Please choose the correct ending to complete the given sentence: Health: [header] How to avoid stomach pain when taking antibiotics [title] Follow your doctor's instructions exactly. [step] When your doctor writes you a prescription for antibiotics, she will give you specific instructions regarding how to take the medication. Following these instructions exactly can help to reduce your chances of developing stomach pain, as your doctor will most likely give you tips on how to avoid this unpleasant side effect.

Ending1: [title] Perform core exercises before or after your surgery. [step] Once you are home from surgery, begin doing core exercises. Ending2: [substeps] Take frequent breaks between trips to the bathroom and when you are taking your medication. Taking something too soon can worsen your symptoms and reduce your risk of further complications. Ending3: [substeps] Your instructions may include a specific time that you should take the antibiotics so that they will have the least effect on your stomach. Unless the label indicates otherwise, store your antibiotics in a dark, dry place. Ending4: [substeps] Make sure your doctor tells you to take any medication before you take it. This is especially important for those who take antibiotics for infections like salmonella.

Answer format: ending1/ending2/ending3/ending4