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.
As you can see blueberries have a hint of phosphorus, calcium, and fat and they have a little acid in them, however they are quite sweet as they contain a lot of sugar. So rabbits can eat blueberries but only in small amounts once a week at the most. One blueberry should suffice.