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.
Horseshoe crabs have a wide range of food resources. As said before, horseshoe crabs are secondary consumers. They mainly consume a wide variety of mollusks. They feed upon many species of bivalves and lots of different clams.Clams include the surf clam, macoma clam, blue mussel, wedge clam, razor clam, fragile razor clam, and soft-shelled clams.They also eat different kinds of worms. Not only do they consume animals, vascular plant material has often been found in sampled horseshoe crabs.lams include the surf clam, macoma clam, blue mussel, wedge clam, razor clam, fragile razor clam, and soft-shelled clams. They also eat different kinds of worms. Not only do they consume animals, vascular plant material has often been found in sampled horseshoe crabs.