Agent		Equivalent dosages	Dosage	Cost (generic)*
Histamine H2-receptor antagonists
	Cimetidine (Tagamet)	400 mg twice daily	400 to 800 mg twice daily		$109 (88)
	Famotidine (Pepcid)	20 mg twice daily	20 to 40 mg twice daily		121 (77 to 104)
	Nizatidine (Axid)	150 mg twice daily	150 mg twice daily		183 (165)
	Ranitidine (Zantac)	150 mg twice daily	150 mg twice daily		118 (91 to 95)
Proton pump inhibitors
	Esomeprazole (Nexium)	40 mg per day	20 to 40 mg per day		132
	Lansoprazole (Prevacid)	30 mg per day	15 to 30 mg per day		131
	Omeprazole (Prilosec)	20 mg per day	20 mg per day		138 (112)
	Pantoprazole (Protonix)	40 mg per day	40 mg per day		104
	Rabeprazole (Aciphex)	20 mg per day	20 mg per day		128