 <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]  this medication by mouth as directed by your doctor, usually three times a day. Take it with a full glass of water (8 ounces/240 milliliters). Do not lie down for at least 10 minutes after taking this drug. If you have stomach upset while taking this medication, take it with food, milk, or an antacid. Swallow whole. Do not chew, crush, or split the medication. Splitting the medication may not provide enough famotidine to protect against ulcers. The dosage is based on your medical condition and response to treatment. To reduce your risk of stomach bleeding and other side effects, take this medication at the lowest effective dose for the shortest possible time. Do not increase your dose or take this drug more often than prescribed. It may take up to two weeks of taking this drug regularly until you get the full benefit. Take this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day. Tell your doctor if your condition lasts or gets worse.The side effects of Duexis Oral: See also Warning section. Upset stomach, nausea, vomiting, headache, diarrhea, constipation, dizziness, or drowsiness may occur. If any of these effects last </s>