 <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]  off sleep in people who do not have a sleep disorder. How to use dextroamphetamine sulfate oral Read the Medication Guide and, if available, the Patient Information Leaflet provided by your pharmacist before you start taking dextroamphetamine and each time you get a refill. If you have any questions, ask your doctor or pharmacist. Take this medication by mouth with or without food as directed by your doctor, usually 1-3 times a day. The first dose is usually taken when you wake up in the morning. If more doses are prescribed, take them as directed by your doctor, usually 4-6 hours apart. Taking this medication late in the day may cause trouble sleeping (insomnia). The dosage is based on your medical condition and response to treatment. Your doctor may adjust your dose to find the dose that is best for you. Follow your doctor's instructions carefully. Swallow the capsules whole. Do not crush or chew the capsules. Doing so can release all of the drug at once, increasing the risk of side effects. Use this medication regularly to get the most benefit from it. To help you remember, take it at the same time(s) each day. During treatment, your doctor may occasionally recommend stopping the medication for a short time </s>