The study was conducted as an open label, balanced, randomised, two-treatment, two-period, two-sequence, single-dose, crossover bioavailability study comparing Ondansetron 8 mg orally disintegrating tablets of Ohm Laboratories (A subsidiary of Ranbaxy Pharmaceuticals, USA) with Zofran 8 mg ODT® orally disintegrating tablets (containing 8 mg of ondansetron) manufactured by Cardinal health, UK for GlaxoSmithKline USA, in healthy, adult, human, male subjects under fed condition.