled with that information.
2.4 Renal Impairment
In adult subjects with renal impairment, the apparent oral clearance of entecavir decreased as creatinine clearance decreased [see Clinical Pharmacology (12.3)]. Dosage adjustment is recommended for patients with creatinine clearance less than 50 mL/min, including patients on hemodialysis or continuous ambulatory peritoneal dialysis (CAPD), as shown in Table 2. The once-daily dosing regimens are preferred.
Table 2: Recommended Dosage of Entecavir Tablets in Adult Patients With Renal Impairment
*
If administered on a hemodialysis day, administer entecavir tablets after the hemodialysis session.
Creatinine Clearance (mL/min)
Usual Dose (0.5 mg)
Lamivudine-Refractory or Decompensated Liver Disease
(1 mg)
50 or greater
0.5 mg once daily
1 mg once daily
30 to less than 50
0.5 mg every 48 hours
0.5 mg once daily
OR
1 mg every 48 hours
10 to less than 30
0.5 mg every
72 hours
1 mg every 72 hours
Less than 10
Hemodialysis* or CAPD
0.5 mg every 7 days
1 mg every 7 days
Pediatric use information is approved for Bristol-Myers Squibb Company’s Baraclude® (entecavir) tablets. However, due to Bristol-Myers Squibb Company’s marketing exclusivity rights, this drug product is not labeled with that information.
2.5 Hepatic Impairment
No dosage adjustment is necessary for patients with hepatic impairment.
2.6 Duration of Therapy
The optimal duration of treatment with entecavir tablets for patients with chronic hepatitis B virus infection and the relationship between treatment and long-term outcomes such as cirrhosis and hepatocellular carcinoma are unknown.