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.
A blue whale will most likely eat about 4 tones of foods a day. Blue whales feeding habits include krill and plankton. In fact, the krill, a type of ocean creature, is the most preferred meal of blue whales. And since these mammals like krill so much, they can eat up to 10 tones of krill a day. Specialists say that the stomach of blue whales can hold more than 1,000 kg of foods.