Zofran 8mg tablets contain ondansetron hydrochloride dihydrate as the active ingredient. This medication comes in a pack of 10 tablets and is manufactured by GlaxoSmithKline (GSK). Each tablet contains 8mg of ondansetron as ondansetron hydrochloride dihydrate. The medication is presented in a pack containing 10 tablets. This is a prescription-only medication that should be taken as directed by your healthcare provider.