Famopsin Tablets 20mg (Famotidine) - Prescription Required|derma.pkLooking for relief from the discomfort of acidity and ulcers? Famopsin Tablets, containing Famotidine, are now available at derma. pk, your trusted online pharmacy in Pakistan. But first, you'll need a prescription from your doctor. What is Famotidine and how does it work? Famotidine belongs to a group of medicines called histamine H2 receptor antagonists. It works by reducing the amount of acid your stomach produces. This helps to relieve symptoms