The following table is a guideline for the upper limit of this dosage:WeightDose - Every 6 HourslbkgTeaspoonfuls1881 (5 mL)35162 (10 mL)53243 (15 mL)70324 (20 mL)88405 (25 mL)106486 (30 mL)141648 (40 mL)1768010 (50 mL)For the lower limit dose (15 mg/kg trimethoprim and 75 mg/kg sulfamethoxazole per 24 hours) administer 75% of the dose in the above table.