 <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] osteoporosis) and to increase bone mass. Osteoporosis causes bones to become thinner and break more easily. Your chance of developing osteoporosis increases as you age, after menopause, or if you are taking corticosteroid medications (such as prednisone) for a long time.This product is a combination of two medicines: alendronate and cholecalciferol (vitamin D3). Alendronate works by slowing bone loss to help maintain strong bones and reduce the risk of broken bones (fractures). It belongs to a class of medications called bisphosphonates. Vitamin D3 helps your body absorb calcium and is necessary for building healthy bones. How to use Alendronate-Vitamin D3 Tablet Read the Medication Guide provided by your pharmacist before you start taking this medication and each time you get a refill. Follow the instructions very closely to make sure your body absorbs as much drug as possible and to reduce the risk of injury to your esophagus. If you have any questions, ask your doctor or pharmacist. This medication is usually taken once per week unless otherwise directed by your doctor. Choose the day of the week that best fits your schedule and take </s>