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.
Please add a relative entry to your dictionary. The strikingly beautiful blue marlin is the largest of the Atlantic marlins and one of the biggest fish in the world. Females, which are significantly larger than males, can reach 14 feet (4.3 meters) in length and weigh more than 1,985 pounds (900 kilograms). Average sizes tend to be in the range of 11 feet (3.4 meters) and 200 to 400 pounds (91 to 181 kilograms).