Ormetoprim (8.3 mg/kg; i.p.) exhibits absorption half-life (5.4 h), elimination half-life (7.5 h) and C max (1.2±0.2 μg/mL). Ormetoprim (8.3 mg/kg; p.o.) exhibits absorption half-life (3.9 h), elimination half-life (3.9 h), C max (1.6±0.4 μg/mL) and oral availability (78.5%) relative to intraperitoneal administration.