 <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]  Methylphenidate belongs to a class of drugs known as stimulants. It can help increase your ability to pay attention, stay focused on an activity, and control behavior problems. It may also help you to organize your tasks and improve listening skills. How to use methylphenidate HCl oral Read the Medication Guide provided by your pharmacist before you start taking methylphenidate and each time you get a refill. If you have any questions, ask your doctor or pharmacist. There are different brands and forms of this medication available. They may not have the same effects and may not be interchangeable. Do not change brands or forms without consulting your doctor or pharmacist. Take this medication by mouth as directed by your doctor, usually once daily before or with breakfast. If you have upset stomach, you may take this medication with food. Taking this medication late in the day may cause trouble sleeping (insomnia). Do not break, crush, or chew this medication. Doing so can release all of the drug at once, increasing the risk of side effects. Swallow the capsules whole. If you have trouble swallowing the capsule, you may open the capsule and carefully sprinkle its contents on a spoonful of cool applesauce. Swallow all of the mixture right away without chewing </s>