Ranitidine is a competitive, reversible inhibitor of the action of histamine at the histamine H2-receptors, including receptors on the gastric cells. Ranitidine does not lower serum Ca++ in hypercalcemic states. Ranitidine is not an anticholinergic agent.
1 The Blue Marlins have a diet of: Octopi, squid and pelagic fish such as black fin tuna and frigate mackerel.  They do prefer to hunt alone and during the day, rather than in schools, so it is safe to say they are a rather antisocial species.
Blue grosbeaks gather most of their food by foraging in agricultural fields and pastures. In the fall, blue grosbeaks often gather in large flocks to feed in grain fields. They eat mostly invertebrates including snails, beetles, moths, grasshoppers, spiders and worms. Blue grosbeaks also eat seeds, especially grass and waste grain in abandoned agricultural fields. When feeding insects to their young, the adults remove the head, legs and wings.