 [ Symptoms ] can i transmit genital warts seventeen years after having them removed [ Disease ] famotidine pepcid products is in a drug class called h2 blockers omeprazole prilosec belongs to the proton pump inhibitors these medications work two different ways to decrease acid production and flare ups with stomach issues both medications can be found over the counter famotidine is typically taken 1 to 2 times daily while omeprazole is taken once daily may be dosed differently than recommended in over the counter packaging label by prescriber it is also important to keep in mind that since they are two different medications the side effect profile will be different