 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  gastroesophageal reflux disease-GERD, Zollinger-Ellison syndrome). It works by decreasing the amount of acid your stomach makes. It relieves symptoms such as cough that doesn't go away, stomach pain, heartburn, and difficulty swallowing. Famotidine belongs to a class of drugs known as H2 blockers.This form of famotidine is given by vein and is used to treat these conditions for a short time when you cannot take the medication by mouth. Your doctor should switch you to taking this medication by mouth when possible. How to use Famotidine Vial This medication is injected into a vein as directed by your doctor. The dosage and length of treatment are based on your medical condition and response to treatment. In children, dosage may also be based on body weight. If you are giving this medication to yourself at home, learn all preparation and usage instructions from your health care professional. Before injecting each dose, clean the injection site with rubbing alcohol. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely. Tell your doctor if your condition lasts or gets worse.The side effects of Famotidine Intra </s>