 <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]  an antacid which may react with other medications, preventing them from being fully absorbed by your body. Talk with your doctor or pharmacist about how to schedule your medications to prevent this problem. Stop taking this medication and call your doctor promptly if your symptoms continue after you begin taking it, or if they do not improve after you have been taking this medication for 14 days in a row. Do not take this medicine for more than 14 days in a row without talking with your doctor.The side effects of Pepcid Complete Oral: Diarrhea, headache, constipation, or stomach cramps may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. If your doctor has directed you to use this medication, remember that your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: easy bruising/bleeding, signs of infection (such as sore throat that doesn't go away, fever, chills), mental/mood changes (such as restlessness, confusion, depression, hallucinations). Get medical help right away if you have any very serious side effects, including </s>