Usual Adult Dose: 250 mg to 500 mg every 8 hours or 500 mg every 12 hours, depending on the type and severity of infection.
Maximum Dose: 6 g/day in divided doses. An adult dose of 3 g twice daily is recommended in appropriate cases for the treatment of severe or recurrent purulent respiratory tract infection.
Recommended Adult Dose for Specific Infections: See Table 3.

Usual Pediatric Dose: Neonates and infants ≤3 months: 20 to 30 mg/kg body weight/day in divided doses every 12 hours.
Infants >3 months and Children <40 kg: 25 to 50 mg/kg body weight/day in divided doses every 8 hours or every 12 hours.
Recommended Pediatric Dose for Specific Infections: See Table 4.

Patients with Renal Impairment: See Table 5.

Usual Duration of Treatment: For most infections: 5 to 14 days, depending on the type and severity of infection. Continue treatment for at least 48 to 72 hrs after the patient becomes asymptomatic or after evidence of bacterial eradication has been continued.
For β-hemolytic streptococcal infections: At least 10 days to prevent rheumatic fever or glomerulonephritis.
For Lyme Disease: At least 12 days.
Frequent bacteriologic and clinical appraisal is necessary during treatment of chronic urinary tract infections and maybe required for several months after therapy has been completed.
Or, as prescribed by a physician.
Directions for Reconstitution: See Table 6.
