 <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] 240 milliliters) of plain water. Swallow the tablet whole. Do not chew or suck on it. Then stay fully upright (sitting, standing, or walking) for at least 30 minutes and do not lie down until after your first food of the day. Alendronate works only if taken on an empty stomach. Wait at least 30 minutes (preferably 1 to 2 hours) after taking the medication before you eat or drink anything other than plain water. Do not take this medication at bedtime or before rising for the day. It may not be absorbed and you may have side effects. Calcium or iron supplements, vitamins, antacids, coffee, tea, soda, mineral water, calcium-enriched juices, and food can decrease the absorption of alendronate. Do not take these for at least 30 minutes (preferably 1 to 2 hours) after taking alendronate. Take this medication regularly to get the most benefit from it. Remember to use it at the same time each morning. Talk to your doctor about the risks and benefits of long-term use of this medication.The side effects of Alendronate Oral: Stomach pain, constipation, diarrhea, gas, or nausea may occur. </s>