First, read the English article below.

Certain medications, such as oxycodone, can upset your stomach and cause nausea. If you are taking any medications that unsettle the stomach, speak to your doctor about discontinuing their use until you feel better.  Pain medications such as codeine, hydrocodone, morphine, or oxycodone can cause nausea.  Some over the counter medications such as iron or potassium supplements, and even aspirin, can cause nausea. In many cases, simply resting can help relieve nausea and vomiting. Lie down as often as you can, especially after eating, to help you keep food down. Getting too much activity can make nausea and vomiting worse by unsettling your stomach. If you are unable to keep anything down because of motion sickness, consider taking a medication or antihistamine. These may help alleviate the nausea and vomiting and allow you to eat something.  You can try over the counter antihistamines such as dimenhydrinate to help keep food down. Follow either your doctor’s instructions or the directions on the packaging.  If you’re experiencing severe nausea and vomiting, your doctor can prescribe scopolamine, which comes as an adhesive patch. Scopolamine can only be used by adults.   Alleviate nausea with pressure points. This really works, and requires no medication or any great expertise in Eastern style medicine. If you experience nausea, vomiting, or the inability to keep food or liquids down for a protracted period of time, see your doctor. She will help rule out more serious conditions and can develop a course of treatment to help you keep down foods.  If you have been vomiting for longer than 24 hours, see your doctor as soon as possible.  If you haven’t kept any fluids down for 12 or more hours, seek medical treatment.  If you have blood or dark material in your vomit, go to the emergency room.  If you have severe vomiting—you vomit more than three times per day—see a medical professional. 

Now, please write a short abstract for it in Vietnamese. Abstract:
Lưu ý về các loại thuốc có thể khiến dạ dày bị rối loạn. Nghỉ ngơi đầy đủ. Thử uống thuốc chống say tàu xe và thuốc kháng histamine. Đến bác sĩ.