Lansoprazole Home>Pharmacy>Drugs_and_Medications>L>Lansoprazole     Web Pages Lansoprazole Information from the RxList. Prevacid All about Prevacid. Watch a video featuring the mascot (Tummy). DrugDigest: Lansoprazole ( Prevacid ) Information on dosage, usage, side effects, interactions, and drug comparisons, including generics when available.