Pantoprazole: Ketoconazole, ampicillin esters, Fe salts. Domperidone: Anticholinergics, antimuscarinics & opioid analgesics; concomitant orally administered drugs particularly sustained-release or enteric-coated formulations; dopaminergic agonists, other hypoprolactinemic agents, antacids & antisecretory agents; cimetidine, Na bicarbonate.